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Published: 2021-02-11 16:03:06 ET
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vrtx-20201231
VERTEX PHARMACEUTICALS INC / MA00008753202020FYfalseus-gaap:AccountingStandardsUpdate201602Member * For the year ended December 31, 2018, amounts are related to the Company’s capital leases and construction financing lease obligations pursuant to ASC 840, Leases, which was applicable until December 31, 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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-K
    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the Fiscal Year Ended December 31, 2020
or
    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE TRANSITION PERIOD FROM   TO    
Commission file number 000-19319
Vertex Pharmaceuticals Incorporated
(Exact name of registrant as specified in its charter)
Massachusetts
(State or other jurisdiction of incorporation or organization)
50 Northern Avenue, Boston, Massachusetts
(Address of principal executive offices)

04-3039129
(I.R.S. Employer Identification No.)
02210
(Zip Code)
Registrant’s telephone number, including area code (617341-6100
Securities registered pursuant to Section 12(b) of the Exchange Act:
Title of Each ClassTrading SymbolName of Each Exchange on Which Registered
Common Stock, $0.01 Par Value Per ShareVRTXThe Nasdaq Global Select Market
Securities registered pursuant to Section 12(g) of the Exchange Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes ☒ No ☐
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.  Yes ☐ No ☒
Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☒ No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes ☒ No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act (Check one):
Large accelerated filer ☒ Accelerated filer ☐ Non-accelerated filer ☐ Smaller reporting company Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.   
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes   No ☒
The aggregate market value of the registrant’s common stock held by non-affiliates of the registrant based on the closing price on June 30, 2020 (the last business day of the registrant’s most recently completed second fiscal quarter of 2020) was $74.8 billion.
As of January 31, 2021, the registrant had 259,960,062 shares of common stock outstanding.
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the definitive proxy statement for the 2021 Annual Meeting of Shareholders, which we expect to hold on May 19, 2021, are incorporated by reference into Part III of this Annual Report on Form 10-K.



VERTEX PHARMACEUTICALS INCORPORATED
ANNUAL REPORT ON FORM 10-K
TABLE OF CONTENTS
“We,” “us,” “Vertex” and the “Company” as used in this Annual Report on Form 10-K refer to Vertex Pharmaceuticals Incorporated, a Massachusetts corporation, and its subsidiaries.
“Vertex,” “KALYDECO®,” “ORKAMBI®,” “SYMDEKO®,” “SYMKEVI®” and “TRIKAFTA®” are registered trademarks of Vertex. The trademark for “KAFTRIO” is pending in the United States and registered in the European Union. Other brands, names and trademarks contained in this Annual Report on Form 10-K are the property of their respective owners.
We use the brand name for our products when we refer to the product that has been approved and with respect to the indications on the approved label. Otherwise, including in discussions of our cystic fibrosis development programs, we refer to our compounds by their scientific (or generic) name or VX developmental designation.
This Annual Report on Form 10-K contains forward-looking statements. Words such as “anticipates,” “may,” “forecasts,” “expects,” “intends,” “plans,” “potentially,” “believes,” “seeks,” “estimates,” variations of such words and similar expressions are intended to identify such forward-looking statements, although not all forward-looking statements contain these identifying words. Please refer to “Special Note Regarding Forward-Looking Statements” set forth in Part I, Item 1A, for a discussion of our forward-looking statements and the related risks and uncertainties of such statements.



PART I

ITEM 1.BUSINESS
OVERVIEW
We are a global biotechnology company that invests in scientific innovation to create transformative medicines for people with serious diseases with a focus on specialty markets.
Cystic Fibrosis
Our goal is to develop treatment regimens that will provide benefits to all people with cystic fibrosis, or CF, and will enhance the benefits currently provided to people taking our medicines. Our marketed medicines are TRIKAFTA/KAFTRIO (elexacaftor/tezacaftor/ivacaftor and ivacaftor), SYMDEKO/SYMKEVI (tezacaftor/ivacaftor and ivacaftor), ORKAMBI (lumacaftor/ivacaftor) and KALYDECO (ivacaftor). Our triple combination regimen, TRIKAFTA/KAFTRIO, was approved in 2019 in the United States, or U.S., and in 2020 in the European Union, or E.U. Collectively, our four medicines are approved to treat the majority of the approximately 83,000 people with CF in North America, Europe and Australia. We are evaluating our medicines, including our triple combination regimen, in additional patient populations, including younger children, with the goal of having small molecule treatments for up to 90% of people with CF. We are pursuing genetic therapies to address the remaining 10% of people with CF.
Research and Development
Our goal is to identify and develop innovative medicines by combining transformative advances in the understanding of human disease and in the science of therapeutics to advance human health. Our research and early development strategy includes advancing multiple compounds from each program into early clinical trials and evaluating the resulting data to inform drug discovery and development, with the goal of bringing best-in-class therapies to patients. This strategy and approach is intended to increase the likelihood of successfully bringing transformative medicines to patients.
Small Molecule Programs
Alpha-1 Antitrypsin Deficiency. We are focused on identifying and developing multiple drug candidates with the potential to increase the levels of functional alpha-1 antitrypsin, or AAT, in the blood, to address the lung and liver manifestations of AAT deficiency. Enrollment is ongoing in a Phase 2 proof-of-concept trial for VX-864, an investigational small molecule corrector for the treatment of AAT deficiency. We expect data from this clinical trial in the first half of 2021.
APOL1-Mediated Kidney Diseases. We are evaluating inhibitors of APOL1 function to reduce levels of protein in the urine, or proteinuria, in people with serious kidney diseases, including focal segmental glomerulosclerosis, or FSGS, and other APOL1-mediated kidney diseases. In 2020, we initiated a Phase 2 proof-of-concept clinical trial designed to evaluate the reduction in proteinuria in people with APOL1-mediated FSGS after treatment with VX-147. Enrollment in this clinical trial is ongoing and we expect data in 2021.
Pain. We believe that NaV1.8 inhibitors have the potential to provide an effective non-opioid treatment for pain. We are advancing a portfolio of NaV1.8 inhibitors through pre-clinical and early clinical development.
Cell and Genetic Therapies
Sickle cell disease and transfusion-dependent beta thalassemia. We are co-developing CTX001, an investigational CRISPR/Cas9-based gene-editing therapy for sickle cell disease, or SCD, and transfusion-dependent beta thalassemia, or TDT, with CRISPR Therapeutics AG, or CRISPR. Enrollment and dosing are ongoing in two Phase 1/2 clinical trials to evaluate CTX001 as a potential one-time curative therapy for people with severe SCD and TDT. In December 2020, we announced positive interim data from 10 people treated with CTX001 and that a total of thirteen people with TDT and seven people with severe SCD have been dosed with CTX001. We expect to complete enrollment in both clinical trials in 2021.
Type 1 Diabetes. In 2019, we acquired Semma Therapeutics, Inc., or Semma, and established preclinical cell therapy programs for type 1 diabetes, or T1D. We are pursuing two programs for the transplant of functional islets into patients: transplantation of islet cells alone, using immunosuppression to protect the implanted cells, and implantation of the islet cells inside a novel immunoprotective device. The FDA has cleared our Investigational New Drug Application, or IND, for

1


VX-880, the first program (transplantation of islet cells alone), and we expect to initiate a Phase 1/2 clinical trial evaluating VX-880 in the first half of 2021.
Duchenne muscular dystrophy, or DMD, and myotonic dystrophy type 1, or DM1. In 2019, we acquired Exonics Therapeutics, Inc., or Exonics, and expanded our collaboration with CRISPR enabling the establishment of preclinical genetic therapy programs for DMD and DM1.
We plan to continue investing in our research and development programs and fostering scientific innovation by continuing to identify additional drug candidates through our internal research efforts and investing in business development transactions to access emerging technologies, drugs and drug candidates.

CYSTIC FIBROSIS
Background
CF is a life-shortening genetic disease caused by a defective or missing CFTR protein resulting from mutations in the CFTR gene. To develop CF, children must inherit two defective CFTR genes, which are referred to as alleles; one allele is inherited from each parent. The vast majority of patients with CF carry at least one of the two most prevalent mutations, the F508del mutation and the G551D mutation. The F508del mutation results in a defect in the CFTR protein in which the CFTR protein does not reach the surface of the cells in sufficient quantities and does not adequately transport chloride ions. The G551D mutation results in a defect in the CFTR protein in which the defective protein reaches the surface of a cell but does not adequately transport chloride ions across the cell membrane.
The absence of working CFTR proteins results in poor flow of salt and water into and out of cells in a number of organs, including the lungs. As a result, thick, sticky mucus builds up and blocks the passages in many organs, leading to a variety of symptoms. In particular, mucus builds up and clogs the airways in the lungs, causing chronic lung infections and progressive lung damage. CFTR potentiators such as ivacaftor and VX-561 increase the probability that the CFTR protein channels open on the cell surface, increasing the flow of salt and water into and out of the cell. Our CFTR correctors, such as lumacaftor, tezacaftor, and elexacaftor, help CFTR proteins reach the cell surface.

2


Our Medicines
Our medicines, TRIKAFTA/KAFTRIO, SYMDEKO/SYMKEVI, ORKAMBI and KALYDECO, are collectively approved to treat the majority of people with CF in North America, Europe and Australia. Our approved medicines, including information regarding the indication and age groups for which the medicine is approved, are set forth in the table below.
ProductScientific NameRegion/Initial ApprovalIndicationEligible Age Group
vrtx-20201231_g1.jpg
elexacaftor/tezacaftor/ivacaftor and ivacaftorU.S.
(2019)
People with CF with (i) at least one F508del mutation, or (ii) another mutation that is responsive to elexacaftor/tezacaftor/ivacaftor and ivacaftor
12 years of age and older
vrtx-20201231_g2.jpg
elexacaftor/tezacaftor/ivacaftor and ivacaftorE.U. (2020)
People with CF with (i) at least one F508del mutation and one minimal function mutation, or (ii) two F508del mutations
12 years of age and older
vrtx-20201231_g3.jpg
tezacaftor/ivacaftor and ivacaftorU.S.
(2018)
People with CF (i) homozygous for the F508del mutation or (ii) with at least one mutation that is responsive to tezacaftor/ivacaftor

6 years of age and older
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tezacaftor/ivacaftor E.U.
(2018)
People with CF (i) homozygous for the F508del mutation or (ii) with one copy of the F508del mutation and one copy of certain mutations that result in residual CFTR activity
6 years of age and older
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lumacaftor/ivacaftorU.S.
(2015)
People with CF homozygous for the F508del mutation
2 years of age and older
lumacaftor/ivacaftorE.U.
(2015)
People with CF homozygous for the F508del mutation
2 years of age and older
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ivacaftorU.S.
(2012)
People with CF with G551D and other specified mutations
4 months of age and older
ivacaftorE.U.
(2012)
People with CF with G551D and other specified mutations
4 months of age and older
In addition to the E.U. and the U.S., we market our products in additional countries, including the United Kingdom, Australia, Switzerland, Israel, and Canada. Currently, our medicines treat almost half of the people with CF in these geographies. We continuously seek to increase the number of patients eligible and able to receive our current medicines through label expansions, approval of new medicines and expanded reimbursement. Since the beginning of 2020, activities in support of these efforts include:
TRIKAFTA/KAFTRIO
In August, the European Commission granted marketing authorization for KAFTRIO to treat people with CF 12 years of age and older with one F508del mutation and one minimal function mutation, or two F508del mutations.
The FDA expanded the eligibility for TRIKAFTA to include people with CF 12 years of age and older with certain mutations that are responsive to TRIKAFTA based on in vitro data.
In January 2021, the FDA accepted our supplemental New Drug Application, or sNDA, for TRIKAFTA for the treatment of children 6 to 11 years of age with at least one F508del mutation or have certain mutations that are responsive to TRIKAFTA based on in vitro data. The FDA granted Priority Review of the sNDA.

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Swissmedic, the Swiss Agency for Therapeutic Products, granted marketing authorization and a reimbursement agreement was reached for TRIKAFTA in Switzerland for the treatment of people with CF 12 years of age and older who have two copies of the F508del mutation, or one F508del mutation and one minimal function mutation.
Health Canada accepted for Priority Review a New Drug Submission for TRIKAFTA for the treatment of people with CF 12 years of age and older.
SYMDEKO/SYMKEVI
The European Commission approved SYMKEVI for the treatment of people with CF 6 years of age and older with two copies of the F508del mutation, or one F508del mutation and certain residual function mutations.
The FDA approved SYMDEKO for additional responsive mutations in people with CF 6 years of age and older.
ORKAMBI
We entered into a reimbursement agreement with the Swiss government for ORKAMBI for the treatment of people with CF 2 years of age and older, and for SYMDEKO for the treatment of people 12 years of age and older in Switzerland.
KALYDECO
The FDA approved KALYDECO for treatment of infants with CF four months of age and older who have at least one mutation in their CFTR gene that is responsive to KALYDECO.
The European Commission approved KALYDECO for treatment of infants with CF four months of age and older who have the R117H mutation or certain gating mutations.
The FDA approved KALYDECO for treatment of infants with CF four months of age and older with additional responsive mutations.
CF PIPELINE
VX-561, a CFTR potentiator we acquired from Concert Pharmaceuticals, Inc., and VX-121, a CFTR corrector, are being evaluated in Phase 2 clinical development.
We continue to identify and develop additional CFTR modulators with the goal of achieving carrier levels of CFTR activity for the 90% of people with CF who respond to CFTR modulators.
We continue to research genetic therapies, such as messenger ribonucleic acid, or mRNA, and gene-editing approaches, to treat the remaining 10% of people who do not make CFTR protein and, as a result, are not eligible for CFTR modulators.
We extended our collaboration with Moderna, Inc., or Moderna, aimed at the discovery and development of mRNA therapeutics for the treatment of CF. In addition, we entered into a new collaboration with Moderna for the discovery and development of lipid nanoparticles and mRNAs that can deliver gene-editing therapies to lung cells for the treatment of CF.

RESEARCH AND DEVELOPMENT PROGRAMS
We invest in research and development in order to discover and develop transformative medicines for people with serious diseases with a focus on specialty markets. Our strategy is to combine transformative advances in the understanding of human disease and the science of therapeutics in order to discover and develop new medicines. Our approach to drug discovery has been validated through our success in moving novel small molecule drug candidates into clinical trials and obtaining marketing approvals for TRIKAFTA/KAFTRIO, KALYDECO, ORKAMBI and SYMDEKO/SYMKEVI for the treatment of CF and INCIVEK (telaprevir) for the treatment of hepatitis C infection. In addition, we have achieved clinical proof of concept for Nav1.8 inhibition in the treatment of three different pain models, and for gene-editing of BCL11A for the treatment of beta thalassemia and SCD.

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We continue to research and develop small molecule drug candidates for the treatment of serious diseases, including CF, AAT deficiency, APOL1-mediated kidney diseases, and pain. Our research and development approach includes advancing multiple small molecules into clinical trials, pursuing multiple modalities and evaluating clinical and non-clinical data to inform drug discovery and development, with the goal of bringing best-in-class therapies to patients.
Over the last several years, we have expanded our capabilities to include additional innovative therapeutic approaches with a focus on cell and genetic therapies, which have the potential to treat, and in some cases, cure diseases by addressing the underlying cause of the disease. We have expanded our capabilities by increasing our internal investment in cell and genetic therapies, including plans to establish a new research and development site in Boston that will focus primarily on cell and genetic therapies. In addition, we have made several significant investments in external innovation, including:
our collaboration with CRISPR to access and develop therapeutics based on the CRISPR gene-editing technology;
our establishment of cell therapy programs for T1D through our acquisition of Semma;
our establishment of genetic therapy programs for DMD and DM1, through our acquisition of Exonics;
our collaboration with Moderna for the discovery and development of lipid nanoparticles and mRNAs that can deliver gene-editing therapies; and
our collaboration with Affinia Therapeutics, Inc., or Affinia, to engineer novel adeno-associated virus (AAV) capsids to deliver gene therapies.
The experience we gained developing medicines for CF and our analysis of research and development programs conducted by other companies in our industry have shaped a disciplined strategy that guides our investments in research and development and external innovation that focuses on:
•    transformative treatments for life-threatening diseases with a high unmet medical need;
•    targets validated as playing a causal role in the human biology of a disease;
innovative therapeutic approaches to addressing those targets;
biological assays and clinical biomarkers that we believe will be predictive of clinical responses; and
•    efficient clinical and regulatory paths to bring new medicines to patients.
To augment our internal programs, we plan to continue acquiring businesses and technologies and collaborating with biopharmaceutical and technology companies, leading academic research institutions, government laboratories, foundations and other organizations to advance research in our areas of therapeutic interest as well as to access technologies needed to execute on our strategy. We have established such relationships with organizations around the world and intend to extend and leverage that experience to further our research efforts to discover transformational medicines for serious diseases. We will continue to identify and evaluate potential acquisitions and collaborations that may be similar to or different from the transactions that we have engaged in previously.
Small Molecule Programs
Alpha-1 Antitrypsin Deficiency
AAT deficiency is caused by mutations in the SERPINA1 gene that encodes the AAT protein. People who inherit two mutant SERPINA1 alleles (one from each parent) develop AAT deficiency. Most people who develop AAT deficiency have two copies of the mutant Z allele. The mutations result in a defect in the AAT protein in which the protein does not fold correctly. This folding defect causes the AAT protein to accumulate in the liver (where it is produced at high levels), which can cause liver damage. As a result, the protein fails to reach other organs in adequate quantity and function, particularly in the lungs, where its normal role is to protect them from the digestive effects of certain proteases. The unchecked activity of these proteases can cause auto-digestion of lung tissue and may lead to emphysema or chronic pulmonary obstructive disease, and lung infections over time. Currently, there is no cure or treatment that targets the underlying cause of the disease in both the liver and the lung. Available treatments are aimed at transiently increasing levels of AAT in the blood but have no effect

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in the liver. Patients living with AAT deficiency typically experience recurring hospital visits and a shortened life expectancy.
We seek to develop medicines that treat the underlying cause of AAT deficiency. In the laboratory, we have discovered multiple small molecule correctors that restore folding of the mutant AAT protein, with the potential to affect both the liver and lung diseases caused by AAT deficiency, and we are focused on identifying and developing multiple drug candidates with the potential to correct the misfolded protein. In 2020, we advanced two Phase 2 proof-of-concept clinical trials evaluating two investigational oral small molecule correctors, VX-814 and VX-864, for the treatment of people with AAT deficiency who have two copies of the Z mutation. In October 2020, we discontinued development of VX-814 based on the safety and pharmacokinetic profile observed in the clinical trial. Enrollment is ongoing in the clinical trial evaluating VX-864, and we expect data from this clinical trial in the first half of 2021. In addition, we continue to discover and develop additional molecules with the potential to correct AAT deficiency.
APOL1-Mediated Kidney Diseases
Inherited mutations in the APOL1 gene play a causal role in the biology of FSGS as well as other kidney diseases. FSGS is a rare disease that attacks the kidney’s filtering units, causing leakage of protein into the urine followed by deterioration in kidney function, scarring, and, ultimately, permanent kidney damage. FSGS is a leading cause of nephrotic syndrome in children and kidney failure in adults. We are evaluating multiple novel small molecules that inhibit the function of APOL1 protein with the potential to treat APOL1-mediated FSGS. In 2020, we initiated a Phase 2 proof-of-concept clinical trial for VX-147, our first investigational oral small molecule medicine for the treatment of FSGS and other serious kidney diseases. Enrollment is ongoing in this Phase 2 clinical trial and we expect data from the trial in 2021.
Pain
Pain can develop from a variety of pathophysiological and psychological conditions. Patients with pain can suffer from acute pain (for example, following surgery or an injury), neuropathic pain (when there is damage to a nerve), and musculoskeletal pain. Current treatments may not work well and can cause significant side effects. In addition, there is the potential for addiction and the practice of over- and mis-utilization, as well as underutilization of current pain medicines.
Vertex has discovered multiple inhibitors of the voltage-gated sodium channel 1.8, or NaV1.8, as potential treatments for pain. Consistent with our research strategy, the Nav1.8 channel is a validated target for pain based both on inherited mutations that cause pain syndromes as well as our own clinical trial data. Specifically, we have obtained positive results from three separate Phase 2 clinical trials evaluating VX-150, a NaV1.8 inhibitor, in patients with three different pain conditions: acute post-surgical, chronic neuropathic and chronic musculoskeletal pain. We continue to focus our research and development efforts on discovering, developing and advancing a portfolio of multiple inhibitors of NaV1.8 as potential treatments for pain.
Cell and Genetic Therapies
Sickle Cell Disease and Beta Thalassemia
SCD and beta thalassemia are hemoglobinopathies, a group of inherited blood disorders that result from gene mutations that alter hemoglobin, a protein in red blood cells that delivers oxygen throughout the body.
SCD is caused by the change of a single amino acid in the hemoglobin gene that causes red cells to change shape in settings of low oxygen. These sickled cells block blood flow and can lead to severe pain, organ damage and shortened life span. Treatment is typically focused on relieving pain and minimizing organ damage, requiring medication and, for some patients, monthly blood transfusions and frequent hospital visits. We believe there are approximately 25,000 patients with severe SCD in the U.S. and E.U.
Beta thalassemia is caused by loss-of-function mutations in hemoglobin that lead to severe anemia in patients, which causes fatigue and shortness of breath. In infants, beta thalassemia causes failure to thrive, jaundice and feeding problems. Complications of beta thalassemia can lead to an enlarged spleen, liver and/or heart, misshapen bones and delayed puberty. Treatment for beta thalassemia varies depending on the disease severity for each patient. Patients with TDT, the most severe form of the disease, require regular blood transfusions, as frequently as every two to four weeks. Repeated blood transfusions eventually cause an unhealthy buildup of iron in the patient, leading to organ damage. We believe that there are approximately 7,000 patients with TDT in the U.S. and E.U.

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In collaboration with CRISPR, we are co-developing CTX001, an investigational CRISPR/Cas9-based gene-editing therapy, for the treatment SCD and TDT. Our therapeutic approach involves isolating hematopoietic stem and progenitor cells, or HSPCs, which give rise to red blood cells, from a patient, treating those cells ex vivo with CRISPR/Cas9 in order to modify the erythroid-specific enhancer in the BCL11A gene, and reintroducing the edited cells back into the patient. This approach has the potential to increase levels of fetal hemoglobin in erythrocytes and reduce or eliminate symptoms associated with disease.
We and CRISPR are investigating CTX001 in two Phase 1/2 open-label clinical trials designed to assess the safety and efficacy of a single dose of CTX001 in patients ages 12 to 35 with TDT (CLIMB THAL-111) and severe SCD (CLIMB SCD-121), respectively. Patients enrolled in the clinical trial first undergo a treatment which mobilizes a population of HSPCs from the bone marrow into the bloodstream. Blood cells are collected from the patient’s bloodstream and sent to a manufacturing facility where the HSPCs are purified and CRISPR/Cas9 gene-editing is performed. Following manufacturing, the edited cells, now called CTX001, are sent back to the clinical site. Patients are preconditioned with a treatment that ablates their bone marrow prior to infusion of CTX001.
In December 2020, we announced positive interim data from 10 people treated with CTX001 and that 20 people with severe hemoglobinopathies have been dosed with CTX001 in the ongoing Phase 1/2 clinical trials. All seven people with TDT were transfusion independent at last follow-up and all three people with SCD were free of vaso-occlusive crises from CTX001 infusion through the last follow-up. Enrollment and dosing are ongoing, and completion of enrollment for both clinical trials is expected in 2021.
Type 1 Diabetes
T1D is a chronic, metabolic disorder caused by an absence of insulin secretion by the beta cells in the pancreas. In patients with T1D, the person’s own immune system attacks the insulin-producing islet cells of the pancreas, resulting in a complete lack of insulin. While insulin therapy allows patients to live for decades with the disease, challenges of insulin therapy include inadequate control of blood sugar (both hyper- and hypo-glycemia), burden of care on patients and families, and long-term vascular complications.
In 2019, we acquired Semma and established programs to develop cell-based therapies designed to replace insulin-producing islet cells in people with T1D. We are pursuing two programs for the transplant of functional islets into patients: transplantation of islet cells alone, using immunosuppression to protect the implanted cells, and implantation of the islet cells inside an immunoprotective device. The FDA has cleared our IND for VX-880, the first program (transplantation of islet cells alone), and we expect to initiate a Phase 1/2 clinical trial evaluating VX-880 in the first half of 2021. This clinical trial will involve an infusion of fully differentiated, functional islet cells, and chronic administration of concomitant immunosuppressive therapy, to protect the islet cells from immune rejection.
Duchenne Muscular Dystrophy
DMD and DM1 are inherited diseases that result in the weakening and breakdown of skeletal muscles over time. In 2019, we acquired Exonics and expanded our collaboration with CRISPR establishing preclinical programs to develop gene-editing therapies for DMD and DM1. We are focused on advancing gene-editing therapies aimed at treating the underlying cause of DMD by restoring expression of near-full length dystrophin protein, and in DM1 by addressing the repeat expansion that causes the disease. Our collaboration with Affinia enables access to a novel library of AAV capsids to support our ongoing research and development efforts in genetic therapies, including DMD and DM1.

COMMERCIALIZATION OF OUR MEDICINES
Commercial Organization
Our commercial organization focuses on supporting sales of TRIKAFTA/KAFTRIO, SYMDEKO/SYMKEVI, ORKAMBI and KALYDECO in the markets where these products have been approved. Our sales and marketing organizations are responsible for promoting products to health care providers and obtaining reimbursement for our products from third-party payors, including governmental organizations in the U.S. and ex-U.S. markets.
Our U.S. field-based CF commercial team is comprised of a small number of individuals to support commercialization of our medicines for CF. We focus our CF marketing efforts in the U.S. on a relatively small number of physicians and health

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care professionals who write most of the prescriptions for CF medicines. Many of these physicians and health care professionals are located at a limited number of accredited centers in the U.S. focused on the treatment of CF. In international markets, we have small sales forces that support KALYDECO, ORKAMBI, SYMDEKO/SYMKEVI and TRIKAFTA/KAFTRIO in jurisdictions where these products are approved.
We market our products through personal interactions with physicians and allied health care professionals. In addition, our government affairs and public policy group advocates for policies that promote life sciences innovation and increase awareness of the diseases on which we are focusing with state and federal legislatures, government agencies, public health officials and other policymakers. We also have established programs in the U.S. that provide our products to qualified uninsured or underinsured patients at no charge or at a reduced charge, based on specific eligibility criteria.
Reimbursement
Sales of our products depend, to a large degree, on the extent to which our products will be reimbursed by third-party payors, such as government health programs, commercial insurance and managed health care organizations. Increasingly, these third-party payors are becoming stricter in the ways they evaluate medical products and services. Additionally, the containment of health care costs has become a priority of federal and state governments, and the prices of drugs have been a focus in this effort. The U.S. government, state legislatures and foreign governments have shown significant interest in implementing cost-containment programs, including price controls, restrictions on reimbursement and requirements for substitution of generic products. Adoption of price controls and cost-containment measures, and adoption of more restrictive policies in jurisdictions with existing controls and measures, could limit our revenues. Decisions by third-party payors to not cover a product could reduce physician usage of the product.
The Medicare Prescription Drug, Improvement, and Modernization Act of 2003, or the MMA, established the Medicare Part D program to provide a voluntary prescription drug benefit to Medicare beneficiaries. Under Part D, Medicare beneficiaries may enroll in prescription drug plans offered by private entities, which provide coverage of outpatient prescription drugs. Unlike Medicare Part A and B, Part D coverage is not standardized. Part D prescription drug plan sponsors are not required to pay for all covered Part D drugs, and each drug plan can develop its own drug formulary that identifies which drugs it will cover and at what tier or level. However, Part D prescription drug formularies must include drugs within each therapeutic category and class of covered Part D drugs, though not necessarily all the drugs in each category or class. Any formulary used by a Part D prescription drug plan must be developed and reviewed by a pharmacy and therapeutics committee. Government payment for some of the costs of prescription drugs may increase demand for products for which we receive marketing approval. However, any negotiated prices for our products covered by a Part D prescription drug plan likely will be lower than the prices we might otherwise obtain. Moreover, while the MMA applies only to drug benefits for Medicare beneficiaries, private payors often follow Medicare coverage policy and payment limitations in setting their own payment rates. Any reduction in payment that results from the MMA may result in a similar reduction in payments from non-governmental payors.
The American Recovery and Reinvestment Act of 2009 provided funding for the federal government to compare the effectiveness of different treatments for the same illness. A plan for the research was to be developed by the Department of Health and Human Services, or HHS, the Agency for Healthcare Research and Quality and the National Institutes of Health, and periodic reports on the status of the research and related expenditures were to be made to the U.S. Congress. Although the results of the comparative effectiveness studies are not intended to mandate coverage policies for public or private payors, it is not clear what effect, if any, the research will have on the sales of our products. In the future, it is possible that comparative effectiveness research demonstrating benefits of a competitor’s product could adversely affect the sales of our products. If third-party payors do not consider our products to be cost-effective compared to other available therapies, they may not cover our products as a benefit under their plans or, if they do, the level of payment may not be sufficient to allow us to sell our products on a profitable basis.
The Patient Protection and Affordable Care Act, or ACA, was enacted in March 2010 and was designed to expand coverage for the uninsured while at the same time containing overall health care costs. With regard to pharmaceutical products, among other things, the ACA was designed to expand and increase industry rebates for drugs covered under Medicaid programs, impose an annual fee on branded pharmaceutical manufacturers and make changes to the coverage requirements under the Medicare Part D program.
In Europe and other foreign jurisdictions, the success of our products depends largely on obtaining and maintaining government reimbursement because many patients are unable to access prescription pharmaceutical products that are not

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reimbursed by their governments. Negotiating reimbursement agreements in foreign countries can delay the commercialization of a pharmaceutical product and can result in a reimbursement price that is lower than the net price that companies can obtain for the product in the U.S.
In some countries, such as Germany, commercial sales of a new product may begin while the reimbursement rate that a company will receive is under discussion. In other countries, a company must complete reimbursement negotiations prior to the commencement of commercial supply of the pharmaceutical product. The requirements governing drug pricing vary widely from country to country. For example, the member states of the E.U. can restrict the range of drugs for which their national health insurance systems provide reimbursement and can control the prices of prescription drugs. In addition, many ex-U.S. government payers require companies to provide health economic assessments of products, which are evaluated by government agencies set up for this purpose. A member state may approve a specific price for the drug or it may instead adopt a system of direct or indirect controls on the total amount of money that a company may receive for supply of a drug. Countries also may consider increasing mandatory discounts in an attempt to manage increased demands on healthcare budgets. Reimbursement for our products cannot be assured. In addition, it is possible that a country may only provide for reimbursement on terms that we do not deem adequate. Additionally, reimbursement discussions in ex-U.S. markets may take a significant period of time.

STRATEGIC TRANSACTIONS AND COLLABORATIONS
As part of our business strategy, we seek to license or acquire drugs, drug candidates, businesses and other technologies that have the potential to complement our ongoing research and development efforts. In addition, we establish business relationships with collaborators to support our research activities and to lead or support development and/or commercialization of certain drug candidates. We expect to continue to identify and evaluate potential acquisitions, licenses and collaborations that may be similar or different from the transactions that we have engaged in previously.
Strategic Transactions
Acquisitions
In 2019, we acquired Semma, a privately-held company focused on the use of stem cell-derived human islets as a potentially curative treatment for T1D. Our acquisition of Semma advanced our cell therapy capabilities and supports the development of transformative therapies for T1D. In connection with the acquisition, we acquired all of the outstanding equity of Semma for approximately $950.0 million in cash.
In 2019, we acquired Exonics, a privately held company focused on creating transformative gene-editing therapies to repair mutations that cause DMD and other severe neuromuscular diseases, including DM1. Our acquisition of Exonics enhanced our gene-editing capabilities and supports the potential development of novel therapies for DMD and DM1. In connection with the acquisition, we acquired all of the outstanding equity of Exonics for an upfront payment of approximately $245.0 million plus customary working capital adjustments in cash, and certain potential future payments based primarily upon the successful achievement of specified development and regulatory milestones for the DMD and DM1 programs.
Collaboration and Licensing Arrangements
Joint Development and Commercialization Agreement with CRISPR
In December 2017, we entered into a joint development and commercialization agreement, or JDA, with CRISPR pursuant to which we are co-developing and preparing to co-commercialize CTX001 for TDT and SCD. This JDA was entered into following our exercise of an option to co-develop and co-commercialize the hemoglobinopathies program that was contained in the collaboration agreement that we entered into with CRISPR in 2015. The net profits and net losses, as applicable, incurred under the JDA will be shared equally by the parties. Under the JDA, CRISPR will be responsible for commercialization activities in the U.S. and we will be responsible for commercialization activities outside of the U.S. There is a joint committee to provide high-level oversight and decision-making regarding the activities covered by the JDA. The committee contains an equal number of representatives from us and CRISPR.
Either party can terminate the JDA upon the other party’s material breach, subject to specified notice and cure provisions, or, in our case, in the event that CRISPR becomes subject to specified bankruptcy, winding up or similar

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circumstances. Either party may terminate the JDA in the event the other party commences or participates in any action or proceeding challenging the validity or enforceability of any patent that is licensed to such challenging party pursuant to the JDA. We also have the right to terminate the JDA for convenience at any time after giving prior written notice. If circumstances arise pursuant to which a party would have the right to terminate the JDA on account of an uncured material breach, such party may elect to keep the JDA in effect and cause such breaching party to be treated as if it had exercised its opt-out rights with respect to the products associated with such uncured material breach and the royalties payable to the breaching party would be reduced by a specified percentage.
Either party may opt of out of the development of a product candidate under the JDA after predetermined points in the development of the product candidate, on a candidate-by-candidate basis. In the event of such opt-out, the party opting-out will no longer share in the net profits and net losses associated with such product candidate and, instead, the opting out party will be entitled to high single to mid- teen percentage royalties on the net sales of such product, if commercialized.
In-License Agreements
We have entered into various agreements pursuant to which we have obtained access to technologies from third parties and are conducting research and development activities with collaborators. Pursuant to these arrangements, we have obtained development and commercialization rights to resulting drug candidates. Depending on the terms of the arrangements, we may be responsible for the costs of research activities, required to make upfront payments and/or milestone payments upon the achievement of certain research and development objectives, and/or pay royalties on future sales, if any, of commercial products resulting from the collaboration. Our current in-license agreements include:
Affinia Therapeutics, Inc. In 2020, we entered into a collaboration with Affinia to gain access to a novel library of AAV capsids to support on our ongoing research and development efforts in genetic therapies, including DMD, DM1 and CF.
Arbor Biotechnologies, Inc. In 2018, we entered into a collaboration with Arbor Biotechnologies, pursuant to which we are focusing on the discovery of novel proteins, including DNA endonucleases, to advance the development of new gene-editing therapies.
CRISPR Therapeutics AG. In 2015, we entered into a collaboration with CRISPR for the discovery and development of potential new treatments aimed at the underlying genetic causes of human diseases using CRISPR-Cas9 gene-editing technology. As described above, we currently are co-developing CTX001 for the treatment of SCD and beta thalassemia and, if successful, have agreed to co-commercialize CTX001. In addition, we have exercised options to exclusively license treatments for specific targets, including CF, that were subject to the research program. In 2019, we obtained exclusive worldwide rights to CRISPR’s intellectual property for DMD and DM1 gene-editing products through a new agreement with CRISPR.
Kymera Therapeutics, Inc. In 2019, we entered into a collaboration with Kymera Therapeutics for the research and development of small molecule protein degraders. Under the collaboration, Kymera Therapeutics conducts research activities in multiple targets, and upon designation of a clinical development candidate for a target, we have the option to exclusively license molecules against the target.
Moderna, Inc. In 2016, we entered into a collaboration with Moderna, pursuant to which we are seeking to identify and develop mRNA therapeutics for the treatment of CF. In 2020, we entered into a new strategic collaboration with Moderna aimed at the discovery and development of lipid nanoparticles and mRNAs that can deliver gene-editing therapies to lung cells for the treatment of CF.
Skyhawk Therapeutics, Inc. In December 2020, we entered into a collaboration with Skyhawk Therapeutics, for the discovery and development of novel small molecules that modulate RNA splicing for the treatment of serious diseases.
Other Arrangements. In 2019, we entered into collaborations with Molecular Templates, Inc. and Ribometrix, Inc. In 2018, we entered into agreements with Genomics plc, Merck KGaA, Darmstadt, Germany, and X-Chem, Inc. in order to support our research and development efforts.

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Out-license Agreements
We have entered into various agreements pursuant to which we have out-licensed rights to certain drug candidates to third-party collaborators. Pursuant to these out-license arrangements, our collaborators are responsible for all costs related to the continued development of such drug candidates and obtain development and commercialization rights to these drug candidates. Depending on the terms of the arrangements, our collaborators may be required to make upfront payments, milestone payments upon the achievement of certain research and development objectives and/or pay royalties on future sales, if any, of commercial products licensed under the agreement. Our current out-license agreements include a Strategic Collaboration and License Agreement with Merck KGaA, Darmstadt, Germany, that we entered into in 2017, pursuant to which we granted an exclusive worldwide license to research, develop and commercialize four oncology research and development programs.
Cystic Fibrosis Foundation Therapeutics Incorporated
In 2004, we entered into a collaboration agreement with the Cystic Fibrosis Foundation, or CFF, as successor in interest to the Cystic Fibrosis Foundation Therapeutics, Inc., to support research and development activities. Pursuant to the collaboration agreement, as amended, we have agreed to pay tiered royalties ranging from single digits to sub-teens on covered compounds first synthesized and/or tested during a research term on or before February 28, 2014, including KALYDECO (ivacaftor), ORKAMBI (lumacaftor in combination with ivacaftor) and SYMDEKO/SYMKEVI (tezacaftor in combination with ivacaftor) and royalties ranging from low-single digits to mid-single digits on potential net sales of certain compounds first synthesized and/or tested between March 1, 2014 and August 31, 2016, including elexacaftor. For combination products, such as ORKAMBI, SYMDEKO/SYMKEVI and TRIKAFTA/KAFTRIO (elexacaftor, tezacaftor, and ivacaftor), sales are allocated equally to each of the active pharmaceutical ingredients in the combination product.

INTELLECTUAL PROPERTY
Patents and other proprietary rights such as trademarks, trade secrets, and copyrights are critical to our business. We actively seek protection for our products and proprietary information by means of U.S. and foreign patents, trademarks and copyrights, as appropriate. In addition, we rely upon trade secret protection and contractual arrangements to protect certain of our proprietary information and products.
Patents provide a period of exclusivity that can make it more difficult for competitors to market and use our technology. We own patents and pending patent applications that relate to compounds, formulations, treatment of diseases, synthetic routes, intermediates and other inventions.
To protect our intellectual property, we typically apply for patents several years before a product receives marketing approval. Under current law, a patent expires 20 years from its first effective filing date. Since the drug development process may last for many years, there may be a period of time in which we have an issued patent but not marketing approval to sell the drug. To compensate for patent term lost while a product is in clinical trials and undergoing review for marketing approval, we may be able to apply for patent term extensions or supplementary protection certificates in some countries. In addition to patent protection, we have regulatory exclusivity from U.S. and European regulatory agencies for the active pharmaceutical agents and, where applicable, their approved orphan indications for a certain time period. Regulatory exclusivity runs concurrently with patent exclusivity and provides complementary protection.
We own or hold exclusive licenses to several hundred patents in the U.S. Upon approval of an NDA or a supplement thereto, NDA sponsors are required to list with the FDA each patent with claims that cover the applicant’s product or a method of using the product. Each of the patents listed by the NDA sponsor is published in the FDA’s Orange Book. We have ten issued U.S. patents listed in the Orange Book that cover the active pharmaceutical ingredients in KALYDECO, its marketed formulations, and/or its approved indication. We have 19 issued U.S. patents listed in the Orange Book that cover the active pharmaceutical ingredients in ORKAMBI, its marketed formulations, and/or its approved indication. We have 21 issued U.S. patents listed in the Orange Book that cover the active pharmaceutical ingredients in SYMDEKO, its marketed formulation, and/or its approved indication. We have 21 issued U.S. patents listed in the Orange Book that cover the active pharmaceutical ingredients in TRIKAFTA, its marketed formulation, and/or its approved indication.
The table below sets forth the year of projected expiration for the basic product patents covering each of our approved products. For products that are combinations of two or more active ingredients, the table lists the projected expiration of the

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latest expiring patent covering any of the active pharmaceutical ingredients (lumacaftor for ORKAMBI, tezacaftor for SYMDEKO/SYMKEVI and elexacaftor for TRIKAFTA/KAFTRIO). Patent term extensions, supplementary protection certificates, and pediatric exclusivity periods are not reflected in the expiration dates listed in the table below and may extend protection. In some instances, we also own later-expiring patents and applications relating to solid forms, formulations, methods of manufacture, or the use of these drugs in the treatment of particular diseases or conditions. In some cases, however, such patents may not protect our drug from generic competition after the expiration of the basic patent.
ProductProjected Expiration of U.S. PatentProjected Status of European Patent
KALYDECO2027
 2025 1
ORKAMBI2030
2026 2
SYMDEKO/SYMKEVI2027
2028 3
TRIKAFTA/KAFTRIO20372037
1 Certain European countries have granted supplementary protection certificates for KALYDECO, which expire in 2027.
2 Certain European countries have granted supplementary protection certificates for ORKAMBI, which expire in 2030.
3 Certain European countries have granted supplementary protection certificates for SYMKEVI, which expire in 2033.
In addition to protecting our marketed products, we actively monitor and file patent applications in the U.S. and in foreign countries on inventions relating to our pipeline. For example, we also own U.S. and foreign patents and/or we have patent applications relating to the following:
CTX001 and other potential gene-editing approaches for treating hemoglobinopathies.
VX-864 and other compounds being studied for the potential treatment of AAT deficiency.
VX-147 and other compounds being studied for the potential treatment of APOL1-mediated kidney diseases.
CF potentiators and correctors and many other related compounds, and the use of those compounds to treat CF.
Other pre-clinical and clinical candidates and the use of such candidates to treat specified diseases.
The manufacture, pharmaceutical compositions, related solid forms, formulations, dosing regimens and methods of use of many of the above compounds.
We and CRISPR intend to rely upon a combination of rights, including patent rights, trade secret protection, and regulatory exclusivities to protect CTX001. CRISPR has licensed certain rights to a worldwide patent portfolio that covers various aspects of the CRISPR/Cas9 editing platform technology including, for example, compositions of matter and methods of use, including their use in targeting or cutting DNA from Dr. Charpentier. In addition to Dr. Charpentier, this patent portfolio has named inventors who assigned their rights to the Regents of the University of California or the University of Vienna, to whom we refer, together with Dr. Charpentier, as the CVC Group. CRISPR has non-exclusive or co-exclusive rights to the patent rights that protect the core CRISPR/Cas9 gene-editing technology. For example, certain third parties, including competitors, have reported obtaining a license to rights in this patent portfolio in certain fields. In addition, patents and patent applications in this patent portfolio are the subject of proceedings in the U.S., Europe, and other jurisdictions, including proceedings between the CVC and the Broad Institute in the U.S. Patent and Trademark Office, or USPTO. To date, both the CVC and the Broad have obtained granted patents that purport to cover aspects of CRISPR/Cas9 editing platform technology. The patents and patent applications within the CVC patent portfolio and the Broad patent portfolio are, or may in the future be, involved in proceedings similar to interferences or priority disputes in Europe or other foreign jurisdictions. In addition to the patent portfolio licensed from Dr. Charpentier, we own patent applications relating to the composition, manufacture, and use of CTX001.
From time to time we enter into exclusive and non-exclusive license agreements for proprietary third-party technology used in connection with our research activities. These license agreements typically provide for the payment by us of a license fee but may also include terms providing for milestone payments or royalties for the development and/or commercialization of our drug products arising from the related research.
We cannot be certain that issued patents we own or license will be enforceable or provide adequate protection or that pending patent applications will result in issued patents. The existence of patents does not guarantee our right to practice the patented technology or commercialize the patented product. Litigation, interferences, oppositions, inter partes reviews,

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administrative challenges or other similar types of proceedings may be necessary in some instances to determine the validity and scope of certain patents, regulatory exclusivities or other proprietary rights, and in other instances to determine the validity, scope or non-infringement of intellectual property rights that may be claimed by third parties to be pertinent to the manufacture, use or sale of our products.

MANUFACTURING
As we market and sell our approved products and advance our drug candidates through clinical development toward commercialization, we continue to build and maintain our supply chain and quality assurance resources. We rely on internal capabilities and a global network of third parties to manufacture and distribute our products for commercial sale and post-approval clinical trials and to manufacture and distribute our drug candidates for clinical trials. In addition to establishing supply chains for each new approved product, we need to adapt our supply chain for existing products to include additional formulations that are often required in order to treat younger patients or to increase scale of production for existing products. We are focused on ensuring the stability of the supply chains for our current products, including TRIKAFTA/KAFTRIO, and for our pipeline programs. In addition, we are focused on identifying and ensuring the optimal manufacturing and delivery requirements for the cell and genetic therapies we are developing.
We expect that we will continue to rely on third parties to meet our commercial supply needs and a significant portion of our clinical supply needs for the foreseeable future. We have established our own small-scale manufacturing capabilities in Boston, which we use for clinical trial and commercial supplies, and are evaluating additional manufacturing capacity for our current and future products. 
Our supply chain for sourcing raw materials and manufacturing drug product ready for distribution is a multi-step global endeavor. In general, these raw materials are available from multiple sources. Third-party contract manufacturers, including some in China, perform different parts of our manufacturing process. Contract manufacturers may supply us with raw materials, convert these raw materials into drug substance and/or convert the drug substance into final dosage form. In addition, third parties assist us with packaging, warehousing and distribution of products.
Establishing and managing this global supply chain for each of our drugs and drug candidates requires a significant financial commitment and the creation and maintenance of numerous third-party contractual relationships. To ensure the stability of our supply chains, we aim to develop alternatives for each step of our manufacturing process at the time of, or shortly after, marketing approval. Therefore, at any point in time, we may have a limited number of single source manufacturers for certain steps in our manufacturing processes, particularly for recently launched products.
In order to manufacture our commercial products, we utilize both continuous manufacturing technology as well as batch manufacturing processes. While continuous process manufacturing has been used in many industries, we believe that we are the first company to obtain FDA approval for a fully-continuous drug product manufacturing process.
We have developed systems and processes to track, monitor and oversee our third-party manufacturers’ activities, including a quality assurance program intended to ensure that our third-party manufacturers comply with current Good Manufacturing Practices, or cGMP. We regularly evaluate the performance of our third-party manufacturers with the objective of confirming their continuing capabilities to meet our needs efficiently and economically. Manufacturing facilities, both foreign and domestic, are subject to inspections by or under the authority of the FDA and other U.S. and foreign government authorities.
The manufacturing processes for cell and genetic therapies are more complex than those required for small molecule drugs and require different systems, equipment, facilities and expertise. Additionally, we are unable to rely on a single process for all of our cell and genetic therapies; they must be customized for each program and therapy. Although we have been building expertise in these areas, which was augmented through our acquisitions of Exonics and Semma, we will need to continue to expand and strengthen our manufacturing infrastructure and capabilities, independently and/or through a third-party network, to successfully develop and commercialize cell and genetic therapies. We are focused on evaluating and securing potential relationships with various third parties that would enable us to expand and strengthen such capabilities to support our current and future cell and genetic therapy programs. We expect to make significant investment in our manufacturing capabilities and partnerships for our genetic and cell-based therapy programs in order to continue to advance and, in the future, commercialize these programs.

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We and CRISPR rely on third-party manufacturers to produce or process cell culture reagents, gene-editing components, such as Cas9 protein and guide RNA molecules, and to generate gene-edited cells to supply CTX001 for clinical trials. If approved, we expect to continue to rely on third-party manufacturers for commercial supply of CTX001. The current manufacturing process for CTX001 involves a number of steps prior to the final infusion of drug product into patients. Following mobilization and collection of blood cells from the patient at the clinical site, cells are transferred to a manufacturing site where HSPCs are purified and CRISPR/Cas9 gene-editing is performed. The edited cellular product, called CTX001, is frozen and transported back to the clinical site where it is stored prior to infusion into the patient. Each step must be completed successfully, and in a timely manner, requiring coordination between CRISPR, Vertex, clinical sites, third-party manufacturers and shipping vendors. To increase production to commercial levels, Vertex and CRISPR will need to coordinate manufacturing and logistics activities at a larger scale across multiple facilities in the geographies in which CTX001 is approved. Approval will rely on inspection and approval of these facilities by global health authorities.

COMPETITION
The pharmaceutical industry is characterized by extensive research efforts, rapid technological progress and intense competition. There are many public and private companies, including pharmaceutical companies and biotechnology companies, engaged in developing products for the indications our drugs are approved to treat and the therapeutic areas we are targeting with our research and development activities. Potential competitors also include academic institutions, government agencies, other public and private research organizations and charitable venture philanthropy organizations that conduct research, seek patent protection and/or establish collaborative arrangements for research, development, manufacturing and commercialization. Mergers and acquisitions in the pharmaceutical, biotechnology and gene therapy industries may result in a larger concentration of resources among a smaller number of our competitors. Some of our competitors may have substantially greater financial, technical, marketing and human resources than we do.
We believe that competition in our industry is based on, among other factors, innovative research, the effective and rapid development of drug candidates, the ability to market and obtain reimbursement for products and the ability to establish effective patent protection. We face competition based on the safety and efficacy of our product and drug candidates, the timing and scope of regulatory approvals, the availability and cost of supply, marketing and sales capabilities, reimbursement coverage, price, patent protection and other factors. Our competitors may develop or commercialize more effective, safer or more affordable products than we are able to develop or commercialize or obtain more effective patent protection. As a result, our competitors may commercialize products more rapidly or effectively than we do, which would adversely affect our competitive position, the likelihood that our drug candidates, if approved, would achieve and maintain market acceptance and our ability to generate meaningful revenues from our products. Future competitive products may render our products, or future products, obsolete or noncompetitive. Another key element of remaining competitive in our industry is recruiting and retaining leading scientific, technical and management personnel to conduct our research activities and advance our development programs, including with the commercial expertise to effectively market our products.
Cystic Fibrosis
A number of companies are seeking to identify and develop drug candidates for the treatment of CF, including CFTR modulators and other therapies intended to address the underlying causes of CF.
AbbVie, Inc., or AbbVie, has indicated that it plans to develop a triple combination CFTR modulator therapy comprised of a potentiator and correctors. Currently, AbbVie is evaluating the combination of a potentiator and a corrector in a Phase 2 clinical trial. In March 2020, AbbVie disclosed plans to file an IND application with the FDA for another corrector in the second quarter of 2020. In addition, Proteostasis Therapeutics, Inc. was developing potential CFTR modulator therapies prior to its acquisition by Yumanity Therapeutics, Inc., or Yumanity. Following the merger, Yumanity has announced plans to divest its CF program.
Other therapeutic approaches include addressing CF utilizing nucleic acid therapies and read-through agents, which are compounds that allow expression of a full-length protein. Nucleic acid therapies are under development by companies such as Translate Bio, Arcturus Therapeutics Holdings, Inc., Krystal Biotech, Inc., Spirovant Sciences, Inc. and 4D Molecular Therapeutics, Inc. Translate Bio is evaluating its mRNA therapy in a proof of concept Phase 1/2 clinical trial. Eloxx Pharmaceuticals, Inc. is evaluating a read-through therapy for nonsense CFTR mutations in two Phase 2 clinical trials.

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Our success in rapidly developing and commercializing our products may increase the resources that our competitors allocate to the development of these potential treatments for CF. If one or more competing therapies are successfully developed as a treatment for people with CF, our revenues from our current products and/or additional CF products, if then approved, could face significant competitive pressure.
Pipeline
In recent years, we have committed significant research resources to, and made significant investments in, our pipeline of potential new therapies for AAT deficiency, APOL1-mediated kidney diseases, TDT, SCD, muscular dystrophies, T1D and other diseases. We plan to continue investing in our pipeline, including expanding beyond small molecule therapies and into the discovery and development of cell and gene therapies. For example, we remain focused on our ongoing evaluation of CTX001, an investigational CRISPR/Cas9-based gene-editing therapy, for treatment of SCD and TDT currently in clinical development.
There are multiple approved treatments for TDT and SCD, including products from Novartis International AG, or Novartis, Global Blood Therapeutics, Inc. and Bristol Myers Squibb together with Acceleron Pharma, Inc. Bluebird Bio, Inc., or Bluebird, has a gene therapy, Zynteglo (Lentiglobin), approved by the European Medicines Agency, or EMA, for the treatment of certain TDT genotypes and in clinical development for SCD. In addition, various companies and private academic/medical institutes are developing gene therapy or gene-editing candidates for the treatment of SCD or TDT utilizing CRISPR technology, lenti-viral vectors, zinc finger nuclease technology, or base editing.
Many other pharmaceutical and biotechnology companies are also investing resources for discovery and development of small molecules, gene therapies and cell therapies to treat the same diseases for which we are developing therapies. If any of these competitors develop or successfully commercialize products involving therapies competitive with our pipeline therapies, the potential return on our investment in those pipeline therapies could be impacted.

GOVERNMENT REGULATION
Our operations and activities are subject to extensive regulation by numerous government authorities in the U.S., the E.U. and other countries. In the U.S., the E.U. and other countries, drugs are subject to rigorous regulations governing the testing, manufacture, labeling, storage, record keeping, approval, advertising and promotion of our products. As a result of these regulations, product development and product approval processes are very expensive and time consuming. The regulatory requirements applicable to drug development, approval, and marketing are subject to change. In addition, regulations and administrative guidance often are revised or reinterpreted by the agencies in ways that may significantly affect our business and our products. It is impossible to predict whether legislative changes will be enacted, or FDA or comparable ex-U.S. regulations, guidance or interpretations will change.
United States Government Regulation
New Drug Application Approval Processes
The process required by the FDA before a drug may be marketed in the U.S. generally involves the following:
•    completion of preclinical laboratory tests, animal studies and formulation studies conducted according to Good Laboratory Practices, or GLP, and other applicable regulations;
•    submission to the FDA of an IND application, which must become effective before clinical trials in the U.S. may begin;
•    performance of adequate and well-controlled clinical trials according to Good Clinical Practices, or GCP, to establish the safety and efficacy of the proposed drug for its intended use;
•    submission to the FDA of a New Drug Application, or an NDA;
•    satisfactory completion of an FDA inspection of the manufacturing facility or facilities at which the product will be produced to assess compliance with cGMP; and
•    FDA review and approval of the NDA.

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Once a drug candidate is identified for development, it enters the preclinical testing stage. Preclinical tests include laboratory evaluations of product chemistry, toxicity and formulation, as well as animal pharmacology and toxicology studies. An IND sponsor must submit the results of the preclinical tests, together with manufacturing information and analytical data, to the FDA as part of the IND, which seeks FDA approval to test the drug candidate in humans. Preclinical or nonclinical testing typically continues even after the IND is submitted.
If the FDA accepts the IND, the drug candidate can then be studied in human clinical trials to determine if the drug candidate is safe and effective. These clinical trials involve three separate phases that often overlap, can take many years and are expensive. These three phases, which are subject to considerable regulation, are as follows:
•    Phase 1. The drug initially is introduced into healthy human subjects and tested for safety, dosage tolerance, absorption, metabolism, distribution and elimination. In the case of some drug candidates for severe or life-threatening diseases, such as cancer, especially when the drug candidate may be inherently too toxic to ethically administer to healthy volunteers, the initial human testing is often conducted in patients.
•    Phase 2. Clinical trials are initiated in a limited patient population intended to identify possible adverse effects and safety risks, to preliminarily evaluate the efficacy of the drug candidate for specific targeted diseases and to determine dosage tolerance and optimal dosage.
•    Phase 3. Clinical trials are undertaken to further evaluate dosage, clinical efficacy and safety in an expanded patient population at geographically dispersed clinical trial sites. These clinical trials are intended to establish the overall risk-benefit ratio of the drug candidate and provide an adequate basis for regulatory approval and product labeling.
Phase 1, Phase 2 and Phase 3 testing may not be completed successfully within any specified period, if at all. The FDA or the sponsor may suspend a clinical trial at any time for a variety of reasons, including a finding that the healthy volunteers or patients are being exposed to an unacceptable health risk. All clinical trials must be conducted under the supervision of one or more qualified investigators in accordance with GCP. Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and more frequently in other situations, including the occurrence of serious adverse events. Information about certain clinical trials must be submitted within specific timeframes to the National Institutes of Health for public dissemination on the www.clinicaltrials.gov website.
The results of drug development, preclinical studies and clinical trials, along with descriptions of the manufacturing process, analytical tests conducted on the chemistry of the drug candidate, proposed labeling and other relevant information are submitted to the FDA as part of an NDA requesting approval to market the drug candidate. The FDA reviews each NDA submitted to ensure that it is sufficiently complete for substantive review before it accepts it for filing. It may request additional information rather than accept an NDA for filing.
Once the submission is accepted for filing, the FDA begins an in-depth review. The FDA reviews an NDA to determine, among other things, whether a drug candidate is safe and effective for its intended use and whether its manufacturing is cGMP-compliant to assure and preserve the drug candidate’s identity, strength, quality and purity. The FDA may refer the NDA to an advisory committee for review and recommendation as to whether the NDA should be approved and under what conditions. The FDA is not bound by the recommendation of an advisory committee, but it generally follows such recommendations. Before approving an NDA, the FDA will inspect the facility or facilities where the drug candidate is manufactured and tested. Additionally, before approving an NDA, the FDA may inspect one or more clinical trial sites to assure compliance with GCP requirements.
The FDA may require, as a condition of approval, restricted distribution and use, enhanced labeling, special packaging or labeling, expedited reporting of certain adverse events, pre-approval of promotional materials, restrictions on direct-to-consumer advertising or commitments to conduct additional research post-approval. The FDA will issue a complete response letter if the agency decides not to approve the NDA in its present form.
Biologics License Application Process
Certain of our drug candidates may be regulated by the FDA under the Food, Drug, and Cosmetic Act, or FDCA, and the Public Health Service Act as biologics. Biologics can present special safety, efficacy and manufacturing challenges that may differ from those present in the regulation of small molecule drugs. As such, while similar to the NDA review process described above, in lieu of filing an NDA, biologics require the submission of a Biologics License Application, or BLA, and approval of such BLA by the FDA prior to being marketed in the U.S.

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Expedited Review and Approval
The FDA has developed a number of distinct approaches to make new drugs available as rapidly as possible in cases where there is no available treatment or there are advantages over existing treatments.
The FDA may grant “accelerated approval” to products that have been studied for their safety and effectiveness in treating serious or life-threatening illnesses and that provide meaningful therapeutic benefit to patients over existing treatments. For accelerated approval, the product must have an effect on a surrogate endpoint or an intermediate clinical endpoint that is considered reasonably likely to predict the clinical benefit of a drug, such as an effect on irreversible morbidity and mortality. When approval is based on surrogate endpoints or clinical endpoints other than survival or morbidity, the sponsor will be required to conduct additional post-approval clinical studies to verify and describe the clinical benefit. These studies are known as “confirmatory trials.” Approval of a drug may be withdrawn, or the labeled indication of the drug changed if these trials fail to verify clinical benefit or do not demonstrate sufficient clinical benefit to justify the risks associated with the drug.
The FDA may grant “fast track” status to products that treat serious diseases or conditions and demonstrate the potential to address an unmet medical need. Fast track is a process designed to facilitate the development and expedite the review of such products by providing, among other things, more frequent meetings with the FDA to discuss the product’s development plan and rolling review, which allows submission of individually completed sections of an NDA or BLA for FDA review before the entire submission is completed. Fast track status does not ensure that a product will be developed more quickly or receive FDA approval.
“Breakthrough Therapy” designation is a process designed to expedite the development and review of drugs that are intended to treat a serious condition and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over available therapy on a clinically significant endpoint. For drugs and biologics that have been designated as Breakthrough Therapies, robust FDA-sponsor interaction and communication can help to identify the most efficient and expeditious path for clinical development while minimizing the number of patients placed in ineffective control regimens.
“Regenerative Medicine Advanced Therapy,” or RMAT, designation is a process created by the 21st Century Cures Act in December 2016. A product is eligible for RMAT designation if it is a regenerative medicine therapy that is intended to treat, modify, reverse or cure a serious or life-threatening disease or condition, and preliminary clinical evidence indicates that the product has the potential to address unmet medical needs for such disease or condition. The benefits of RMAT designation include the benefits available to breakthrough therapies, including potential eligibility for priority review and accelerated approval based on surrogate or intermediate endpoints.
The FDA may grant “priority review” status to products that, if approved, would provide significant improvement in the safety or effectiveness of the treatment, diagnosis, or prevention of serious conditions. Priority review is intended to reduce the time it takes for the FDA to review an NDA or BLA, with the goal to take action on the application within six months from when the application is filed, compared to ten months for a standard review.
Manufacturing Quality Control
Among the conditions for NDA or BLA approval is the requirement that the prospective manufacturer’s quality control and manufacturing procedures continually conform with cGMP. In complying with cGMP, manufacturers must devote substantial time, money and effort in the areas of production, quality control and quality assurance to maintain compliance. Material changes in manufacturing equipment, location or process, may result in additional regulatory review and approval. The FDA, and other regulatory agencies, conduct periodic visits to inspect equipment, facilities, and processes following the initial approval of a product. If a manufacturing facility is not in substantial compliance with the applicable regulations and requirements imposed when the product was approved, regulatory enforcement action may be taken, which may include a warning letter or an injunction against shipment of products from the facility and/or recall of products previously shipped. We rely, and expect to continue to rely, on third parties for the production of our products. Future FDA, state, and foreign inspections may identify compliance issues at the facilities of our contract manufacturers that may disrupt manufacture or distribution of our products or require substantial resources to correct.

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Post-approval Requirements
Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory standards is not maintained or if problems occur after the product reaches the market. Later discovery of previously unknown problems with a product may result in restrictions on the product or complete withdrawal of the product from the market. In addition, under the FDCA the sponsor of an approved drug in the U.S. may not promote that drug for unapproved, or off-label, uses, although a physician may prescribe a drug for an off-label use in accordance with the practice of medicine. After approval, some types of changes to the approved product, such as adding new indications, manufacturing changes and additional labeling claims, are subject to further FDA review and approval. In addition, the FDA may require testing and surveillance programs to monitor the effect of approved products that have been commercialized, and the FDA has the power to prevent or limit further marketing of a product based on the results of these post-marketing programs.
Products manufactured or distributed by us pursuant to FDA approvals are subject to continuing regulation by the FDA, including, among other things:
•    record-keeping requirements;
•    reporting of adverse experiences with the product;
•    providing the FDA with updated safety and efficacy information;
•    drug sampling and distribution requirements;
•    notifying the FDA and gaining its approval of specified manufacturing or labeling changes;
•    complying with certain electronic records and signature requirements; and
•    complying with FDA promotion and advertising requirements.
Failure to comply with the applicable U.S. requirements at any time during the drug development process, approval process or after approval, may subject us or our collaborators to administrative or judicial sanctions, any of which could have a material adverse effect on us. These sanctions could include:
•    refusal to approve or delay in review of pending applications;
•    withdrawal of an approval or the implementation of limitations on a previously approved indication for use;
•    imposition of a clinical hold, a risk mitigation and evaluation strategy or other safety-related limitations;
•    warning letters or “untitled letters”;
•    product seizures;
•    total or partial suspension of production or distribution; or
•    injunctions, fines, disgorgement, refusals of government contracts, or civil or criminal penalties.
Patent Term Restoration and Regulatory Exclusivity
Upon approval, products may be entitled to certain kinds of exclusivity under applicable intellectual property and regulatory regimes. The Drug Price Competition and Patent Term Restoration Act of 1984 (commonly known as the Hatch-Waxman Act) permits a patent restoration term of up to five years as compensation for patent term lost during product development and the FDA regulatory review process. The length of the patent extension is roughly based on 50 percent of the period of time from the filing of an IND for a compound to the submission of the NDA for such compound, plus 100 percent of the time period from NDA submission to regulatory approval. The extension, however, cannot exceed five years and the patent term remaining after regulatory approval cannot exceed 14 years.
If the FDA approves a drug product that contains an active ingredient not previously approved, the product is typically entitled to five years of non-patent regulatory exclusivity. Other products may be entitled to three years of exclusivity if approval was based on the FDA’s reliance on new clinical studies essential to approval submitted by the NDA applicant. If

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the NDA applicant studies the product for use by children, the FDA may grant pediatric exclusivity, which extends by 180 days each existing exclusivity (patent and regulatory) related to the product.
Biologics are also entitled to exclusivity under the Biologics Price Competition and Innovation Act, which was passed as Title VII to the ACA. The law provides a pathway for approval of biosimilars following the expiration of 12 years of exclusivity for the innovator biologic and a potential additional 180 day-extension term for conducting pediatric studies. Biologics are also eligible for orphan drug exclusivity, as discussed below. The law also includes an extensive process for the innovator biologic and biosimilar manufacturer to litigate patent infringement, validity, and enforceability prior to the approval of the biosimilar. There have been ongoing federal legislative and administrative efforts as well as judicial challenges seeking to repeal, modify or invalidate some or all of the provisions of the ACA. While none of those efforts have focused on changes to the provisions of the ACA related to the biosimilar regulatory framework, if the ACA is repealed, substantially modified, or invalidated, it is unclear what, if any, impact such action would have on biosimilar regulation.
Under the Orphan Drug Act, the FDA may grant orphan drug designation to drug candidates intended to treat a rare disease or condition, which is generally a disease or condition that affects fewer than 200,000 people in the U.S.
If a drug candidate that has orphan drug designation subsequently receives the first FDA approval for that drug for the disease for which it has such designation, the product is entitled to orphan drug exclusivity, which means that the FDA may not approve any other applications to market the same drug for the same indication for seven years following marketing approval, except in certain very limited circumstances, such as if the later product is shown to be clinically superior to the orphan product. Orphan drug exclusivity, however, also could block the approval of our drug candidates for seven years if a competitor first obtains approval of the same product as defined by the FDA or if our drug candidate is determined to be contained within the competitor’s product for the same indication or disease. KALYDECO, ORKAMBI, SYMDEKO, and TRIKAFTA have been granted orphan drug exclusivity by the FDA.
Foreign Regulation
We conduct clinical trials and market our products in numerous jurisdictions outside the U.S. Most of these jurisdictions have clinical trial, product approval and post-approval regulatory processes that are similar in principle to those in the U.S. Thus, whether or not we obtain FDA approval for a drug candidate, we must obtain approval by the comparable regulatory authorities of foreign countries or economic areas, such as the E.U., before we can commence clinical trials or market products in those countries or areas. The approval process and requirements governing the conduct of clinical trials, product licensing, pricing and reimbursement vary greatly from place to place, and the time may be longer or shorter than that required for FDA approval.
Under E.U. regulatory systems, a company may submit marketing authorization applications either under a centralized or decentralized procedure. The centralized procedure, which is compulsory for medicines produced by biotechnology or those medicines intended to treat AIDS, cancer, neurodegenerative disorders, or diabetes and optional for those medicines that are highly innovative, provides for the grant of a single marketing authorization that is valid for all E.U. member states. In addition to the centralized procedure, Europe also has a nationalized procedure, which requires a separate application to and approval determination by each country; a decentralized procedure, whereby applicants submit identical applications to several countries and receive simultaneous approval; and a mutual recognition procedure, where applicants submit an application to one country for review and other countries may accept or reject the initial decision.
Other Regulations
Pharmaceutical companies are also subject to various laws pertaining to healthcare “fraud and abuse,” including anti-kickback and false claims laws. Anti-kickback laws generally make it illegal to knowingly and willfully solicit, offer, receive or pay any remuneration in return for or to induce the referral of business, including the purchase or prescription of a particular drug that is reimbursed by a state or federal health care program. False claims laws prohibit knowingly and willingly presenting, or causing to be presented for payment to third-party payors (including Medicare and Medicaid), any claims for reimbursed drugs or services that are false or fraudulent, claims for items or services not provided as claimed or claims for medically unnecessary items or services. Violations of fraud and abuse laws may be punishable by criminal and/or civil sanctions, including fines and civil monetary penalties, as well as by the possibility of exclusion from federal healthcare programs (including Medicare and Medicaid). Liability under the false claims laws may also arise when a violation of certain laws or regulations related to the underlying products (e.g., violations regarding improper promotional activity or unlawful

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payments) contributes to the submission of a false claim. If we were subject to allegations concerning, or convicted of violating, these laws, our business could be harmed.
Laws and regulations also have been enacted by the federal government and various states to regulate the sales and marketing practices of pharmaceutical manufacturers. The laws and regulations generally limit financial interactions between manufacturers and health care providers, require manufacturers to adopt certain compliance standards or require disclosure to the government and public of such interactions. The laws include U.S. federal and state “sunshine” provisions. The federal sunshine provisions apply to pharmaceutical manufacturers with products reimbursed under certain government programs and require those manufacturers to disclose annually to the federal government (for re-disclosure to the public) certain payments and other transfers of value made to physicians and teaching hospitals and, beginning with disclosures in 2022, to certain non-physician practitioners. State laws may also require disclosure of pharmaceutical pricing information and marketing expenditures. Many of these laws and regulations contain requirements that are subject to interpretation. Outside the U.S., other countries have implemented requirements for disclosure of financial interactions with healthcare providers and additional countries may consider or implement such laws.
We are subject to various federal and foreign laws that govern our international business practices with respect to payments to government officials. Those laws include the U.S. Foreign Corrupt Practices Act, or FCPA, which prohibits U.S. companies and their representatives from paying, offering to pay, promising, or authorizing the payment of anything of value to any foreign government official, government staff member, political party, or political candidate for the purpose of obtaining or retaining business or to otherwise obtain favorable treatment or influence a person working in an official capacity. In many countries, the health care professionals we regularly interact with may meet the FCPA’s definition of a foreign government official. We are also subject to U.K. Bribery Act 2010, or the Bribery Act, which proscribes giving and receiving bribes in the public and private sectors, bribing a foreign public official, and failing to have adequate procedures to prevent employees and other agents from giving bribes. U.S. companies that conduct business in the United Kingdom, or U.K., generally will be subject to the Bribery Act.
We are subject to federal laws, including the Medicaid Drug Rebate Program, that require pharmaceutical manufacturers to report certain calculated product prices to the government or provide certain discounts or rebates to government authorities or private entities, often as a condition of reimbursement under government healthcare programs.
Our collection and use of personal data as part of our business activities is subject to various privacy and data security laws and regulations, including oversight by various regulatory or other governmental bodies, in the U.S., E.U., U.K., Canada, Australia and other jurisdictions. Such laws and regulations have the potential to affect our business materially, continue to evolve and increasingly are being enforced.
Our present and future business has been and will continue to be subject to various other laws and regulations. Various laws, regulations and recommendations relating to safe working conditions, laboratory practices, the experimental use of animals, and the purchase, storage, movement, import, export and use and disposal of hazardous or potentially hazardous substances are or may be applicable to our activities. In addition, as we expand our pipeline and contemplate different approaches that may incorporate the use of medical devices, such approaches may necessitate compliance with regulatory laws applicable to medical devices, including those governing the testing, manufacture, approval, distribution, and marketing of medical devices. Furthermore, the extent of government regulation, which might result from future legislation or administrative action, cannot accurately be predicted.
We have a corporate compliance program designed to actively identify, prevent and mitigate risk through the implementation of compliance policies and systems and through the promotion of a culture of compliance. We expect to continue to devote substantial resources to maintain, administer and expand the compliance program globally. We cannot be certain, however, that our compliance program will ensure compliance with the various complex laws and regulations to which we are subject now or in the future.


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EMPLOYEES AND HUMAN CAPITAL MANAGEMENT
As of December 31, 2020, we had approximately 3,400 employees. Of these employees, approximately 2,800 were based in the U.S. and approximately 600 were based outside the U.S. Our employees are not covered by a collective bargaining agreement, except for a small number of employees outside the U.S. We consider our relations with our employees to be good. We continue to face intense competition for our personnel from our competitors and other companies throughout our industry and from universities and research institutions.
We rely on skilled, experienced, and innovative employees to conduct the operations of our company. The biotechnology industry is very competitive and recruiting and retaining such employees is important to the continued success of our business. We are committed to building an outstanding, committed and passionate team at Vertex, and we focus on a culture that values inclusion, diversity and equity. We believe that each employee brings unique perspectives and strengths, and by embracing these strengths, we can do our best work for patients. We focus on recruiting, retaining, and developing employees from a diverse range of backgrounds to conduct our research, development, and commercial activities.
Our commitment to diversity, inclusion and equity begins with our executive management team: four of our ten members are women and/or from diverse racial and ethnic groups. On our Board of Directors, six of our ten members are women and/or from a diverse racial and ethnic group. As of December 31, 2020, women represented 53% of our global workforce and 38% of our leadership (VP and above). As of December 31, 2020, 34% of our U.S. workforce, and 18% of our U.S. leadership (VP and above), were from diverse racial and ethnic groups.
The leader of our diversity, inclusion, and equity strategy and efforts is a Vice President in our human resources group. Additionally, our employee resource networks promote connectivity and collaboration across levels and functions, and engage colleagues in personal and professional development opportunities, including mentoring, community outreach, and cultural awareness activities.
To promote our employees’ continued well-being and development, we offer a variety of inclusive benefits and opportunities. We offer comprehensive work-life benefits, including health, dental, and income protection, such as life insurance and retirement savings programs. In 2020, we enhanced and expanded our employee benefits in response to the COVID-19 pandemic. For example, we increased company-wide personal time off, provided resources to enable employees to work from home, and introduced and expanded mental wellness tools for all employees. Our management has continued to assess and respond to the evolving needs of our workforce throughout the pandemic.
In addition, we provide our employees with career development and advancement opportunities, including job rotations, mentoring and managerial training. We also are committed to identifying and developing our next generation leaders and have developed programs focused on talent and succession for critical roles in our organization.
Succession Planning
In 2020, we successfully executed a leadership succession plan with the transition of Dr. Kewalramani to the role of Chief Executive Officer and our former Chief Executive Officer, Dr. Leiden, to the role of Executive Chairman. This transition was the culmination of a multi-year planning process led by our independent directors.

OTHER MATTERS
Financial Information and Significant Customers
The Company operates in one segment, pharmaceuticals. Financial information about our revenue by product and significant customers is set forth in Note Q, “Segment Information,” to our consolidated financial statements included in this Annual Report on Form 10-K.
Information Available on the Internet
Our internet address is www.vrtx.com. Our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K, and all amendments to those reports, are available to you free of charge through the “Investors-SEC Filings” section of our website as soon as reasonably practicable after those materials have been electronically filed with, or furnished to, the Securities and Exchange Commission.

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Corporate Information
Vertex was incorporated in Massachusetts in 1989, and our principal executive offices are located at 50 Northern Avenue Boston, Massachusetts 02210.


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INFORMATION ABOUT OUR EXECUTIVE OFFICERS
The names, ages and positions held by our executive officers are as follows:
Name
Age
Position
Reshma Kewalramani, M.D.48Chief Executive Officer and President
Jeffrey M. Leiden, M.D., Ph.D.65Executive Chairman
David Altshuler, M.D., Ph.D. 56Executive Vice President, Global Research and Chief Scientific Officer
Stuart A. Arbuckle55Executive Vice President and Chief Commercial Officer
Carmen Bozic, M.D.58Executive Vice President, Global Medicines Development and Medical Affairs, and Chief Medical Officer
Michael Parini, J.D.46Executive Vice President, Chief Administrative, Legal and Business Development Officer
Amit K. Sachdev, J.D.53Executive Vice President, Chief Patient Officer
Bastiano Sanna, Ph.D.46Executive Vice President, Chief of Cell and Genetic Therapies
Ourania “Nia” Tatsis, Ph.D.51Executive Vice President and Chief Regulatory and Quality Officer
Charles F. Wagner, Jr.52Executive Vice President and Chief Financial Officer
Paul M. Silva54Senior Vice President and Chief Accounting Officer
Dr. Kewalramani has been our Chief Executive Officer and President since April 2020 and a member of our Board of Directors since February 2020. Dr. Kewalramani was our Executive Vice President and Chief Medical Officer from April 2018 through April 2020. She was our Senior Vice President, Late Development from February 2017 until April 2018. From August 2004 to January 2017, she served in roles of increasing responsibility at Amgen Inc., most recently as Vice President, Global Clinical Development, Nephrology & Metabolic Therapeutic Area and as Vice President, U.S. Medical Organization. From 2014 through 2019, Dr. Kewalramani was the industry representative to the FDA’s Endocrine and Metabolic Drug Advisory Committee. She completed her internship and residency in Internal Medicine at the Massachusetts General Hospital and her fellowship in Nephrology at the Massachusetts General Hospital and Brigham and Women’s Hospital combined program. Dr. Kewalramani holds a B.A. from Boston University and an M.D. from Boston University School of Medicine. Dr. Kewalramani also completed the General Management Program at Harvard Business School and is an alumnus of the school.
Dr. Leiden became our Executive Chairman in April 2020. He was our Chief Executive Officer and President from 2012 through March 2020. He has been a member of our Board of Directors since July 2009, the Chairman of our Board of Directors since May 2012, and served as our lead independent director from October 2010 through December 2011. Dr. Leiden was a Managing Director at Clarus Ventures, a life sciences venture capital firm, from 2006 through January 2012. Dr. Leiden was President and Chief Operating Officer of Abbott Laboratories, Pharmaceuticals Products Group, and a member of the Board of Directors of Abbott Laboratories from 2001 to 2006. From 1987 to 2000, Dr. Leiden held several academic appointments, including the Rawson Professor of Medicine and Pathology and Chief of Cardiology and Director of the Cardiovascular Research Institute at the University of Chicago, the Elkan R. Blout Professor of Biological Sciences at the Harvard School of Public Health, and Professor of Medicine at Harvard Medical School. He is an elected member of both the American Academy of Arts and Sciences and the Institute of Medicine of the National Academy of Sciences. Dr. Leiden serves as a director of Massachusetts Mutual Life Insurance Company, an insurance company. Dr. Leiden was a director and the non-executive Vice Chairman of the board of Shire plc, a specialty biopharmaceutical company, from 2006 to January 2012 and a director of Quest Diagnostics, a medical diagnostics company, from December 2014 to May 2019. Dr. Leiden received his M.D., Ph.D. and B.A. degrees from the University of Chicago.
Dr. Altshuler has been our Executive Vice President, Global Research and Chief Scientific Officer since January 2015 and was a member of our Board of Directors from May 2012 through December 2014. Dr. Altshuler was one of four founding members of the Broad Institute, a research collaboration of Harvard University and the Massachusetts Institute of Technology, The Whitehead Institute and the Harvard Hospitals. He served as the Director of the Institute’s Program in Medical and Population Genetics from 2003 through December 2014 and as the Institute’s Deputy Director and Chief Academic Officer from 2009 through December 2014. Dr. Altshuler joined the faculty at Harvard Medical School and the Massachusetts General Hospital in 2000 and held the academic rank of Professor of Genetics and Medicine from 2008 through December 2014. He served as Adjunct Professor of Biology at MIT from 2012 through December 2014. Dr. Altshuler earned a B.S. from MIT, a Ph.D. from Harvard University and an M.D. from Harvard Medical School. Dr. Altshuler completed his clinical training in Internal Medicine, and in Endocrinology, Diabetes and Metabolism, at the Massachusetts General Hospital.

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Mr. Arbuckle is our Executive Vice President, Chief Commercial Officer, a position he has held since September 2012. Prior to joining us, Mr. Arbuckle held multiple commercial leadership roles at Amgen, Inc. from July 2004 through August 2012. Mr. Arbuckle has worked in the biopharmaceuticals industry since 1986, including more than 15 years at GlaxoSmithKline plc, where he held sales and marketing roles of increasing responsibility for medicines aimed at treating respiratory, metabolic, musculoskeletal, cardiovascular and other diseases. He served as a member of the Board of Directors of Cerulean Pharma, Inc. from June 2015 through July 2017 and has served as a member of the Board of Directors of ImmunoGen, Inc. since January 2018 and of Rhythm Pharmaceuticals Inc. since July 2019. Mr. Arbuckle holds a BSc in pharmacology and physiology from the University of Leeds.
Dr. Bozic is our Executive Vice President, Global Medicines Development and Medical Affairs, a position she has held since October 2019, and she has been our Chief Medical Officer since April 2020. She was our Senior Vice President and Head of Global Clinical Development from May 2019 to October 2019. Prior to joining Vertex, Dr. Bozic spent more than 20 years at Biogen Inc., most recently as Senior Vice President of Global Development and Portfolio Transformation from 2015 to May 2019 and as Senior Vice President of Clinical and Safety Sciences from 2013 to 2015. Dr. Bozic has served as the industry representative to the FDA’s Risk Communication Advisory Committee, and was a member of PhRMA’s Clinical and Preclinical Development Committee and the Board of Managers at BioMotiv. She is a member of the Clinical Advisory Board at Akili Interactive. She received her M.D., C.M., completed her residency, and was Chief Resident in Internal Medicine at McGill University. She completed her fellowship in Pulmonary and Critical Care Medicine at Brigham and Women’s Hospital and was an Associate Physician at Beth Israel Deaconess Medical Center and Harvard Medical School before joining the biopharmaceutical industry.
Mr. Parini is our Executive Vice President, Chief Administrative, Legal and Business Development Officer, a role he has held since March 2020. From January 2017 to March 2020, he was our Executive Vice President, Chief Legal and Administrative Officer. From January 2016 to January 2017, he was our Executive Vice President and Chief Legal Officer. From 2004 until he joined Vertex, Mr. Parini served in various roles of increasing responsibility at Pfizer Inc., a pharmaceutical company, most recently as Senior Vice President and Associate General Counsel. Prior to Pfizer, Mr. Parini was an attorney at Akin, Gump, Strauss, Hauer & Feld, L.L.P. Mr. Parini holds a B.A. from Georgetown University and a J.D. from the Georgetown University Law Center.
Mr. Sachdev is our Executive Vice President, Chief Patient Officer, a role he has held since October 2019. In addition, Mr. Sachdev has served in the role of Chief of Staff to the CEO since April 2020. He served as our Executive Vice President and Chief Regulatory Officer from January 2017 until September 2019, and as our Executive Vice President, Policy, Access and Value from October 2014 through December 2016. In 2010, he established our first international commercial operations in Canada. In 2007, he joined us as a Senior Vice President, and has led our government affairs and public policy activities, as well as our patient advocacy programs. Prior to joining us, Mr. Sachdev served as Executive Vice President, Health of the Biotechnology Industry Organization (BIO) and was the Deputy Commissioner for Policy at the FDA, where he also served in several other senior positions. Prior to the FDA, Mr. Sachdev served as Majority Counsel to the Committee on Energy and Commerce in the United States House of Representatives and practiced law at the Chemical Manufacturers Association, and subsequently at the law firm of Ropes & Gray LLP. He has served as a member of the Board of Directors of Eiger BioPharmaceuticals since May 2019. Mr. Sachdev holds a B.S from Carnegie Mellon University and a J.D. from Emory University School of Law.
Dr. Sanna has been our Executive Vice President, Chief of Cell and Genetic Therapies since February 2020. From October 2019 to February 2020, he was President of Semma Therapeutics, Inc., a private biotechnology company that Vertex acquired in October 2019. Prior to the acquisition, Dr. Sanna was the Chief Executive Officer and President of Semma from May 2018 until October 2019. Dr. Sanna was Chief Operating Officer at Magenta Therapeutics from May 2016 through April 2018. He served on the leadership team of the Novartis Cell and Gene Therapy Unit as the Global Program Head of Stem Cell Transplant and early programs from 2014 through 2016. Dr. Sanna served as Global Head of Strategic Planning and Portfolio Management at the Novartis Institutes for BioMedical Research from 2010 through 2014. Dr. Sanna has served as a member of the Board of Directors of Adicet Bio, Inc., a biotechnology company since December 2020. Dr. Sanna received a Ph.D. in Biotechnology from the University of Sassari.
Dr. Tatsis has been our Executive Vice President, Chief Regulatory and Quality Officer since August 2020. She was our Senior Vice President and Chief Regulatory Officer from October 2019 to August 2020. She served as our Senior Vice President, Global Regulatory Affairs from September 2017 to October 2019. Prior to joining Vertex, Dr. Tatsis held positions of increasing responsibility at several pharmaceutical companies, including Sanofi, Stemnion, Pfizer, and Wyeth. Most

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recently, from 2014 to 2017, she was Vice President, Head of Global Regulatory Affairs, at the Sanofi Genzyme Business Unit focused on Inflammation/Immunology, Rare Disease, Multiple Sclerosis, Ophthalmology, Neurology, and Oncology/Immuno-Oncology. Dr. Tatsis also worked as an associate staff scientist and research fellow in Immunology and Vaccine Development at the Wistar Institute and completed a post-doctoral research fellowship in Immunology at Thomas Jefferson University. She received her Ph.D. in Cell and Molecular Biology from the University of Vermont and holds a B.S. in Biology from Temple University.
Mr. Wagner has been our Executive Vice President, Chief Financial Officer since April 2019. Prior to joining Vertex, Mr. Wagner was Chief Financial Officer and Executive Vice President, Finance of Ortho Clinical Diagnostics, a Carlyle Group portfolio company, from June 2015 to March 2019. In that role, he led the finance, accounting, tax, treasury, global information systems, lender relations, and acquisitions and divestiture groups, as well as shared leadership over several enterprise-wide projects. From July 2012 to June 2015, Mr. Wagner served as Executive Vice President, Chief Financial Officer of Bruker Corporation, a scientific instruments manufacturer. Prior to that, Mr. Wagner served as Chief Financial Officer for Progress Software Corporation, a provider of enterprise software, and Millipore Corporation, a global provider of products and services in the life science tools market. Mr. Wagner served as a director and chairman of the Audit Committee of Good Start Genetics, Inc. from April 2014 to August 2017 and served as a director and member of the Audit Committee of Bruker Corporation from August 2010 to June 2012. Mr. Wagner holds a B.S. in accounting from Boston College and a M.B.A from Harvard Business School.
Mr. Silva is our Senior Vice President, Chief Accounting Officer, a position he has held since April 2011. Mr. Silva also served as our interim Chief Financial Officer from January 2019 to April 2019. Mr. Silva joined us in August 2007 as Senior Director, Accounting Operations and was our Vice President and Corporate Controller from September 2008 through April 2011. Prior to joining us, he was the Vice President, Internal Reporting at Iron Mountain Incorporated from July 2006 until August 2007 and a consultant to Iron Mountain’s finance department from April 2005 until July 2006. He was the Finance Director of the Bioscience Technologies Division of Thermo Electron Corporation from 2002 to April 2005. Mr. Silva holds a B.S. in accounting from Assumption College.


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ITEM 1A. RISK FACTORS
Investing in our common stock involves a high degree of risk, and you should carefully consider the risks and uncertainties described below in addition to the other information included or incorporated by reference in this Annual Report on Form 10-K. If any of the following risks or uncertainties actually occurs, our business, financial condition or results of operations would likely suffer, possibly materially. In that case, the trading price of our common stock could decline.
SUMMARY OF RISK FACTORS
Our business is subject to numerous risks and uncertainties, discussed in more detail in the following section. These risks include, among others, the following key risks:
Risks Related to Our Business
All of our product revenues and the vast majority of our total revenues are derived from sales of medicines for the treatment of CF. If we are unable to continue to increase revenues from sales of our CF medicines, our business would be materially harmed and the market price of our common stock would likely decline.
We are investing significant resources in the research and development of therapies for serious diseases other than CF, and if we are unable to successfully commercialize one or more of these therapies, our business could be materially harmed.
If our competitors bring drugs with superior product profiles to market, our drugs may not be competitive and our revenues could decline.
If we discover safety issues with any of our products or if we fail to comply with continuing U.S. and applicable foreign regulations, commercialization efforts for the product could be negatively affected, the approved product could lose its approval or sales could be suspended, and our business could be materially harmed.
If physicians and patients do not accept our medicines, or if patients do not remain on treatment or comply with their prescribed dosing regimen, our product revenues would be materially harmed in future periods.
Government and other third-party payors seek to contain costs of health care through legislative and other means. If they fail to provide coverage and adequate reimbursement rates for our products, our revenues will be harmed.
We have experienced challenges commercializing products outside of the U.S, and our future revenues will be dependent on our ability to obtain adequate reimbursement for our products.
We have limited experience developing cell and genetic therapies and could experience challenges with these programs, which could result in delays or prevent the development, manufacturing and commercialization of our cell and genetic therapies.
Risks Related to Development and Clinical Testing of Our Products and Drug Candidates
Our drug candidates remain subject to clinical testing and regulatory approval. Our future success is dependent on our ability to successfully develop additional drug candidates for both CF and non-CF indications.
If we are unable to obtain regulatory approval, we will be unable to commercialize our drug candidates.
If clinical trials are prolonged or delayed, our development timelines for the affected development program could be extended, our costs to develop the drug candidate could increase and the competitive position of the drug candidate could be adversely affected.
Risks Related to Government Regulation
If regulatory authorities interpret any of our conduct, including our marketing practices, as being in violation of applicable health care laws, including fraud and abuse laws, laws prohibiting off-label promotion, disclosure laws or other similar laws, we may be subject to civil or criminal penalties.

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If we fail to comply with our reporting and payment obligations under the Medicaid Drug Rebate Program or other governmental pricing programs in the U.S., we could be subject to additional reimbursement requirements, penalties, sanctions and fines which could have a material adverse effect on our business, financial condition, results of operations and growth prospects.
If our processes and systems are not compliant with regulatory requirements, we could be subject to restrictions on marketing our products or could be delayed in submitting regulatory filings seeking approvals for our drug candidates.
We are subject to various and evolving laws and regulations governing the privacy and security of personal data, and our failure to comply could adversely affect our business, result in fines and/or criminal penalties, and damage our reputation.
Risks Related to Business Development Activities
Our ability to execute on our long-term strategy depends in part on our ability to engage in transactions and collaborations with other entities that add to our pipeline or provide us with new commercial opportunities.
We may not realize the anticipated benefits of acquisitions of businesses or technologies, and the integration following any such acquisition may disrupt our business and management.
We face risks in connection with existing and future collaborations with respect to the development, manufacture and commercialization of our products and drug candidates.
We may not be able to attract collaborators or external funding for the development and commercialization of certain of our drug candidates.
Risks Related to Third-Party Manufacturing and Reliance on Third Parties
We depend on third-party manufacturers to manufacture our products and the materials we require for our clinical trials. We may not be able to maintain these relationships and could experience supply disruptions outside of our control.
We rely on third parties to conduct pre-clinical work, clinical trials and other activities, and those third parties may not perform satisfactorily, including failing to meet established deadlines for the completion of such studies and/or trials or failing to satisfy regulatory requirements.
Risks Related to Intellectual Property
If our patents do not protect our drugs or our drugs infringe third-party patents, we could be subject to litigation which could result in injunctions preventing us from selling our products or substantial liabilities.
Uncertainty over intellectual property in the pharmaceutical and biotechnology industry has been the source of litigation and other disputes, which is inherently costly and unpredictable.
We may be subject to claims by third parties asserting that our employees or we have misappropriated their intellectual property, or claiming ownership of what we regard as our own intellectual property.
Risks Related to Our Operations
Risks associated with operating in foreign countries could materially adversely affect our business.
We are subject to risks associated with the global COVID-19 pandemic.
If we fail to attract and retain skilled employees, our business could be materially harmed.
Our business faces potential risks relating to the United Kingdom’s withdrawal from the European Union.
Risks Related to Financial Results and Holding Our Common Stock
Our stock price may fluctuate.
Changes in tax laws, regulations and treaties could affect our future taxable income.

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Risks Related to Our Business
All of our product revenues and the vast majority of our total revenues are derived from sales of medicines for the treatment of CF. If we are unable to continue to increase revenues from sales of our CF medicines, our business would be materially harmed and the market price of our common stock would likely decline.
Our net product revenues and the vast majority of our total revenues are derived from the sale of our CF medicines. As a result, our future success is dependent upon our ability to increase revenues from sales of our CF medicines. This will require us to continue to gain approval and reimbursement for our triple combination therapy in ex-U.S. markets and successfully develop and commercialize our triple combination therapy for younger children with CF.
Our concentrated source of revenues presents a number of risks to our business, including:
that one or more competing therapies may successfully be developed as a treatment for people with CF;
that reimbursement policies of payors and other third parties may make it difficult to obtain reimbursement or reduce the net price we receive for our products;
that we may experience manufacturing or supply disruptions for our CF medicines; and
that we may experience adverse developments with respect to development or commercialization of our CF medicines and/or CF drug candidates.
If any of the above risks were to materialize, if we are otherwise unable to increase revenues from sales of our CF medicines, or if we do not meet the expectations of investors or public equity market analysts, our business would be materially harmed and our ability to fund our operations could be adversely affected. For example, if we are unable to increase revenues from sales of our CF medicines, our ability to fund our research and development programs for the discovery and development or acquisition of new products would be harmed, which would limit our ability to diversify our revenue base and our stock price would likely be adversely affected.
We are investing significant resources in the research and development of therapies for serious diseases other than CF, and if we are unable to successfully commercialize one or more of these therapies, our business could be materially harmed.
We are investing significant resources in the research and development of medicines for serious diseases including AAT deficiency, APOL1-mediated kidney diseases, pain, beta thalassemia, SCD, T1D, DMD and DM1. Some of these programs have progressed into clinical trials, while others are still in pre-clinical development. Product development is highly uncertain and expensive, and product candidates that may appear promising in the early phases of research and development may fail to reach commercial success for many reasons, including the failure to demonstrate acceptable clinical trial results or obtain marketing approval, the inability to manufacture or commercialize the product candidate on economically feasible terms, or the appearance of safety issues. For example, in October 2020, we discontinued development of VX-814, a drug candidate for the treatment of AAT, based on the safety and pharmacokinetic profile observed in a Phase 2 clinical trial.
Even if we gain marketing approval for one or more pipeline products, we cannot be sure that we will obtain market acceptance or adequate reimbursement levels from third-party payors or foreign governments for such products. Additionally, many of the therapies that we are developing in our pipeline target rare diseases that affect a limited number of patients. There can be no guarantee that we will effectively identify patients that are eligible for enrollment in our clinical trials or treatment with our drug candidates. Even if we do successfully identify eligible patients, the number of patients that our drug candidates are able to treat may turn out to be lower than we expect or new patients may become increasingly difficult to identify, each of which may adversely affect our revenues and materially harm our business. For these and other reasons, we may never be successful in expanding our pipeline and future revenue may continue to depend on sales of our CF medicines.

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If our competitors bring drugs with superior product profiles to market, our drugs may not be competitive and our revenues could decline.
A number of companies are seeking to identify and develop drug candidates for the treatment of CF and other therapeutic areas we are targeting with our research and development activities. Our success in rapidly developing and commercializing our CF medicines may increase the resources that our competitors allocate to the development of potential competitive treatments. If one or more competing therapies are successfully developed as a treatment for people with CF or any of the other diseases we are currently targeting in our pipeline, our products and our net product revenues could face competitive pressures. If one or more competing therapies prove to be superior to our then existing products and/or drug candidates, our business could be materially adversely affected.
In addition, our business faces competition from major pharmaceutical companies possessing substantially greater financial resources than we possess. We also face competition from numerous smaller public and private companies, academic institutions, government agencies, public and private research organizations and charitable venture philanthropy organizations that conduct research, seek patent protection and/or establish collaborative arrangements for research, development, manufacturing and commercialization.
Mergers and acquisitions in the pharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of our competitors. Smaller and other early-stage companies also may prove to be significant competitors, particularly through collaborative arrangements with large and established companies. These third parties compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs.
Our products and any drugs that we develop in the future may not be able to compete effectively with marketed drugs or new drugs that may be developed by competitors. The risk of competition is particularly important to our company because substantially all of our revenues as well as our most advanced drug candidates are related to the treatment of people with CF. There are many other companies developing drugs for the same patient populations that we are pursuing. In order to compete successfully in these areas, we must demonstrate improved safety, efficacy and/or tolerability, ease of manufacturing, and gain and maintain market acceptance over competing drugs.
If we discover safety issues with any of our products or if we fail to comply with continuing U.S. and applicable foreign regulations, commercialization efforts for the product could be negatively affected, the approved product could lose its approval or sales could be suspended, and our business could be materially harmed.
Our products are subject to continuing regulatory oversight, including the review of additional safety information. Drugs are more widely used by patients once approval has been obtained and therefore side effects and other problems may be observed after approval that were not seen or anticipated, or were not as prevalent or severe, during pre-approval clinical trials or nonclinical studies. The subsequent discovery of previously unknown or underestimated problems with a product could negatively affect commercial sales of the product, result in restrictions on the product or lead to the withdrawal of the product from the market. Three of our commercial products are combination products, and each of our products shares at least one active pharmaceutical ingredient with another of our products. As a result, if any of our CF products were to experience safety issues, our other CF products may be adversely affected. The reporting of adverse safety events involving our products or public speculation about such events could cause our stock price to decline or experience periods of volatility. Our business also may be materially harmed by impaired sales of our products, denial or withdrawal of regulatory approvals, required label changes or additional clinical trials, reputational harm, or government investigations or lawsuits brought against us.
In addition, our products are subject to ongoing regulatory requirements governing the testing, manufacturing, labeling, packaging, storage, advertising, promotion, sale, distribution, import, export, recordkeeping and submission of safety and other post-market information. We and our third-party manufacturers must comply with cGMP and other applicable regulations governing the manufacturing and distribution of our products. Regulatory authorities periodically inspect our drug manufacturing facilities, and those of our third-party manufacturers, to evaluate compliance with cGMP and other regulatory requirements.
If we or our collaborators, or third-parties acting on our behalf, fail to comply with applicable continuing regulatory requirements, we or our collaborators may be subject to fines, suspension or withdrawal of regulatory approvals for specific

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products, product recalls and seizures, operating restrictions and/or criminal prosecutions, any of which could have a material adverse effect on our business, reputation, financial condition and results of operations.
If physicians and patients do not accept our medicines, or if patients do not remain on treatment or comply with their prescribed dosing regimen, our product revenues would be materially harmed in future periods.
Our medicines may not gain or maintain market acceptance among physicians and patients. Effectively marketing our drugs and any of our drug candidates or investigational therapies, if approved, requires substantial efforts, both prior to launch and after approval. Physicians may elect not to prescribe our drugs or recommend our cell or genetic therapies, and patients may elect not to take them or receive them or they may discontinue use of our drugs after initiation of treatment, for a variety of reasons including:
•    prevalence and severity of adverse side effects;
•    lack of reimbursement availability from third-party payors, including governmental entities;
•    lower demonstrated efficacy, safety and/or tolerability compared to alternative treatment methods;
•    lack of cost-effectiveness;
•    a decision to wait for the approval of other therapies in development that have significant perceived advantages over our drug;
•    convenience and ease of administration;
•    other potential advantages of alternative treatment methods; and
•    inadequate sales, marketing and/or distribution support, including as a result of limitations or restrictions resulting from COVID-19.
If our medicines fail to achieve or maintain market acceptance, we may not be able to generate significant revenues in future periods.
Government and other third-party payors seek to contain costs of health care through legislative and other means. If they fail to provide coverage and adequate reimbursement rates for our products, our revenues will be harmed.
Sales of our products depend in part upon the availability of reimbursement from third-party payors. Third-party payors include government health programs such as Medicare and Medicaid in the U.S. and the national health care systems in ex-U.S. markets, managed care providers, private health insurers and other organizations. The trend in the health care industry is cost containment, and efforts of third-party payors to contain or reduce health care costs may adversely affect our ability to establish or maintain appropriate prices for our products or any drugs that we may develop and commercialize.
In most ex-U.S. markets, the pricing and reimbursement of therapeutic and other pharmaceutical products is subject to governmental control, and government authorities are making greater efforts to limit or regulate the price of drug products. In the U.S., there have been, and we expect that there will continue to be, a number of federal and state proposals to implement governmental controls that are similar to those that currently exist in Europe. For example, the ACA required manufacturers of Medicare Part D brand name drugs to provide discounts on those drugs to Medicare Part D beneficiaries during the coverage gap; increased the rebates paid by pharmaceutical companies to state Medicaid programs on drugs covered by Medicaid; and imposed an annual fee, which increases annually, on sales by branded pharmaceutical manufacturers.
There also has been an increase in legislation and regulations related to drug pricing and drug pricing transparency. In the U.S., various states, including Nevada, Maryland, Louisiana, New York, California, Washington, Massachusetts, Connecticut, Utah, Minnesota and Oregon, have passed legislation requiring companies to disclose extensive information relating to drug prices, drug price increases, and spending on research, development, and marketing. Although it is not clear what states will do with the collected information, some laws were designed to obtain additional product discounts. We may continue to see more state action requiring additional disclosures or other actions. In addition, we could see increased federal activity related to drug pricing and transparency requiring disclosures or other actions instead of, or in addition to, state requirements. Similar initiatives are also occurring in, or being considered by, some of the ex-U.S. markets, including Italy and Brazil.

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Complying with these laws is expensive and requires significant personnel and operational resources and deters focus on our business. Additionally, any additional required discounts would adversely affect the pricing of, and revenues from, our products. Finally, while we seek to comply with all statutory and regulatory requirements, we face increased enforcement activity by the U.S. federal government, state governments, and private payors against pharmaceutical and biotechnology companies for pricing and reimbursement-related issues.
Recently, there also has been rulemaking related to importation of prescription drugs from Canada as well as guidance related to importation of prescription drugs from other foreign countries. HHS also has issued a regulation seeking to establish a model for reference pricing of certain physician-administered drugs. While the recent regulation does not apply to our current medicines, it could affect future medicines. Additionally, in 2020, the Trump Administration issued several executive orders relating to drug pricing which were intended to broadly impact the pharmaceutical industry. Likewise, HHS recently issued a final regulation adopting changes to anti-kickback laws for rebates offered to pharmacy benefit managers. We expect such government scrutiny over drug pricing, reimbursement, and distribution to increase. Potential future government regulation of drug prices or reimbursement creates uncertainties about our portfolio and could have a material adverse effect on our operations.
Third-party payors throughout the world also have been attempting to control drug spending through various other actions, and this is expected to be an area of intensified focus for all payors in light of the global economic pressures, including due to the COVID-19 pandemic. In reimbursement negotiations, many payors are demanding price discounts and caps on total expenditures and limiting both the types and variety of drugs that they will cover if they are not able to secure them. As part of these negotiations, many ex-U.S. government payers also are requiring companies to establish product cost-effectiveness as a condition of reimbursement and companies’ data-backed explanations are assessed by government agencies set up for this purpose. These cost-effectiveness reviews may not account for many of the benefits provided by innovative medicines, and for the most part, have not taken into account the specific circumstances of products that treat rare diseases. This has led to conclusions that certain medicines, including our products in certain jurisdictions, are not cost-effective. As a result, certain countries have declined to reimburse, or delayed their reimbursement of, some of our products. Although not mandated in the U.S., various organizations have started advocating for cost-effectiveness analyses in the U.S. If U.S. payors were to adopt such assessments and make negative coverage determinations, it could adversely affect our product revenues. Our business would be materially adversely affected if we are not able to obtain or maintain coverage and reimbursement of our products from third-party payors on a broad, timely or satisfactory basis or if such coverage is subject to overly broad or restrictive utilization management controls.
The U.S. government, individual states and some foreign jurisdictions also have been aggressively pursuing legislative and regulatory reforms that could affect our ability to sell products. For example, in the U.S., there have been ongoing federal legislative and administrative efforts to repeal, substantially modify or invalidate some or all of the provisions of the ACA. Various portions of the ACA are subject to legal challenges in various jurisdictions, including the U.S. Supreme Court, which could affect coverage and payment for medicines. Other reforms include the Bipartisan Budget Act of 2018, which contained various provisions that affect coverage and reimbursement of drugs, including an increase in the discount that manufacturers of Medicare Part D brand name drugs must provide to Medicare Part D beneficiaries during the coverage gap from 50% to 70%. There are a number of additional bills pending in Congress that would affect drug pricing in the Medicare and Medicaid programs. Additional healthcare reform efforts have sought to address issues related to the COVID-19 pandemic, including an expansion of telehealth coverage under Medicare and accelerated or advanced Medicare payments to healthcare providers. Adoption of new healthcare reform legislation at the federal or state level could affect demand for, or pricing of, our products or product candidates if approved for sale. We cannot, however, predict the ultimate content, timing or effect of any healthcare reform legislation or action, or its impact on us, including increased compliance requirements and costs, all of which may adversely affect our future business, operations and financial results.
The increasing availability and use of innovative specialty pharmaceuticals for rare diseases, combined with their relative higher cost as compared to other types of pharmaceutical products, is generating significant third-party payor interest in developing cost-containment strategies targeted to this sector. Government regulations in both U.S. and ex-U.S. markets could further limit the prices that can be charged for our products and may limit our commercial opportunity. The increasing use of cost-effectiveness assessments in markets around the world and the financial challenges faced by many governments may lead to significant adverse effects on our business. Additionally, any legislation or regulatory changes or relaxation of laws that restrict imports of drugs from other countries, revisions to reimbursement or pharmaceuticals under government programs or general budget control actions also could reduce the net price we receive for our products.

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We have experienced challenges commercializing products outside of the U.S., and our future revenues will be dependent on our ability to obtain adequate reimbursement for our products.
In most ex-U.S. markets, the pricing and reimbursement of therapeutic and other pharmaceutical products is subject to governmental control. Given recent global economic pressures, including due to the COVID-19 pandemic, and geopolitical uncertainty, government authorities throughout the world are increasingly attempting to limit or regulate the price of drug products. The reimbursement process in ex-U.S. markets can take a significant time to conclude and reimbursement decisions are made on a country-by-country basis.
Our medicines treat life-threatening conditions and address relatively small patient populations, and our research and development programs are primarily focused on developing medicines to treat similar diseases. Particular attention is being paid by payors, including government and private payors, to these types of high-cost medicines, and countries are increasingly refusing to reimburse costly medicines. We have experienced challenges in obtaining timely reimbursement for our products in various countries outside the U.S. We continue to experience such challenges in some countries. For example, we obtained reimbursement for ORKAMBI and SYMKEVI in England in the fourth quarter of 2019, four years after ORKAMBI’s initial approval in 2015. Our future product revenues, including from TRIKAFTA/KAFTRIO, depend on, among other things, our ability to complete reimbursement discussions in ex-U.S. markets for our products. There is no assurance that coverage and reimbursement will be available outside of the U.S. for our four approved medicines or any future medicine, and, even if it is available, whether the timing or the level of reimbursement will be sufficient to allow us to market our medicines. Adverse pricing limitations or a delay in obtaining coverage and reimbursement would decrease our future net product revenues and harm our business.
We have limited experience developing cell and genetic therapies and could experience challenges with these programs, which could result in delays or prevent the development, manufacturing and commercialization of our cell and genetic therapies.
We are investing significant resources in the research, development and manufacturing of cell and genetic therapies. While we have previously successfully developed, manufactured and commercialized several small molecule drugs, we have limited experience with the development, manufacture and commercialization of cell and genetic therapies. Development, manufacturing and commercialization of cell and genetic therapies are subject to the same risks and uncertainties as development, manufacturing and commercializing small molecules. In addition:
the manufacturing processes for cell and genetic therapies are different and more complex than the manufacturing processes required for small molecule drugs, and require different systems, equipment, facilities and expertise to develop and maintain;
we may encounter difficulties in the production of our cell and genetic therapies and ensuring that the product meets required specifications;
there have been a limited number of regulatory approvals for genetic therapies to date, the regulatory requirements governing genetic therapies continue to evolve, and regulatory positions and interpretations can change or lead to delays or significant unexpected costs with respect to our genetic therapy programs;
the commercial success of cell or genetic therapies, including CTX001, if approved, will depend in part on the medical community, patients, and third-party or governmental payers accepting cell or genetic therapy products in general, and the applicable medicine as medically useful, cost-effective, and safe; and
market acceptance will be dependent in part on the prevalence and severity of side effects associated with the procedure by which the cell or genetic therapy is administered, including, with respect to CTX001, if approved, the prevalence and severity of any side effects resulting from the myeloablative preconditioning regimen.
For programs addressing rare genetic diseases with small patient populations, we may not be able to identify, recruit and enroll a sufficient number of patients, or those with required or desired characteristics, to complete our clinical studies in an adequate and timely manner. Additionally, patients may be unwilling to participate in our clinical trials because of concerns that cell and genetic therapies are unsafe or unethical, negative publicity from adverse events in the biotechnology or gene therapy industries or for other reasons, including competitive clinical studies for similar patient populations.

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In order to develop and commercialize any future cell or genetic therapies, we will need to incur substantial expenditures to develop, contract for, or otherwise arrange for the necessary manufacturing capabilities. Additionally, the manufacture of cell and genetic therapies requires significant expertise. Even with the relevant experience and expertise, manufacturers of cell and genetic therapy products often encounter difficulties in production, including difficulties with production costs and yields, quality control, and compliance with federal, state and foreign regulations. We cannot make any assurances that these problems will not occur, or that we will be able to resolve or address problems that occur in a timely manner, or at all.
To the extent we develop capabilities internally, there are many risks that could result in delays and additional costs, including the need to hire and train qualified employees and obtain access to necessary equipment and third-party technology. To the extent we partner with third parties to manufacture our cell or genetic therapies, any complexity in the manufacture of our products and product candidates may require lengthy technology transfers.
There also is significant uncertainty related to the insurance coverage and reimbursement of cell or genetic therapy products, including gene therapies that are potential one-time treatments. It is difficult to predict what third party payors, including U.S. or ex-U.S. governments or private insurance companies, will decide with respect to reimbursement for novel cell and genetic therapies like the ones in our pipeline. Additionally, reimbursement rates for cell and genetic therapies approved before ours could create an adverse environment for reimbursement of any therapies we ultimately commercialize. The administration of our products may require procedures for the collection of cells from patients, followed by other procedures either before or after delivery of the cell or genetic therapy. The manner and level at which reimbursement is provided for these services also is important. An inadequate reimbursement for such services may adversely affect physician decision to recommend any product for which we obtain approval in the future and our ability to market or sell them.
Given there are only a few approved cell and genetic therapy products, it also is difficult to determine how long it will take or reasonably estimate the costs to develop, manufacture and commercialize cell or genetic therapies. In addition, our cell-based therapies include approaches involving devices, which are subject to additional regulatory requirements. If we are unable to successfully develop, manufacture or commercialize such therapies on a timely or profitable basis, or at all, we may not realize benefits or generate cash flows based on our investments in these programs and our business, financial condition, results of operations and our stock price would likely be adversely affected.
We are dependent upon a small number of customers for a significant portion of our revenue, and the loss of, or significant reduction in sales to, these customers would adversely affect our results of operations.
In the U.S., we sell our products principally to a limited number of specialty pharmacy and specialty distributors, which subsequently resell our products to patients and health care providers. Internationally, we sell our products primarily to a limited number of specialty distributors and retail chains, as well as hospitals and clinics. We expect this significant customer concentration to continue for the foreseeable future. Our ability to generate and grow sales of our CF medicines will depend significantly on the extent to which these specialty distributors and specialty pharmacies are able to provide adequate distribution of our products to patients and healthcare providers. The loss of any large customer, a significant reduction in sales we make to them, any cancellation of orders they have made with us, or any failure to pay for the products we have shipped to them could adversely affect our business, financial condition and results of operations.
Risks Related to Development and Clinical Testing of Our Products and Drug Candidates
Our drug candidates remain subject to clinical testing and regulatory approval. Our future success is dependent on our ability to successfully develop additional drug candidates for both CF and non-CF indications.
Our business depends upon the successful development and commercialization of drug candidates. These drug candidates are in various stages of development and must satisfy rigorous standards of safety and efficacy before they can be approved for sale by the FDA or comparable foreign regulatory authorities. To satisfy these standards, we must allocate resources among our various development programs and must engage in expensive and lengthy testing of our drug candidates. Discovery and development efforts for new pharmaceutical products, including new combination therapies, are resource-intensive and may take 10 to 15 years or longer for each drug candidate. Despite our efforts, our drug candidates may not:
•    offer therapeutic or other improvement over existing competitive therapies;
•    show the level of safety and efficacy, including the level of statistical significance, required by the FDA or other regulatory authorities for approval of a drug candidate;

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•    meet applicable regulatory standards;
•    be capable of being produced in commercial quantities at acceptable costs; or
•    if approved for commercial sale, be successfully marketed as pharmaceutical products.
We have recently completed and/or have ongoing or planned clinical trials for several of our drug candidates. The strength of our product portfolio and pipeline will depend in large part upon the outcomes of these clinical trials, including clinical trials evaluating our triple combination therapy in younger children with CF and our clinical trials of potential medicines to treat other diseases. Results of our clinical trials and findings from our nonclinical studies, including toxicology findings in nonclinical studies conducted concurrently with clinical trials, could lead to abrupt changes in our development activities, including the possible cessation of development activities associated with a particular drug candidate or program. For example, in October 2020, we discontinued development of VX-814, a drug candidate for the treatment of AAT, based on the safety and pharmacokinetic profile observed in the clinical trial.
Moreover, clinical data are often susceptible to varying interpretations, and many companies that have believed their drug candidates performed satisfactorily in clinical trials have nonetheless failed to obtain marketing approval of their drug candidate. Furthermore, results from our clinical trials may not meet the level of statistical significance or otherwise provide the level of evidence or safety and efficacy required by the FDA or other regulatory authorities for approval of a drug candidate. Finally, clinical trials are expensive and require significant operational resources to implement and maintain.
Many companies in the pharmaceutical and biotechnology industries, including our company, have suffered significant setbacks in later-stage clinical trials even after achieving promising results in earlier-stage clinical trials. For example, the results from completed preclinical studies and clinical trials may not be replicated in later clinical trials, and ongoing clinical trials for our drug candidates may not be predictive of the results we may obtain in later-stage clinical trials or of the likelihood of approval of a drug candidate for commercial sale. In addition, from time to time, we report interim data from our clinical trials. Interim data from a clinical trial may not be predictive of final results from the clinical trial. Failure to advance drug candidates through clinical development could impair our ability to ultimately commercialize products, which could materially harm our business and long-term prospects.
If we are unable to obtain regulatory approval, we will be unable to commercialize our drug candidates.
The time required to complete clinical trials and to satisfy the FDA and other countries’ regulatory review processes is uncertain and typically takes many years. Our analysis of data obtained from nonclinical and clinical activities is subject to confirmation and interpretation by regulatory authorities, which could delay, limit or prevent regulatory approval. We also may encounter unanticipated delays or increased costs due to government regulation from future legislation or administrative action or changes in governmental policy during the period of drug development, clinical trials and governmental regulatory review.
We may seek a Fast Track, Priority Review, Breakthrough Therapy, and/or RMAT designation for some of our drug candidates. Drug candidates that receive one or more of these designations may be eligible for, among other things, a priority regulatory review. Each of these designations is within the discretion of the FDA. Accordingly, even if we believe one of our drug candidates meets the criteria for Fast Track, Priority Review, Breakthrough Therapy and/or RMAT designation, the FDA may disagree and instead determine not to make such designation. The receipt of one or more of these designations for a drug candidate does not guarantee a faster development process, review or approval compared to drugs developed or considered for approval under conventional FDA procedures and does not assure ultimate approval by the FDA. In addition, even if one or more of our drugs or drug candidates qualifies for Fast Track, Priority Review, Breakthrough Therapy and/or RMAT designation, the FDA may later decide to withdraw such designation if it determines that the drug or drug candidate no longer meets the conditions for qualification.
Any failure to obtain regulatory approvals for a drug candidate would prevent us from commercializing that drug candidate. Any delay in obtaining required regulatory approvals could materially adversely affect our ability to successfully commercialize a drug candidate. Furthermore, any regulatory approval to market a drug may be subject to limitations that we do not expect on the indicated uses for which we may market the drug. Any such limitations could reduce the size or demand of the market for the drug.
We also are subject to numerous foreign regulatory requirements governing the conduct of clinical trials, manufacturing and marketing authorization, pricing and third-party reimbursement. Non-U.S. jurisdictions have different approval

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procedures than those required by the FDA, and these jurisdictions may impose additional testing requirements for our drug candidates. The foreign regulatory approval process includes all of the risks associated with the FDA approval process described above, as well as risks attributable to the satisfaction of foreign requirements. Approval by the FDA does not ensure approval by regulatory authorities outside the U.S. and approval by a foreign regulatory authority does not ensure approval by the FDA. In addition, although the FDA may accept data from clinical trials conducted outside the U.S., acceptance of this data is subject to conditions imposed by the FDA. For example, the clinical trial must be well designed and conducted and performed by qualified investigators in accordance with ethical principles. The trial population also must adequately represent the U.S. population, and the data must be applicable to the U.S. population and U.S. medical practice in ways that the FDA deems clinically meaningful. In addition, while these clinical trials are subject to applicable local laws, FDA acceptance of the data will depend on its determination that the trials also complied with all applicable U.S. laws and regulations. If the FDA does not accept the data from any trial that we conduct outside the U.S., it would likely result in the need for additional trials, which would be costly and time-consuming and delay or permanently halt our development of the applicable drug candidate.
If clinical trials are prolonged or delayed, our development timelines for the affected development program could be extended, our costs to develop the drug candidate could increase and the competitive position of the drug candidate could be adversely affected.
We cannot predict whether or not we will encounter problems with any of our completed, ongoing or planned clinical trials that will cause us or regulatory authorities to delay or suspend clinical trials, or delay the analysis of data from our completed or ongoing clinical trials. Among the factors that could delay our development programs are:
•    ongoing discussions with the FDA or comparable foreign authorities regarding the scope or design of our clinical trials and the number of clinical trials we must conduct;
•    delays in enrolling volunteers or patients into clinical trials, including as a result of low numbers of patients that meet the eligibility criteria for the trial;
•    a lower than anticipated retention rate of volunteers or patients in clinical trials;
•    the need to repeat clinical trials as a result of inconclusive results, unforeseen complications in testing or clinical investigator error;
•    inadequate supply or deficient quality of drug candidate materials or other materials necessary for the conduct of our clinical trials;
•    unfavorable FDA or foreign regulatory authority inspection and review of a manufacturing facility that supplied clinical trial materials or its relevant manufacturing records or a clinical trial site or records of any clinical or preclinical investigation;
•    unfavorable scientific results from clinical trials;
•    serious and unexpected drug-related side-effects experienced by participants in our clinical trials or by participants in clinical trials being conducted by our competitors to evaluate drug candidates with similar mechanisms of action or structures to therapies that we are developing;
•    favorable results in testing of our competitors’ drug candidates, or FDA or foreign regulatory authority approval of our competitors’ drug candidates; or
•    action by the FDA or a foreign regulatory authority to place a clinical hold or partial clinical hold on a trial or compound or deeming the clinical trial conduct as problematic.
Our ability to enroll patients in our clinical trials in sufficient numbers and on a timely basis is subject to a number of factors, including the size of the patient population, the nature of the protocol, the proximity of patients to clinical sites, the availability of effective treatments for the relevant disease, the number of other clinical trials ongoing and competing for patients in the same indication, the eligibility criteria for the clinical trial, and the ongoing COVID-19 pandemic. In addition, patients may drop out of our clinical trials or may be lost to follow-up medical evaluation after treatment ends, and this could impair the validity or statistical significance of the trials. Clinical trials are expensive and require significant operational

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resources. Delays in patient enrollment or unforeseen drop-out rates may result in increased costs and longer development times.
We, our collaborators, the FDA or other applicable regulatory authorities may suspend clinical trials of a drug candidate at any time if we or they believe the healthy volunteers or patients participating in such clinical trials are being exposed to unacceptable health risks or for other reasons. Any such suspension could materially adversely affect the development of a particular drug candidate and our business.
Risks Related to Government Regulation
If regulatory authorities interpret any of our conduct, including our marketing practices, as being in violation of applicable health care laws, including fraud and abuse laws, laws prohibiting off-label promotion, disclosure laws or other similar laws, we may be subject to civil or criminal penalties.
We are subject to health care fraud and abuse laws, such as the federal False Claims Act and anti-kickback laws, which prohibit off-label product promotion and other similar laws and regulations both in the U.S. and in non-U.S. markets.
The federal anti-kickback law prohibits knowingly and willfully offering, paying, soliciting, receiving or providing remuneration, directly or indirectly, in exchange for or to induce either the referral of an individual, or the ordering, furnishing, arranging for or recommending of an item or service that is reimbursable, in whole or in part, by a federal health care program, such as Medicare or Medicaid. Because of the broad scope of the prohibition, most financial interactions between pharmaceutical manufacturers and prescribers, purchasers, third party payors and patients would be subject to the statute. Although there are a number of statutory exceptions and regulatory safe harbors protecting certain common activities from prosecution, the exceptions and safe harbors are narrow. Financial interactions must therefore be structured carefully to qualify for protection or otherwise withstand scrutiny.
Federal false claims laws prohibit any person from knowingly presenting, or causing to be presented, a false claim for payment to the federal government, or knowingly making, or causing to be made, a false statement to get a false claim paid. Pharmaceutical companies have been prosecuted under these laws for a variety of alleged promotional and marketing activities, such as providing free product to customers with the expectation that the customers would bill federal programs for the product; reporting to pricing services inflated average wholesale prices that were then used by federal programs to set reimbursement rates; engaging in promotion for uses that the FDA has not approved, known as “off-label” uses, that caused claims to be submitted to Medicaid for those off-label uses; submitting inflated “best price” information to the Medicaid Rebate Program; and certain manufacturing-related violations. The scope of this and other laws may expand in ways that make compliance more difficult and expensive.
Although physicians are permitted, based on their medical judgment, to prescribe products for indications other than those approved by the FDA, manufacturers are prohibited from promoting their products for such off-label uses. We market our products to eligible people with CF for whom the applicable product has been approved and provide promotional materials and training programs to physicians regarding the use of each product in these patient populations. These eligible people do not represent all people with CF. If the FDA determines that our promotional materials, training or other activities constitute off-label promotion, it could request that we modify our training or promotional materials or other activities, conduct corrective advertising or subject us to regulatory enforcement actions, including the issuance of a warning letter, injunction, seizure, civil fine and criminal penalties. It also is possible that other federal, state or foreign enforcement authorities might take action if they believe that the alleged improper promotion led to the submission and payment of claims for an off-label use, which could result in significant fines or penalties under other statutory authorities, such as laws prohibiting false claims for reimbursement. Even if it is later determined we were not in violation of these laws, we may be faced with negative publicity, incur significant expenses defending our actions and have to divert significant management resources from other matters.
In the U.S., federal and state laws regulate financial interactions between pharmaceutical manufacturers and healthcare providers, require disclosure to government authorities and the public of such interactions, and mandate the adoption of compliance standards or programs. For example, the so-called federal “sunshine law” requires pharmaceutical manufacturers to report annually to the Centers for Medicare & Medicaid Services, or CMS, payments or other transfers of value made by that entity to physicians and teaching hospitals (and additional categories of health care practitioners beginning with reports submitted on or after January 1, 2022). We also have similar reporting obligations with respect to financial interactions throughout the E.U. We expended significant efforts to establish, and are continuing to devote significant resources to

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maintain and enhance, systems and processes in order to comply with these regulations. Requirements to track and disclose financial interactions with health care providers and organizations increase government and public scrutiny of these financial interactions. Failure to comply with the reporting requirements could result in significant civil monetary penalties.
The sales and marketing practices of our industry have been the subject of increased scrutiny from government authorities in the U.S. and other countries in which we market our products, and we believe that this trend will continue. Many of these laws have not been fully interpreted by the government authorities or the courts, and their provisions are subject to a variety of interpretations. While we have a corporate compliance program which, together with our policies and procedures, is designed to actively identify, prevent and mitigate risk through the implementation of compliance policies and systems and the promotion of a culture of compliance, if we are found not to be in full compliance with these laws and regulations, our business could be materially harmed. We may be subject to penalties, including civil and criminal penalties, damages, fines, exclusion from federal health care programs and/or the curtailment or restructuring of our operations. Even if we successfully defend against government challenge, responding to the challenge may cause us to incur significant legal expenses and divert our management’s attention from the operation of our business.
If we fail to comply with our reporting and payment obligations under the Medicaid Drug Rebate Program or other governmental pricing programs in the U.S., we could be subject to additional reimbursement requirements, penalties, sanctions and fines which could have a material adverse effect on our business, financial condition, results of operations and growth prospects.
We participate in the Medicaid Drug Rebate Program, the 340B Drug Pricing Program, and a number of other federal and state government pricing programs in the U.S. in order to obtain coverage for our products by certain government health care programs. These programs would generally require us to pay rebates or provide discounts to certain private purchasers or government payers in connection with our products when dispensed to beneficiaries of these programs. In some cases, such as with the Medicaid Drug Rebate Program, the rebates are based on pricing and rebate calculations that we report on a monthly and quarterly basis to the government agencies that administer the programs. The terms, scope and complexity of these government pricing programs change frequently. We may also have reimbursement obligations or be subject to penalties if we fail to provide timely and accurate information to the government, pay the correct rebates or offer the correct discounted pricing. Changes to the price reporting or rebate requirements of these programs would affect our obligations to pay rebates or offer discounts. CMS recently proposed changes to the Medicaid Drug Rebate calculations to address treatment of value-based arrangements, accumulator adjustment programs implemented by payers, and new formulations of existing products. Responding to current and future changes to these and other Medicaid Rebate requirements may increase our costs and the complexity of compliance, will be time-consuming, and could have a material adverse effect on our results of operations.
If our processes and systems are not compliant with regulatory requirements, we could be subject to restrictions on marketing our products or could be delayed in submitting regulatory filings seeking approvals for our drug candidates.
We have a number of regulated processes and systems that are required both prior to and following approval of our drugs and drug candidates. These processes and systems are subject to continual review and periodic inspection by the FDA and other regulatory bodies. In addition, the clinical research organizations and other third parties that we work with in our non-clinical studies and clinical trials and our oversight of such parties are subject to similar reviews and periodic inspection by the FDA and other regulatory bodies. If compliance issues are identified at any point in the development and approval process, we may experience delays in filing for regulatory approval for our drug candidates, or delays in obtaining regulatory approval after filing, if at all. Any later discovery of previously unknown problems or safety issues with approved drugs or manufacturing processes, or failure to comply with regulatory requirements, may result in restrictions on such drugs or manufacturing processes, withdrawal of drugs from the market, the imposition of civil or criminal penalties or a refusal by the FDA and/or other regulatory bodies to approve pending applications for marketing approval of new drugs or supplements to approved applications, any of which could have a material adverse effect on our business. In addition, we are party to agreements that transfer responsibility for complying with specified regulatory requirements, such as filing and maintenance of marketing authorizations and safety reporting or compliance with manufacturing requirements, to our collaborators and third-party manufacturers. If our collaborators or third-party manufacturers do not fulfill these regulatory obligations, any drugs for which we or they obtain approval may be subject to later restrictions on manufacturing or sale, which could have a material adverse effect on our business.

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We are subject to various and evolving laws and regulations governing the privacy and security of personal data, and our failure to comply could adversely affect our business, result in fines and/or criminal penalties, and damage our reputation.
We are subject to data privacy and security laws and regulations in various jurisdictions that apply to the collection, storage, use, sharing and security of personal data, including health information, and impose significant compliance obligations. In addition, numerous other federal and state laws, including state security breach notification laws, state health information privacy laws and federal and state consumer protection laws, govern the collection, use, disclosure and security of personal information. The legislative and regulatory landscape for privacy and data protection continues to evolve, and there has been an increasing focus on privacy and data protection issues with the potential to affect our business.
For example, the E.U. General Data Protection Regulation, or GDPR, went into effect in 2018 and has imposed new obligations on us with respect to our processing of personal data and the cross-border transfer of such data, including higher standards of obtaining consent, more robust transparency requirements, data breach notification requirements, requirements for contractual language with our data processors, and stronger individual data rights. Different E.U. member states have interpreted the GDPR differently and many have imposed additional requirements, which add to the complexity of processing personal data in the E.U. The GDPR also imposes strict rules on the transfer of personal data to countries outside the E.U., including the U.S., and permits data protection authorities to impose large penalties for violations of the GDPR. Compliance with the GDPR is a rigorous and time-intensive process that may increase our cost of doing business or require us to change our business practices, and despite those efforts, there is a risk that we may be subject to fines and penalties, litigation, and reputational harm in connection with any activities falling within the scope of the GDPR.
In the U.S., California has passed the California Consumer Privacy Act, which went into effect on January 1, 2020, and several states and the federal government are actively considering proposed legislation governing the protection of personal data. Additionally, Brazil passed the General Data Protection Law, or LGPD, which went into effect in August 2020. While we continue to address the implications of the new data privacy regulations, data privacy remains an evolving landscape at both the domestic and international level, with new regulations coming into effect and continued legal challenges. Each law is also subject to various interpretations by courts and regulatory agencies, creating even more uncertainty. While we have a global privacy program that addresses such laws and regulations, our efforts to comply with the evolving data protection rules may be unsuccessful.
We must devote significant resources to understanding and complying with the changing landscape in this area. Failure to comply with data protection laws may expose us to risk of enforcement actions taken by data protection authorities, private rights of action in some jurisdictions, and potential significant penalties if we are found to be non-compliant. Failure to comply with the GDPR and applicable national data protection laws of European Economic Area member states could lead to fines of up to €20,000,000 or up to 4% of the total worldwide annual revenue of the preceding financial year, whichever is higher. Some of these laws and regulations also carry the possibility of criminal sanctions. For example, while we are not directly subject to the Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information Technology for Economic and Clinical Health Act, or HIPAA, we could be subject to penalties, including criminal penalties if we knowingly obtain or disclose individually identifiable health information from a HIPAA-covered health care provider or research institution that has not complied with HIPAA’s requirements for disclosing such information. Furthermore, the number of government investigations related to data security incidents and privacy violations continue to increase and government investigations typically require significant resources and generate negative publicity, which could harm our business and our reputation.
The COVID-19 pandemic has added further complexity to the processing of personal data. For example, safety measures intended to protect our employees, contractors, and other visitors to our sites may require the collection of certain personal data. Although we are focused on ensuring that personal data is properly protected, our efforts may be unsuccessful and we could unintentionally be subject to unauthorized access or disclosure of such personal data.
Clinical Trial Regulation (EU) No. 536/2014, or the Clinical Trial Regulation, and the EMA policy on publication of clinical data for medicinal products for human use both permit the EMA to publish clinical information submitted in MAAs. This provision of the Clinical Trial Regulation is expected to be effective by the end of 2021. The ability of third parties to review and/or analyze data from our clinical trials may increase the risk of commercial confidentiality breaches and result in enhanced scrutiny of our clinical trial results. Such scrutiny could result in public misconceptions regarding our drugs and drug candidates. These publications could also result in the disclosure of information to our competitors that we might otherwise deem confidential, which could harm our business.

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If we do not comply with laws regulating the protection of the environment and health and human safety, our business could be adversely affected.
Our research and development efforts involve the regulated use of hazardous materials, chemicals and various controlled and radioactive compounds. Although we believe that our safety procedures for handling and disposing of these materials comply with the standards prescribed by state, federal and foreign regulations, the risk of loss of, or accidental contamination or injury from, these materials cannot be eliminated. If an accident occurs, we could be held liable for resulting damages, which could be substantial. We also are subject to numerous environmental, health and workplace safety laws and regulations, including those governing laboratory procedures, exposure to blood-borne pathogens and the handling of biohazardous materials. Although we maintain workers’ compensation insurance to cover us for costs we may incur due to injuries to our employees resulting from the use of these materials, this insurance may not provide adequate coverage against potential liabilities. We maintain insurance to cover pollution conditions or other extraordinary or unanticipated events relating to our use and disposal of hazardous materials that we believe is appropriate based on the small amount of hazardous materials we generate. Additional federal, state and local laws and regulations affecting our operations may be adopted in the future. We may incur substantial costs to comply with, and substantial fines or penalties if we violate, any of these laws or regulations.
Risks Related to Business Development Activities
Our ability to execute on our long-term strategy depends in part on our ability to engage in transactions and collaborations with other entities that add to our pipeline or provide us with new commercial opportunities.
In order to achieve our long-term business objectives, we seek to license or acquire drugs, drug candidates and other technologies that have the potential to complement our ongoing research and development efforts, access emerging technologies and license or acquire pipeline assets. These transactions may be similar to prior transactions or may involve larger transactions or later-stage assets. We have faced and will continue to face significant competition for the acquisition of rights to these types of drugs, drug candidates and other technologies from a variety of other companies, many of which have significantly more financial resources and experience in business development activities than we have. In addition, non-profit organizations may be willing to provide capital to the companies that control additional drugs, drug candidates or technologies, which may provide incentives for companies to advance these drugs, drug candidates or technologies independently. Also, the cost of acquiring, in-licensing or otherwise obtaining rights to such drugs, drug candidates or other technologies has grown dramatically in recent years and may be at levels that we cannot afford or that we believe are not justified by market potential. As a result, we may not be able to acquire, in-license or otherwise obtain rights to additional drugs, drug candidates or other technologies on acceptable terms or at all.
We may not realize the anticipated benefits of acquisitions of businesses or technologies, and the integration following any such acquisition may disrupt our business and management.
It is challenging to effectively integrate businesses and technologies that we acquire, including the acquisitions of Semma and Exonics and the exclusive licenses that we have acquired from CRISPR and Moderna, and we may not realize the benefits anticipated from such transactions. Achieving the anticipated benefits of any transaction and successfully integrating acquired businesses or technologies involves a number of risks, including:
•    failure to successfully develop and commercialize the acquired drugs, drug candidates or technologies or to achieve other strategic objectives;
•    delays or inability to progress preclinical programs into clinical development or unfavorable data from clinical trials evaluating the acquired or licensed drug or drug candidates;
•    difficulty in integrating the drugs, drug candidates, technologies, business operations and personnel of an acquired asset or company;
•    disruption of our ongoing business and distraction of our management and employees from daily operations or other opportunities and challenges;
the potential loss of key employees of an acquired company;

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•    entry into markets in which we have no or limited direct prior experience or where competitors in such markets have stronger market positions;
•    potential failure of the due diligence processes to identify significant problems, liabilities or challenges of an acquired company, or acquired or licensed drug, drug candidate or technology, including but not limited to, problems, liabilities or challenges with respect to intellectual property, clinical or non-clinical data, safety, accounting practices, employee, or third-party relations and other known and unknown liabilities;
•    liability for activities of the acquired company or licensor before the acquisition or license, including intellectual property infringement claims, violations of laws, commercial disputes, tax liabilities, and other known and unknown liabilities;
•    exposure to litigation or other claims in connection with, or inheritance of claims or litigation risk as a result of an acquisition or license, including but not limited to, claims from terminated employees, customers, former equity holders or other third parties; and
•    difficulties in the integration of the acquired company’s departments, systems, including accounting, human resource and other administrative systems, technologies, books and records, and procedures, as well as in maintaining uniform standards, controls, including internal control over financial reporting required by the Sarbanes-Oxley Act of 2002 and related procedures and policies.
Acquisitions, licensing arrangements and other strategic transactions are inherently risky, and ultimately, if we do not complete an announced acquisition, collaboration or strategic transaction or integrate an acquired or licensed asset, business or technology successfully and in a timely manner, we may not realize the anticipated benefits of the strategic transaction.
We may later incur impairment charges related to assets acquired in any such transaction. For example, we entered into a strategic collaboration and license agreement with Parion Sciences, Inc. to develop ENaC inhibitors in 2015 and incurred an impairment charge related to this collaboration in 2017. Even if we achieve the long-term benefits associated with our strategic transactions, our expenses and short-term costs may increase materially and adversely affect our liquidity and short-term net income. Future strategic transactions could result in potentially dilutive issuances of equity securities, the incurrence of debt, the creation of contingent liabilities, impairment expenses related to goodwill, or impairment or amortization expenses related to other intangible assets, all of which could harm our financial condition.
We face risks in connection with existing and future collaborations with respect to the development, manufacture and commercialization of our products and drug candidates.
The risks that we face in connection with our current collaborations, including CRISPR, and any future collaborations, include the following:
•    Our collaborators may change the focus of their development and commercialization efforts or may have insufficient resources or expertise to effectively develop, manufacture or commercialize our drug candidates.
The ability of some of our therapies to reach their potential could be limited if collaborators are unable to effectively develop, manufacture or commercialize these therapies or drug candidates or decrease or fail to increase development or commercialization efforts related to those therapies or drug candidates. Our collaboration agreements allocate development, manufacturing and commercialization responsibilities between us and our collaborators and provide our collaborators with a level of discretion in determining the amount and timing of efforts and resources that they will apply to these collaborations.
Our collaborators may have limited experience in developing, manufacturing and commercializing therapies, either generally, or in the specific therapeutic area. For example, CRISPR, which is responsible for leading commercialization of CTX001 in the U.S., has no prior experience commercializing a therapy and is in the process of establishing the capabilities that would be required to commercialize CTX001 in the U.S.
•    Collaboration agreements may have the effect of limiting the areas of research and development that we may pursue, either alone or in collaboration with third parties.

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•    Collaborators may develop and commercialize, either alone or with others, drugs that are similar to or competitive with the drugs or drug candidates that are the subject of their collaborations with us.
•    Disagreements with collaborators, including disagreements over proprietary rights, contract interpretation or the preferred course of development, might cause delays or termination of the research, development or commercialization of drug candidates, might lead to additional responsibilities or costs for us with respect to drug candidates, or might result in litigation or arbitration. Any such disagreements would divert management attention and resources and would be time-consuming and expensive.
•    Collaborators may not properly maintain or defend our intellectual property rights or may use our proprietary information in such a way as to invite litigation that could jeopardize or invalidate our intellectual property or proprietary information or expose us to potential litigation.
•    Collaborators may infringe the intellectual property rights of third parties, which may expose us to litigation and potential liability.
•    Investigations and/or compliance or enforcement actions against a collaborator, which may expose us to indirect liability as a result of our partnership with such collaborator.
•    Our collaboration agreements are subject to termination under various circumstances.
Additionally, if a collaborator were to be involved in a business combination with a third party, it might de-emphasize or terminate the development or commercialization of any drug candidate licensed to it by us. If one of our collaborators terminates its agreement with us, we may find it more difficult to attract new collaborators and our perception in the business and financial communities could be harmed.
We may not be able to attract collaborators or external funding for the development and commercialization of certain of our drug candidates.
As part of our ongoing strategy, we may seek additional collaborative arrangements or external funding for certain of our development programs and/or seek to expand existing collaborations to cover additional commercialization and/or development activities. We have a number of research programs and clinical development programs, some of which are being developed in collaboration with a third party. For example, we are co-developing CTX001, an investigational CRISPR/Cas9-based gene-editing therapy for SCD and TDT with our collaborator, CRISPR. At any time, we may determine that in order to continue development of a drug candidate or program or successfully commercialize a drug we need to identify a collaborator or amend or expand an existing collaboration. Whether we reach a definitive agreement for a collaboration will depend, among other things, upon our assessment of the collaborator’s resources and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator’s evaluation of a number of factors. Those factors may include the design or results of clinical trials, the likelihood of approval by the FDA, EMA or other regulatory authorities, the potential market for the subject drug candidate, the costs and complexities of manufacturing and delivering such drug candidate to patients, the potential of competing products, the existence of uncertainty with respect to our ownership of the applicable intellectual property, which can exist if there is a challenge to such ownership without regard to the merits of the challenge, and industry and market conditions generally. Potentially, and depending on the circumstances, we may desire that a collaborator either agree to fund portions of a drug development program led by us, or agree to provide all of the funding and directly lead the development and commercialization of a program. No assurance can be given that any efforts we make to seek additional collaborative arrangements will be successfully completed on a timely basis or at all. If we elect to fund and undertake development or commercialization activities on our own, we may need to obtain additional expertise and additional capital, which may not be available to us on acceptable terms or at all. If we are unable to enter into acceptable collaborative relationships, one or more of our development programs could be delayed or terminated and the possibility of our receiving a return on our investment in the program could be impaired.

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Risks Related to Third-Party Manufacturing and Reliance on Third Parties
We depend on third-party manufacturers to manufacture our products and the materials we require for our clinical trials. We may not be able to maintain these relationships and could experience supply disruptions outside of our control.
We rely on a worldwide network of third-party manufacturers to manufacture our drugs for commercial use and our drug candidates for clinical trials. As a result of our reliance on these third-party manufacturers and suppliers, we could be subject to significant supply disruptions outside of our control. Our supply chain for sourcing raw materials and manufacturing drug product ready for distribution is a multi-step international endeavor. Third-party contract manufacturers, including some in China, perform different parts of our manufacturing process. Contract manufacturers may supply us with raw materials, convert these raw materials into drug substance and/or convert the drug substance into final dosage form. Third parties are used for packaging, warehousing and distribution of products. In cell and genetic therapies, third parties also will be used to both manufacture and deliver our therapies, which requires significant expertise.
Establishing, managing and expanding this global supply chain requires a significant financial commitment and the creation and maintenance of numerous third-party contractual relationships. Although we attempt to manage the business relationships with companies in our supply chain, we could be subject to supply disruptions outside of our control. For example, we are collaborating with CRISPR on establishing the supply chain to support clinical trials and commercial supply for CTX001, if approved. As a result, we do not have independent control over the related supply operations and are reliant on CRISPR to adequately establish the corresponding supply chains.
Supply disruptions may result from a number of factors, including shortages in product raw materials, labor or technical difficulties, regulatory inspections or restrictions, shipping or customs delays or any other performance failure by any third-party manufacturer on which we rely. Any supply disruptions could disrupt sales of our products and/or the timing of our clinical trials.
We require a supply for our medicines for commercial sale and a supply of our drug candidates for use in our clinical trials. While we have developed some internal capabilities, a majority of the manufacturing steps needed to produce our drug candidates and drug products are performed through a third-party manufacturing network. To ensure the stability of our supply chains, we aim to develop additional sources of manufacture for all steps of our manufacturing processes at the time of, or shortly after, marketing approval. Therefore, at any point in time, we may have a limited number of single source manufacturers for certain steps in our manufacturing processes, particularly for recently launched products.
If we or our third-party manufacturers become unable or unwilling to continue manufacturing product and we are not able to promptly identify another manufacturer, we could experience a disruption in the commercial supply of our then-marketed medicines, which would have a significant effect on patients, our business and our product revenues. Similarly, a disruption in the clinical supply of drug products could delay the completion of clinical trials and affect timelines for regulatory filings. There can be no assurance that we will be able to establish and maintain additional manufacturers for all of our drug candidates and drug products on a timely basis or at all.
In the course of providing its services, a contract manufacturer may develop process technology related to the manufacture of our products or drug candidates that the manufacturer owns, either independently or jointly with us. This would increase our reliance on that manufacturer or require us to obtain a license from that manufacturer in order to have our products or drug candidates manufactured by other suppliers utilizing the same process.
We rely on third parties to conduct pre-clinical work, clinical trials and other activities, and those third parties may not perform satisfactorily, including failing to meet established deadlines for the completion of such studies and/or trials or failing to satisfy regulatory requirements.
We rely on third parties such as contract research organizations to help manage certain pre-clinical work and our clinical trials and on medical institutions, clinical investigators and clinical research organizations such as the Therapeutic Development Network, which is primarily funded by the CFF, to assist in the design and review of, and to conduct our clinical trials, including enrolling qualified patients. In addition, we engage third party contractors to support numerous other research, commercial and administrative activities. Our reliance on these third parties for clinical development activities reduces our control over these activities but does not relieve us of our responsibilities. For example, we remain responsible for ensuring that each of our clinical trials is conducted in accordance with the general investigational plan and protocols for the clinical trial. Moreover, the FDA requires us to comply with standards, commonly referred to as good laboratory practices

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and good clinical practices, for conducting, recording and reporting the results of pre-clinical and clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity and confidentiality of trial participants are protected. Such standards, particularly with respect to newer cell and genetic therapies, will continue to evolve and subject us and third parties to new or changing requirements.
If these third parties do not successfully carry out their contractual duties or meet expected deadlines, we may be required to replace them. Although we believe that there are a number of other third-party contractors we could engage to continue the activities, it may result in a delay of the affected clinical trial, drug development program or applicable activity. If clinical trials are not conducted in accordance with our contractual expectations or regulatory requirements, action by regulatory authorities might significantly and adversely affect the conduct or progress of these clinical trials or in specific circumstances might result in a requirement that a clinical trial be redone. Accordingly, our efforts to obtain regulatory approvals for and commercialize our drug candidates could be delayed. In addition, failure of any third party contractor to conduct activities in accordance with our expectations could adversely affect the relevant research, development, commercial or administrative activity.
Risks Related to Intellectual Property
If our patents do not protect our drugs or our drugs infringe third-party patents, we could be subject to litigation which could result in injunctions preventing us from selling our products or substantial liabilities.
We have numerous issued patents and pending patent applications in the U.S., as well as counterparts in other countries. Our success will depend, in significant part, on our ability to obtain and defend U.S. and foreign patents covering our drugs, their uses and our processes, to preserve our trade secrets and to operate without infringing the proprietary rights of third parties. We cannot be certain that any patents will issue from our pending patent applications or, even if patents issue or have issued, that the issued claims will provide us with adequate protection against competitive products or otherwise be commercially valuable.
Due to evolving legal standards relating to the patentability, validity and enforceability of patents covering pharmaceutical inventions and the scope of claims made under these patents, our ability to obtain, maintain and enforce patents is uncertain and involves complex legal and factual questions. Recent patent reform legislation could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents in the U.S. The Leahy-Smith America Invents Act, or the Leahy-Smith Act, includes a number of significant changes to U.S. patent law. These include provisions that affect the way patent applications are prosecuted and may also affect patent litigation. The U.S. Patent Office developed new regulations and procedures to govern administration of the Leahy-Smith Act, and many of the substantive changes to patent law associated with the Leahy-Smith Act, and in particular, the first to file provisions, became effective in March 2013. The first to file provisions limit the rights of an inventor who is the first to invent an invention but is not the first to file an application claiming that invention. U.S. and foreign patent applications typically are maintained in confidence for a period of time after they initially are filed with the applicable patent office. Consequently, we cannot be certain that we were the first to invent, or the first to file patent applications on, our products or drug candidates or their use. If a third party also has filed a U.S. patent application relating to our drugs or drug candidates, their uses, or a similar invention, we may have to participate in legal or administrative proceedings to determine priority of invention. For applications governed by the Leahy-Smith Act, if a third-party has an earlier filed U.S. patent application relating to our drugs or drug candidates, their uses, or a similar invention, we may be unable to obtain an issued patent from our application.
The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability. Our patents may be challenged by third parties and certain of our patents have been challenged in the past. This could result in the patent being deemed invalid, unenforceable or narrowed in scope, or the third party may circumvent any such issued patents. Also, our pending patent applications may not issue, and we may not receive any additional patents.
Our patents or patents we license might not contain claims that are sufficiently broad to prevent others from developing competing products. For instance, issued patents, or patents that may issue in the future, (i) relating to our small molecules may be limited to a particular molecule or molecules and may not cover similar molecules that have similar clinical properties, and (ii) relating to cell or genetic therapies may not cover similar technologies that would allow competitors to achieve similar results. Consequently, our competitors may independently develop competing products that do not infringe our patents or other intellectual property. In addition, CRISPR only has non-exclusive or co-exclusive rights to the patent rights that protect the core CRISPR/Cas9 gene-editing technology.

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The laws of many foreign jurisdictions do not protect intellectual property rights to the same extent as in the U.S. and many companies in our segment of the pharmaceutical industry have encountered significant difficulties in protecting and defending such rights in foreign jurisdictions. If we encounter such difficulties in protecting or are otherwise precluded from effectively protecting our intellectual property rights in foreign jurisdictions, our business could be substantially harmed.
Because of the extensive time required for the discovery, development, testing and regulatory review of drug candidates, it is possible that a patent may expire before a drug candidate can be commercialized, or a patent may expire or remain in effect for only a short period following commercialization of such drug candidate. This would result in a minimal or non-existent period of patent exclusivity. If our drug candidates are not commercialized significantly ahead of the expiration date of any applicable patent, or if we have no patent protection on such drug candidates, then, to the extent available we would rely on other forms of exclusivity, such as regulatory exclusivity provided by the FDCA and its counterpart agencies in various jurisdictions, and/or orphan drug exclusivity.
Uncertainty over intellectual property in the pharmaceutical and biotechnology industry has been the source of litigation and other disputes, which is inherently costly and unpredictable.
There is considerable uncertainty within our industry about the validity, scope and enforceability of many issued patents in the U.S. and elsewhere in the world, and, to date, the law and practice remains in substantial flux both in the agencies that grant patents and in the courts. We cannot currently determine the ultimate scope and validity of patents which may be granted to third parties in the future or which patents might be asserted as being infringed by the manufacture, use and sale of our products.
There has been, and we expect that there may continue to be, significant litigation in the pharmaceutical industry regarding patents and other intellectual property rights. Litigation, arbitrations, administrative proceedings and other legal actions with private parties and governmental authorities concerning patents and other intellectual property rights may be protracted, expensive and distracting to management. Competitors may sue us as a way of delaying the introduction of our drugs or to remove our drugs from the market. Any litigation, including litigation related to Abbreviated New Drug Applications, or ANDA, litigation related to 505(b)(2) applications, interference proceedings to determine priority of inventions, derivations proceedings, inter partes review, oppositions to patents in foreign countries, litigation against our collaborators or similar actions, may be costly and time consuming and could harm our business. We expect that litigation may be necessary in some instances to determine the validity and scope of certain of our proprietary rights. Litigation may be necessary in other instances to determine the validity, scope or non-infringement of certain patent rights claimed by third parties to be pertinent to the manufacture, use or sale of our products. Ultimately, the outcome of such litigation could adversely affect the validity and scope of our patent or other proprietary rights, hinder our ability to manufacture and market our products, or result in the assessment of significant monetary damages against us that may exceed amounts, if any, accrued in our consolidated financial statements.
On July 24, 2020, we filed a lawsuit against Sun Pharmaceutical Industries Limited, or Sun, in the U.S. District Court for the District of Delaware alleging infringement of U.S. Patent No. 10,646,481, or the ’481 patent. The lawsuit follows Vertex’s receipt of a Notice Letter on June 11, 2020, advising that Sun had submitted an ANDA to the FDA seeking approval to manufacture and market a generic version of the 150 mg tablet of KALYDECO in the U.S. The Notice Letter indicated that Sun submitted a “Paragraph IV” certification to the FDA in which Sun asserted that the ’481 patent is invalid or would not be infringed by Sun’s generic product. The ’481 patent, which expires in 2029, was issued on May 12, 2020, and listed in the Orange Book with respect to KALYDECO 150 mg tablets on June 1, 2020. Sun does not appear to challenge our other U.S. patents covering KALYDECO. Vertex intends to vigorously enforce its intellectual property rights relating to KALYDECO, including the ’481 patent.
CRISPR has licensed certain rights to a worldwide patent portfolio that covers various aspects of the CRISPR/Cas9 editing platform technology including, for example, compositions of matter and methods of use, including their use in targeting or cutting DNA from Dr. Charpentier, one of the named inventors of this patent portfolio. The patent portfolio also has named inventors who assigned their rights either to the Regents of the University of California or the University of Vienna, to whom we refer, together with Dr. Charpentier, as the CVC Group. For example, in connection with their collaboration, Novartis and Intellia Therapeutics, Inc. have obtained a license to this patent portfolio in certain fields. Patents and patent applications in this patent portfolio have been the subject of numerous contentious proceedings in the U.S., Europe, and other jurisdictions, including interference proceedings between the CVC and the Broad Institute in the USPTO. Decisions rendered to date in these proceedings may be subject to appeal. To date, both the CVC and the Broad have obtained granted patents that purport to cover aspects of CRISPR/Cas9 editing platform technology. The patents and patent

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applications within the CVC patent portfolio and the Broad patent portfolio are, or may in the future be, involved in proceedings similar to interferences or priority disputes in Europe or other foreign jurisdictions. We can give no assurances to the ultimate outcome of these proceedings or the dispute between the CVC Group and Broad.
In addition to the Broad, other third parties have filed patent applications claiming CRISPR/Cas9-related inventions and may allege that they invented one or more of the inventions claimed by the CVC Group. Thus, the USPTO may, in the future, declare an interference between certain CVC Group patent applications and one or more patent applications. The Broad, as well as other third parties, could seek to assert its issued patents against us based on our CRISPR/Cas9-based activities, including commercialization. Defense of these claims, regardless of their merit, could involve substantial litigation expense and could result in a substantial diversion of management and other employee resources from our business. In the event of a successful claim of infringement against us, we may have to pay substantial damages, obtain one or more licenses from third parties, pay royalties or redesign our infringing products, which may be impossible or require substantial time and monetary expenditure. In that event, we could be unable to further develop and commercialize CTX001 or other products that we may develop using the CRISPR/Cas9 technology we license from CRISPR.
To the extent that valid present or future third-party patents or other intellectual property rights cover our drugs, drug candidates or technologies, we or our strategic collaborators may seek licenses or other agreements from the holders of such rights in order to avoid or settle legal claims. Such licenses may not be available on acceptable terms, which may hinder our ability to, or prevent us from being able to, manufacture and market our drugs. Payments under any licenses that we are able to obtain would reduce our profits derived from the covered products.
We may be subject to claims by third parties asserting that our employees or we have misappropriated their intellectual property, or claiming ownership of what we regard as our own intellectual property.
Many of our employees were previously employed at universities or other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Although we try to ensure that our employees do not use the proprietary information or know-how of others in their work for us, we may be subject to claims that these employees or we have used or disclosed intellectual property, including trade secrets or other proprietary information, of any such employee’s former employer. Litigation may be necessary to defend against these claims.
In addition, while it is our policy to require our employees and contractors who may be involved in the development of intellectual property to execute agreements assigning such intellectual property to us, we may be unsuccessful in executing such an agreement with each party who in fact develops intellectual property that we regard as our own. Our and their assignment agreements may not be self-executing or may be breached, and we may be forced to bring claims against third parties, or defend claims they may bring against us, to determine the ownership of what we regard as our intellectual property.
If we fail in prosecuting or defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel. Even if we are successful in prosecuting or defending against such claims, litigation could result in substantial costs and be a distraction to management.
Risks Related To Our Operations
Risks associated with operating in foreign countries could materially adversely affect our business.
We have expanded our international operations over the past several years in order to market our CF medicines and expand our research and development capabilities. New laws and industry codes in the E.U. and elsewhere have expanded transparency requirements regarding payments and transfers of value to healthcare professionals, requirements surrounding patient-level clinical trial data, the protection of personal data and increased sanctions for violations. Collectively, our expansion and these new requirements are adding to our compliance costs and potentially exposes us to sanctions in the event of an infringement or failure to report in these jurisdictions. In addition, a significant portion of our commercial supply chain, including sourcing of raw materials and manufacturing, is located in China and the E.U. Consequently, we are, and will continue to be, subject to risks related to operating in foreign countries, including risks relating to intellectual property protections and business interruptions. These risks are increased with respect to countries such as China that have substantially different local laws and business practices and weaker protections for intellectual property. Risks associated with operating a global biotechnology company include:
•    differing regulatory requirements for drug approvals and regulation of approved drugs in foreign countries;

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•    varying reimbursement regimes and difficulties or the inability to obtain reimbursement for our products in foreign countries in a timely manner;
•    differing patient treatment infrastructures, particularly since our business is focused on the treatment of serious diseases that affect relatively smaller numbers of patients and are typically prescribed by specialist physicians;
•    collectability of accounts receivable;
•    changes in tariffs, trade barriers and regulatory requirements, the risks of which appear to have increased in the current political environment;
•    economic weakness, including recession and inflation, or political instability in particular foreign economies and markets;
•    differing levels of enforcement and/or recognition of contractual and intellectual property rights;
•    complying with local laws and regulations, which can change significantly over time;
•    foreign taxes, including withholding of payroll taxes;
•    foreign currency fluctuations, which could result in reduced revenues or increased operating expenses, and other obligations incident to doing business or operating in another country;
•    workforce uncertainty in countries where labor unrest is more common than in the U.S.;
•    reliance on third-party vendors and suppliers;
•    import and export licensing requirements, tariffs, and other trade and travel restrictions;
•    global or regional public health emergencies that could affect our operations or business;
•    production shortages resulting from any events affecting raw material supply or manufacturing capabilities abroad; and
•    business interruptions resulting from geo-political actions, including war and terrorism.
Our revenues are subject to foreign exchange rate fluctuations due to the global nature of our operations. Although we have foreign currency forward contracts to hedge forecasted product revenues denominated in foreign currencies, our efforts to reduce currency exchange losses may not be successful. As a result, currency fluctuations among our reporting currency, the U.S. dollar, and the currencies in which we do business will affect our operating results, often in unpredictable ways.
In addition, our international operations are subject to regulation under U.S. law. For example, the FCPA prohibits U.S. companies and their representatives from offering, promising, authorizing or making payments to foreign officials for the purpose of obtaining or retaining business abroad. In many countries, the health care professionals we regularly interact with may meet the definition of a foreign government official for purposes of the FCPA. We also are subject to import/export control laws. Failure to comply with domestic or foreign laws could result in various adverse consequences, including the possible delay in approval or refusal to approve a product, recalls, seizures, withdrawal of an approved product from the market, the imposition of civil or criminal sanctions, the prosecution of executives overseeing our international operations and corresponding bad publicity and negative perception of our company in foreign countries.
We are subject to risks associated with the global COVID-19 pandemic.
The COVID-19 pandemic has broadly affected the global economy, resulted in significant travel and work restrictions in many regions and has put a significant strain on healthcare resources. COVID-19 has had, and we expect it will continue to have, an impact on our operations, an impact on the operations of our collaborators, third-party contractors and other entities, including governments, governmental agencies and payors, with which we interact, and an impact on the people with CF who take our medicines. To date, the most significant effect on our business operations has been the requirement that a majority of our employees work remotely. We have re-initiated enrollment and dosing in all of our ongoing clinical trials and initiated new clinical trials despite some temporary pauses to enrollment and dosing early in the pandemic.

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We continue to monitor local COVID-19 trends and government guidance for each of our site locations and are utilizing a phased, site-specific approach to assess employee access to our sites. Currently, all of our research and manufacturing sites are open to essential employees. There can be no assurance that our sites will remain open, when additional employees will gain access to our sites or whether we will be required to pause enrollment and dosing at clinical trial sites. Any site closure or pause of a clinical trial could harm our operations and delay the development of our product candidates. In addition, even if sites or clinical trials are open for enrollment, COVID-19 may nevertheless impact clinical trial enrollment or participation, for example due to suspension of in-person procedures required for enrollment, government shut-down orders, or decreased patient willingness to participate compared to pre-COVID-19 pandemic levels. COVID-19 may also impact uptake of our medicines generally and patient retention in clinical trials, potentially resulting in higher drop-out rates or missed visits, which may negatively affect the strength of our clinical trial data.
In the future, the economic impacts of the COVID-19 pandemic could affect our business directly or indirectly, including potentially affecting the net prices for our products through changes in our payor mix as a result of increased unemployment in the U.S. or increased pressure on healthcare costs in the U.S. and around the world. The effects on our research, development, manufacturing and commercialization activities, including the virtual launch of KAFTRIO in the E.U., will be dependent on, among other things, the severity and duration of the COVID-19 pandemic and any worsening of the global economic environment as a result thereof, as well as the impact of the pandemic on our third-party manufacturers, suppliers, distributors, subcontractors and customers. While the ultimate impact of COVID-19 on our business is highly uncertain, any negative impacts that materialize could materially adversely affect our operations, financial performance and stock price. Any negative impacts of COVID-19, alone or in combination with others, could exacerbate other risk factors discussed herein. The full extent to which the COVID-19 pandemic will negatively affect our operations, financial performance and stock price will depend on future developments that are highly uncertain and cannot be predicted, including the scope and duration of the pandemic and actions taken by governmental authorities and other third parties in response to the pandemic.
If we fail to manage our operations effectively, our business may suffer.
We have expanded and are continuing to expand our global operations and capabilities, which has placed, and will continue to place, significant demands on our management and our operational, research and development and financial infrastructure. To effectively manage our business, we need to:
implement and clearly communicate our corporate-wide strategies;
enhance our operational and financial infrastructure, including our controls over records and information;
enhance our operational, financial and management processes, including our cross-functional decision-making processes and our budget prioritization systems;
train and manage our global employee base; and
enhance our compliance and legal resources.
If we fail to attract and retain skilled employees, our business could be materially harmed.
Due to the highly technical nature of our drug discovery and development activities, we require the services of highly qualified and trained scientists who have the skills necessary to conduct these activities. In addition, we need to attract and retain employees with experience in marketing and commercialization of medicines. We have entered into employment agreements with some executives and provide stock-related compensation benefits to all of our key employees that vest over time and therefore induce them to remain with us. However, the employment agreements can be terminated by the executive on relatively short notice. The value to employees of stock-related benefits that vest over time - such as restricted stock units and stock options - can be significantly affected by movements in our stock price, and may, at any point in time, be insufficient to counteract more lucrative offers from other companies. We face intense competition for our personnel from our competitors and other companies throughout our industry, especially with respect to employees with expertise in cell or genetic therapies. We also experience competition for the hiring of scientific and clinical personnel from universities and research institutions. Moreover, the growth of local biotechnology companies and the expansion of major pharmaceutical companies into the Boston area has increased competition for the available pool of skilled employees, especially in technical fields. The high cost of living can make it difficult to attract employees from other parts of the country to our Massachusetts headquarters. In addition, the available pool of skilled employees would be further reduced if immigration laws change in a manner that increases restrictions on immigration. Our ability to continue to commercialize our products and achieve our

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research and development objectives depends on our ability to respond effectively to these demands. If we are unable to hire and retain qualified personnel, there could be a material adverse effect on our business.
Our business faces potential risks relating to the United Kingdom’s withdrawal from the European Union.
Our European headquarters and European research facility are located in the U.K., and a significant portion of our ex-U.S. net product revenues are derived from sales in the U.K. On January 31, 2020, the U.K. formally withdrew from the E.U., also known as Brexit. The U.K. and the E.U. negotiated a detailed post-Brexit Trade and Cooperating Agreement which went into effect on January 1, 2021. As of January 1, 2021, E.U. Treaties, E.U. free movement rights and the general principals of E.U. law no longer apply in relation to the U.K. By virtue of the E.U. (Withdrawal) Act 2018, E.U. relations will continue to apply in U.K. domestic law to the extent that they are not modified of revoked by regulations under that Act. Brexit could lead to legal uncertainty and potentially divergent national laws and regulations as the U.K. determines which E.U. laws to replace or replicate. Given the lack of comparable precedent, it is unclear what financial, trade, regulatory and legal implications the withdrawal of the U.K. from the E.U. would have and how such withdrawal would affect us. Any of these effects of Brexit, among others, could adversely affect our business, financial condition and operating results.
Our business has a substantial risk of product liability claims and other litigation liability.
We are or may be involved in various legal proceedings, including securities/shareholder matters and claims related to product liability, intellectual property and breach of contract. Such proceedings may involve claims for, or the possibility of, damages or fines and penalties involving substantial amounts of money or other relief, including but not limited to civil or criminal fines and penalties. If any of these legal proceedings were to result in an adverse outcome, it could have a material adverse effect on our business.
With respect to product liability and clinical trial risks, in the ordinary course of business we are subject to liability claims and lawsuits, including potential class actions, alleging that our products or drug candidates have caused, or could cause, serious adverse events or other injury. We have product liability insurance and clinical trial insurance in amounts that we believe are adequate to cover this risk. However, our insurance may not provide adequate coverage against all potential liabilities. If a claim is brought against us, we might be required to pay legal and other expenses to defend the claim, as well as pay uncovered damage awards resulting from a claim brought successfully against us and these damages could be significant and have a material adverse effect on our financial condition. Furthermore, whether or not we are ultimately successful in defending any such claims, we might be required to direct significant financial and managerial resources to such defense and adverse publicity is likely to result.
A breakdown or breach of our information technology systems could subject us to liability or interrupt the operation of our business.
We maintain and rely extensively on information technology systems and network infrastructures for the effective operation of our business. In the course of our business, we collect, store and transmit confidential information (including personal information and intellectual property), and it is critical that we do so in a secure manner to maintain the confidentiality and integrity of such confidential information. The size and complexity of our information technology and information security systems makes such systems potentially vulnerable to service interruptions and to security breaches. A disruption, infiltration or failure of our information technology systems or any of our data centers as a result of software or hardware malfunctions, computer viruses, cyber-attacks, employee theft or misuse, power disruptions, natural disasters, floods or accidents could cause breaches of data security and loss of critical data, which in turn could materially adversely affect our business and subject us to both private and governmental causes of action. While we have implemented security measures in an attempt to minimize these risks to our data and information technology systems and have adopted a business continuity plan to deal with a disruption to our information technology systems, cyber-attacks are increasing in their frequency, sophistication and intensity, and have become increasingly difficult to detect. There can be no assurance that our efforts to protect our data and information systems will prevent breakdowns or breaches in our systems that could adversely affect our business. In addition, our liability insurance may not be sufficient in type or amount to cover us against claims related to security breaches, cyber-attacks or other related liabilities.
Risk of cyber-attack is increased with the majority of employees working remotely during the ongoing COVID-19 pandemic. During this time, there is an increased risk that we may be vulnerable to cybersecurity-related events such as phishing attacks and other security threats as a result of our employees, third party vendors and collaborators working remotely from non-corporate managed networks.

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If our facilities were to experience a catastrophic loss, our operations would be seriously harmed.
Most of our operations, including our research and development activities, are conducted in a limited number of facilities. If any of our major facilities were to experience a catastrophic loss, due to an earthquake, severe storms, fire or similar event, our operations could be seriously harmed. For example, our corporate headquarters, as well as additional leased space that we use for certain logistical and laboratory operations and manufacturing, are located in a flood zone along the Massachusetts coast. We have adopted a business continuity plan to address most crises. However, if we are unable to fully implement our business continuity plans, we may experience delays in recovery of data and/or an inability to perform vital corporate functions, which could result in a significant disruption in our research, development, manufacturing and/or commercial activities, large expenses to repair or replace the facility and/or the loss of critical data, which could have a material adverse effect on our business.
The use of social media platforms presents risks and challenges.
Social media is being used by third parties to communicate about our products and drug candidates and the diseases our therapies are designed to treat. We believe that members of the CF community may be more active on social media as compared to other patient populations due to the demographics of this patient population. Social media practices in the pharmaceutical and biotechnology industries are evolving, which creates uncertainty and risk of noncompliance with regulations applicable to our business. For example, patients may use social media platforms to comment on the effectiveness of, or adverse experiences with, a drug or a drug candidate, which could result in reporting obligations. In addition, our employees may engage on social media in ways that may not comply with legal or regulatory requirements, which may give rise to liability, lead to the loss of trade secrets and other intellectual property, or result in public disclosure of protected personal information. There is a risk of inappropriate disclosure of sensitive information or negative or inaccurate posts or comments about us on any social networking website. Certain data protection regulations, such as the GDPR, apply to personal data contained on social media. If any of these events were to occur or we otherwise fail to comply with applicable regulations, we could incur liability, face regulatory actions or incur harm to our business, including damage to our reputation.
Risks Related to Financial Results and Holding Our Common Stock
Our stock price may fluctuate.
Market prices for securities of companies such as ours are highly volatile. From January 1, 2020 to December 31, 2020, our common stock traded between $197.47 and $306.08 per share. The market for our stock, like that of other companies in the biotechnology industry, has experienced significant price and volume fluctuations. The future market price of our securities could be significantly and adversely affected by factors such as:
•    the information contained in our quarterly earnings releases, including our net product revenues and operating expenses for completed periods and guidance regarding future periods;
•    announcements of FDA actions with respect to our therapies or those of our competitors, or regulatory filings for our therapies or those of our competitors, or announcements of interim or final results of clinical trials or nonclinical studies relating to our therapies or those of our competitors;
developments in domestic and international governmental policy or regulation, for example, relating to drug pricing or intellectual property rights;
technological innovations or the introduction of new drugs by our competitors;
•    government regulatory action;
•    public concern as to the safety of drugs developed by us or our competitors;
•    developments in patent or other intellectual property rights or announcements relating to these matters;
information disclosed by third parties regarding our business or products;
•    developments relating specifically to other companies and market conditions for pharmaceutical and biotechnology stocks or stocks in general;

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•    business development, capital structuring or financing activities; and
•    general worldwide or national economic, political and capital market conditions, including as a result of the ongoing COVID-19 pandemic.
Following periods of volatility in the market price of a company’s securities, stockholder derivative lawsuits and securities class action litigation are common. Such litigation, if instituted against us or our officers and directors, could result in substantial costs and a diversion of management’s attention and resources.
Our quarterly operating results are subject to significant fluctuation.
Our operating results have fluctuated from quarter to quarter in the past, and we expect that they will continue to do so in the future. Our revenues are primarily dependent on the level of net product revenues from sales of our CF medicines. Our total net product revenues could vary on a quarterly basis based on, among other factors, the timing of orders from our significant customers. Additional factors that have caused quarterly fluctuations to our operating results in recent years include variable amounts of revenues, expenses related to business development activities, changes in the fair value of our strategic investments, impairment charges, charges for excess and obsolete inventories, changes in the fair value of derivative instruments and the consolidation or deconsolidation of variable interest entities. Our revenues also are subject to foreign exchange rate fluctuations due to the global nature of our operations. Although we have foreign currency forward contracts to hedge forecasted product revenues denominated in foreign currencies, our efforts to reduce currency exchange losses may not be successful. As a result, currency fluctuations among our reporting currency, the U.S. dollar, and the currencies in which we do business may affect our operating results, often in unpredictable ways. Our quarterly results also could be materially affected by significant charges, which may or may not be similar to charges we have experienced in the past. Most of our operating expenses relate to our research and development activities, do not vary directly with the amount of revenues and are difficult to adjust in the short term. As a result, if revenues in a particular quarter are below expectations, we are unlikely to reduce operating expenses proportionately for that quarter. These examples are only illustrative and other risks, including those discussed in these “Risk Factors,” could also cause fluctuations in our reported financial results. Our operating results during any one period do not necessarily suggest the results of future periods.
We expect that results from our clinical development activities and the clinical development activities of our competitors will continue to be released periodically, and may result in significant volatility in the price of our common stock.
Any new information regarding our products and drug candidates or competitive products or potentially competitive drug candidates can substantially affect investors’ perceptions regarding our future prospects. We, our collaborators and our competitors periodically provide updates regarding drug development programs, typically through press releases, conference calls and presentations at medical conferences. These periodic updates often include interim or final results from clinical trials conducted by us or our competitors and/or information about our or our competitors’ expectations regarding regulatory filings and submissions as well as future clinical development of our products or drug candidates, competitive products or potentially competitive drug candidates. The timing of the release of information by us regarding our drug development programs is often beyond our control and is influenced by the timing of receipt of data from our clinical trials and by the general preference among pharmaceutical companies to disclose clinical data during medical conferences. In addition, the information disclosed about our clinical trials, or our competitors’ clinical trials, may be based on interim rather than final data that may involve interpretation difficulties and may in any event not accurately predict final results. The release of such information may result in volatility in the price of our common stock.
Changes in tax laws, regulations and treaties could affect our future taxable income.
We are subject to taxation in numerous countries, states and other jurisdictions. As a result, our effective tax rate is derived from a combination of applicable tax rates in the various places that we operate globally. Our effective tax rate may be different than experienced in the past due to numerous factors, including changes in the mix of our profitability from country to country, the results of tax authority examinations/audits of our tax filings, adjustments to the value of our uncertain tax positions, changes in accounting for income taxes and changes in tax laws or modifications of treaties in various jurisdictions. For example, changes to the U.S. tax code are anticipated under the new administration. Any of these factors could cause us to experience an effective tax rate that is significantly different from previous periods or our current expectations.

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We continue to assess the impact of various tax reform proposals and modifications to existing tax treaties in all jurisdictions where we have operations to determine the potential effect on our business and any assumptions we have made about our future taxable income. We cannot predict whether any specific proposals will be enacted, the terms of any such proposals or what effect, if any, such proposals would have on our business if they were to be enacted.
Recommendations from the Organization for Economic Co-operation and Development that are part of the base erosion and profit shifting, or BEPS, framework could result in changes in tax laws in countries where we do business and adversely affect our provision for income taxes and our current rate. If these recommendations (or other changes in law) were adopted by the countries in which we do business, it could adversely affect our provision for income tax and our current rate.
General Risk Factors
We may need to raise additional capital that may not be available.
We may need to raise additional capital in the future. Any potential public offering, private placement or debt financing may or may not be similar to the transactions that we entered into in the past. Any debt financing may be on terms that, among other things, include conversion features that could result in dilution to our then-existing security holders and restrict our ability to pay interest and dividends—although we do not intend to pay dividends for the foreseeable future. Any equity financings would result in dilution to our then-existing security holders. If adequate funds are not available on acceptable terms, or at all, we may be required to curtail significantly or discontinue one or more of our research, drug discovery or development programs, including clinical trials, incur significant cash exit costs, or attempt to obtain funds through arrangements with collaborators or others that may require us to relinquish rights to certain of our technologies, drugs or drug candidates. Based on many factors, including general economic conditions, additional financing may not be available on acceptable terms, if at all.
Future indebtedness could materially and adversely affect our financial condition, and the terms of our credit agreements impose restrictions on our business, reducing our operational flexibility and creating default risks.
In 2019, we entered into a credit agreement providing for a $500 million revolving facility. In September 2020, we entered into a second credit agreement providing for a $2.0 billion revolving facility. Each of the credit agreements provides that, subject to the satisfaction of certain conditions, we may request the borrowing capacity be increased by an additional $500.0 million. If we borrow under our current credit agreements or any future credit agreement, such indebtedness could have important consequences to our business, including increasing our vulnerability to general adverse financial, business, economic and industry conditions, as well as other factors that are beyond our control. The credit agreements require that we comply with certain financial covenants, including (i) a consolidated leverage ratio covenant and (ii) a consolidated interest coverage ratio covenant, in each case to be measured on a quarterly basis. Further, the credit agreements include negative covenants, subject to exceptions, restricting or limiting our ability and the ability of our subsidiaries to, among other things, incur additional indebtedness, grant liens, engage in certain investment, acquisition and disposition transactions, pay dividends, repurchase capital stock and enter into transactions with affiliates. As a result, we may be restricted from engaging in business activities that may otherwise improve our business. Failure to comply with the covenants could result in an event of default that could trigger acceleration of our indebtedness, which would require us to repay all amounts owing under the credit agreements and/or our finance leases and could have a material adverse effect on our business. Additionally, our obligations under the credit agreements are unconditionally guaranteed by certain of our domestic subsidiaries.
Issuances of additional shares of our common stock could cause the price of our common stock to decline.
As of December 31, 2020, we had 259.9 million shares of common stock issued and outstanding. As of December 31, 2020, we also had outstanding options to purchase 4.2 million shares of common stock with a weighted-average exercise price of $140.47 per share. Outstanding vested options are likely to be exercised if the market price of our common stock exceeds the applicable exercise price, and, in the future, we expect to issue additional equity awards to directors and employees. In addition, we may issue additional common stock or restricted securities in the future as part of financing activities or business development activities and any such issuances may have a dilutive effect on our then-existing shareholders. Sales of substantial amounts of our common stock in the open market, or the availability of such shares for sale, could adversely affect the price of our common stock. The issuance of restricted common stock or common stock upon exercise of any outstanding options would be dilutive, and may cause the market price for a share of our common stock to decline.

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There can be no assurance that we will repurchase shares of common stock or that we will repurchase shares at favorable prices.
In November 2020, our Board of Directors authorized a share repurchase program pursuant to which we are authorized to repurchase up to $500 million of our common stock by December 31, 2022. As of December 31, 2020, we had repurchased $75.1 million of common stock under the share repurchase program and had remaining available $424.9 million to repurchase additional shares pursuant to this program.
Our stock repurchases will depend upon, among other factors, our cash balances and potential future capital requirements, results of operations, financial condition and other factors that we may deem relevant. We can provide no assurance that we will repurchase stock at favorable prices, if at all.
We have adopted anti-takeover provisions and are subject to Massachusetts corporate laws that may frustrate any attempt to remove or replace our current management or effectuate a business combination involving Vertex.
Our corporate charter and by-law provisions and Massachusetts state laws may discourage certain types of transactions involving an actual or potential change of control of Vertex that might be beneficial to us or our security holders. Our by-laws grant the directors a right to adjourn annual meetings of shareholders, and certain provisions of our by-laws may be amended only with an 80% shareholder vote. We may issue shares of any class or series of preferred stock in the future without shareholder approval and upon such terms as our Board of Directors may determine. The rights of the holders of common stock will be subject to, and may be adversely affected by, the rights of the holders of any class or series of preferred stock that may be issued in the future. Massachusetts state law prohibits us from engaging in specified business combinations, unless the combination is approved or consummated in a prescribed manner, and prohibits voting by any shareholder who acquires 20% or more of our voting stock without shareholder approval. As a result, shareholders or other parties may find it more difficult to remove or replace our current management.
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
This Annual Report on Form 10-K, including the descriptions of our Business set forth in Part I, Item 1, our Risk Factors set forth in Part I, Item 1A, and our Management’s Discussion and Analysis of Financial Condition and Results of Operations set forth in Part II, Item 7, contains forward-looking statements. Forward-looking statements are not purely historical and may be accompanied by words such as “anticipates,” “may,” “forecasts,” “expects,” “intends,” “plans,” “potentially,” “believes,” “seeks,” “estimates,” and other words and terms of similar meaning. Such statements may relate to:
•    our expectations regarding the amount of, timing of, and trends with respect to our financial performance, including revenues, costs and expenses and other gains and losses;
•    our expectations regarding clinical trials, including expectations for patient enrollment, development timelines, the expected timing of data from our ongoing and planned clinical trials, and regulatory authority filings and submissions for our therapies;
•    our ability to obtain reimbursement for our medicines in ex-U.S. markets and our ability to launch, commercialize and market our medicines or any of our other therapies for which we obtain regulatory approval;
•    the data that will be generated by ongoing and planned clinical trials and the ability to use that data to advance compounds, continue development or support regulatory filings;
•    our beliefs regarding the support provided by clinical trials and preclinical and nonclinical studies of our therapies for further investigation, clinical trials or potential use as a treatment;
•    our plans to continue investing in our research and development programs, including anticipated timelines for our programs, and our strategy to develop our pipeline programs, alone or with third party-collaborators;
our beliefs regarding the approximate patient populations for each of our disease areas;
•    the potential benefits and therapeutic scope of our acquisitions and collaborations;
•    the establishment, development and maintenance of collaborative relationships, including potential milestone payments or other obligations;

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•    potential business development activities, including the identification of potential collaborative partners or acquisition targets;
•    potential fluctuations in foreign currency exchange rates;
•    our expectations regarding our provision for or benefit from income taxes and the utilization of our deferred tax assets, including the impact of the Coronavirus Aid, Relief and Economic Security Act;
•    our ability to use our research programs to identify and develop new drug candidates to address serious diseases and significant unmet medical needs;
•    our plans to expand, strengthen, and invest in our global supply chains and manufacturing infrastructure and capabilities;
•    our expectations regarding the effect of the COVID-19 pandemic on, among other things, our financial performance, liquidity, business and operations, including manufacturing, supply chain, research and development activities and pipeline programs; and
•    our liquidity and our expectations regarding the possibility of raising additional capital.
Forward-looking statements are subject to certain risks, uncertainties, or other factors that are difficult to predict and could cause actual events or results to differ materially from those indicated in any such statements. These risks, uncertainties, and other factors include, but are not limited to, those described in our Risk Factors, set forth in Part I, Item 1A, and elsewhere in this report and those described from time to time in our future reports filed with the Securities and Exchange Commission.
Any such forward-looking statements are made on the basis of our views and assumptions as of the date of the filing and are not estimates of future performance. Except as required by law, we undertake no obligation to publicly update any forward-looking statements. The reader is cautioned not to place undue reliance on any such statements.

ITEM 1B.UNRESOLVED STAFF COMMENTS
We did not receive any written comments from the Securities and Exchange Commission prior to the date 180 days before the end of the fiscal year ended December 31, 2020 regarding our filings under the Securities Exchange Act of 1934, as amended, that have not been resolved.

ITEM 2.PROPERTIES
Corporate Headquarters
We lease approximately 1.1 million square feet of office and laboratory space at our corporate headquarters in Boston, Massachusetts in two buildings pursuant to two leases that we entered into in May 2011. These leases commenced in December 2013 and will extend until December 2028. We have an option to extend the term of the leases for an additional ten years.
Additional United States and Worldwide Locations
In addition to our corporate headquarters, we lease an aggregate of approximately 678,000 square feet of space globally. This space includes logistical, laboratory, commercial and manufacturing operations, as well as laboratory and office space to support our research and development organizations. We also own approximately 213,000 square feet at our continuous manufacturing facility in Massachusetts.

ITEM 3.LEGAL PROCEEDINGS
We are not currently subject to any material legal proceedings.

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ITEM 4.MINE SAFETY DISCLOSURES
Not applicable.

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PART II

ITEM 5.MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES
Market Information
Our common stock is traded on The Nasdaq Global Select Market under the symbol “VRTX.”
Shareholders
As of January 31, 2021, there were 115 holders of record of our common stock.
Performance Graph
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Dividends
We currently expect that any future earnings will be retained for use in our business. Any future determination to declare cash dividends will be subject to the discretion of our board of directors and applicable law and will depend on various factors, including our results of operations, financial condition, prospects and any other factors deemed relevant by our board of directors. In addition, our credit agreement limits our ability to pay cash dividends on our common stock.

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Issuer Repurchases of Equity Securities
In July 2019, our Board of Directors approved a share repurchase program (the “2019 Share Repurchase Program”), pursuant to which we were authorized to repurchase up to $500.0 million of our common stock between August 1, 2019 and December 31, 2020. As of December 31, 2020, we had repurchased the entire $500.0 million of common stock that was authorized under the 2019 Share Repurchase Program.
In November 2020, our Board of Directors approved a new share repurchase program (the “2020 Share Repurchase Program”), pursuant to which we are authorized to repurchase up to $500.0 million of our common stock by December 31, 2022. As of December 31, 2020, there was a total of $424.9 million remaining for repurchases under the 2020 Share Repurchase Program.
The table set forth below shows repurchases of securities by us during the three months ended December 31, 2020 under our 2019 Share Repurchase Program and our 2020 Share Repurchase Program.
Period
Total Number
of Shares Purchased
Average Price
Paid per Share
Total Number of Shares
Purchased as Part of
Publicly Announced
Plans or Programs (3)
Approximate dollar value of
Shares that May Yet be Purchased Under
the Plans or Programs (3)
Oct. 1, 2020 to Oct. 31, 2020 (1)252,375 $221.90 252,375 $— 
Nov. 1, 2020 to Nov. 30, 2020 (2)345,897 $217.08 345,897 $424,912,410 
Dec. 1, 2020 to Dec. 31, 2020 (2)— $— — $424,912,410 
Total
598,272 $219.12 598,272 $424,912,410 
(1)Shares purchased and approximate dollar value of shares that may yet be purchased under our 2019 Share Repurchase Program.
(2)Shares purchased and approximate dollar value of shares that may yet be purchased under our 2020 Share Repurchase Program.
(3)Under our 2020 Share Repurchase Program, we are authorized to purchase shares from time to time through open market or privately negotiated transactions. Such purchases may be made pursuant to Rule 10b5-1 plans or other means as determined by our management and in accordance with the requirements of the Securities and Exchange Commission. The approximate dollar value of shares that may yet be repurchased is based solely on shares that may be repurchased under the share repurchase program and excludes any shares that may be repurchased under our employee equity programs.


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ITEM 6.SELECTED FINANCIAL DATA
The following unaudited selected consolidated financial data are derived from our audited consolidated financial statements. These data should be read in conjunction with our audited consolidated financial statements and related notes that are included elsewhere in this Annual Report on Form 10-K and with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in Item 7.
Year Ended December 31,
20202019201820172016
Consolidated Statements of Operations Data:(in thousands, except per share amounts)
Product revenues, net$6,202,783 $4,160,726 $3,038,325 $2,165,480 $1,683,632 
Collaborative and royalty revenues2,900 2,095 9,272 323,172 18,545 
Total revenues6,205,683 4,162,821 3,047,597 2,488,652 1,702,177 
Total costs and expenses (1)3,349,393 2,965,255 2,412,447 2,365,409 1,692,241 
Provision for (benefit from) income taxes (2)405,151 218,109 (1,486,862)(107,324)16,665 
Net income (loss) attributable to Vertex$2,711,647 $1,176,810 $2,096,896 $263,484 $(112,052)
Diluted income (loss) per share attributable to Vertex common shareholders
$10.29 $4.51 $8.09 $1.04 $(0.46)
Shares used in per diluted share calculations263,396 260,673 259,185 253,225 244,685 
As of December 31,
20202019201820172016
Consolidated Balance Sheet Data:(in thousands)
Cash, cash equivalents and marketable securities$6,658,897 $3,808,294 $3,168,242 $2,088,666 $1,434,557 
Deferred tax assets (2)882,779 1,190,815 1,499,672 — — 
Total assets11,751,808 8,318,465 6,245,898 3,546,014 2,896,787 
Total current liabilities1,877,533 1,334,827 1,120,290 807,260 792,537 
Long-term finance leases539,042 538,576 581,550 583,902 521,335 
Other long-term liabilities648,418 359,818 108,853 112,546 244,724 
Total shareholders’ equity8,686,815 6,085,244 4,435.203 2,042,306 1,338,191 
(1)    Total costs and expenses included (i) in 2017, an intangible asset impairment charge of $255.3 million, and (ii) in 2020, 2019, 2018 and 2017, collaborative license and asset acquisition expenses of $184.6 million, $318.3 million, $111.9 million and $168.7 million, respectively. See Note B, “Collaborative Arrangements.”
(2)    In 2018, we released the valuation allowance on the majority of our net operating losses and other deferred tax assets resulting in a benefit from income taxes of $1.56 billion in the fourth quarter of 2018 and we recorded a $1.50 billion deferred tax asset on our consolidated balance sheet as of December 31, 2018. In 2020 and 2019, we began recording a provision for income taxes on our pre-tax income approximating statutory rates. In 2020, our provision for income taxes included discrete tax benefits associated with the $209.0 million transfer of intellectual property rights to the U.K., the write-off of a long-term intercompany receivable, and an increase in the U.K.’s corporate tax rate. See Note O, “Income Taxes.” In 2017, we recorded a benefit from income taxes related to the impairment of an intangible asset.

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ITEM 7.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
OVERVIEW
We invest in scientific innovation to create transformative medicines for people with serious diseases with a focus on specialty markets. We have four approved medicines to treat cystic fibrosis, or CF, a life-threatening genetic disease, and we are focused on increasing the number of patients eligible and able to receive our current medicines through label expansions, approval of new medicines and expanded reimbursement. We are broadening our pipeline into additional disease areas through internal research efforts and accessing external innovation through business development transactions.
Our triple combination regimen, TRIKAFTA/KAFTRIO, was approved in 2019 in the United States, or U.S., and in 2020 in the European Union, or E.U. Collectively, our four medicines are approved to treat the majority of the approximately 83,000 people with CF in North America, Europe and Australia. We are evaluating our medicines, including our triple combination regimen, in additional patient populations, including younger children, with the goal of having small molecule treatments for up to 90% of people with CF. We are also pursuing genetic therapies to address the remaining 10% of people with CF.
Beyond CF, our small molecule programs include programs focused on developing treatments for alpha-1 antitrypsin, or AAT, deficiency, APOL1-mediated kidney diseases and pain. We are also focused on developing cell and genetic therapies for various diseases in our pipeline. We are evaluating CTX001, a genetic therapy, as a potential treatment for sickle cell disease, or SCD, and transfusion-dependent beta thalassemia, or TDT, in Phase 1/2 clinical trials in collaboration with CRISPR Therapeutics AG, or CRISPR. In T1D, we are pursuing two programs for the transplant of functional islets into patients: transplantation of islet cells alone, using immunosuppression to protect the implanted cells, and implantation of the islet cells inside a novel immunoprotective device. In 2020, we continued to advance our cell and genetic therapy pipeline programs through internal research efforts and investing in business development transactions to access emerging technologies.
Financial Highlights
Revenues
In 2020, our net product revenues continued to increase due to the approval of TRIKAFTA in late 2019 and uptake of our medicines in ex-U.S. markets following the approval of KAFTRIO and completion of several significant reimbursement agreements.
Expenses
Our total R&D and SG&A expenses increased from $2.41 billion in 2019 to $2.60 billion in 2020. In 2020, cost of sales was approximately 12% of our net product revenues.

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Business Updates
Cystic Fibrosis
We expect to continue to grow our CF business through increasing the number of people with CF eligible and able to receive our medicines and providing improved treatment options for people who are already eligible for one of our medicines. Since the beginning of 2020, we have made important progress in activities supporting these efforts.
In August, the European Commission granted marketing authorization for KAFTRIO to treat people with CF 12 years of age and older with one F508del mutation and one minimal function mutation, or two F508del mutations.
The FDA expanded the eligibility for TRIKAFTA to include people with CF 12 years of age and older with certain mutations that are responsive to TRIKAFTA based on in vitro data. SYMDEKO and KALYDECO also received approvals to include additional responsive mutations in people with CF 6 years of age and older and 4 months of age and older, respectively.
In January 2021, the FDA accepted our supplemental New Drug Application, or sNDA, for TRIKAFTA for the treatment of children with CF 6 to 11 years of age with at least one F508del mutation or have certain mutations that are responsive to TRIKAFTA based on in vitro data. The FDA granted Priority Review of the sNDA.
The European Commission approved the label extension of SYMKEVI in combination with KALYDECO for the treatment of children with CF 6 years of age and older with two F508del mutations or one F508del mutation and certain residual function mutations.
The FDA approved KALYDECO for treatment of infants with CF four months of age and older who have at least one mutation in their CFTR gene that is responsive to KALYDECO.
The European Commission approved KALYDECO for treatment of infants with CF four months of age and older who have the R117H mutation or certain gating mutations.
Pipeline
We continue to advance a broad pipeline of potentially transformative small molecule, cell and genetic therapies aimed at treating serious diseases. Since the beginning of 2020, we have made important progress in activities supporting these efforts.
Beta Thalassemia and Sickle Cell Disease
In December, we and our collaborator, CRISPR, announced positive interim data from 10 people with TDT or SCD treated with CTX001 and that 20 people with severe hemoglobinopathies have been dosed with CTX001 in the ongoing Phase 1/2 clinical trials. Enrollment and dosing are ongoing, and completion of enrollment in both clinical trials is expected in 2021.
Alpha-1 Antitrypsin Deficiency
Enrollment is ongoing in a Phase 2 proof-of-concept clinical trial for the corrector VX-864. We expect data from this clinical trial in the first half of 2021.
We discontinued development of VX-814, our first corrector, based on the safety and pharmacokinetic profile of VX-814 observed in a Phase 2 clinical trial.
APOL1-Mediated Kidney Diseases
Enrollment is ongoing in a Phase 2 proof-of-concept clinical trial designed to evaluate the reduction of proteinuria in people with APOL1-mediated FSGS after treatment with VX-147. We expect data from this clinical trial in 2021.
Type 1 Diabetes
We are developing a cell therapy designed to replace insulin-producing islet cells in patients with T1D. We are pursuing two programs for the transplant of these functional islets into patients: transplantation of islet cells alone,

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using immunosuppression to protect the implanted cells, and implantation of the islet cells inside a novel immunoprotective device.
In January 2021, the FDA cleared our IND for VX-880, the islet cells alone program. We expect to initiate a Phase 1/2 clinical trial evaluating this program in the first half of 2021. This clinical trial will involve an infusion of fully differentiated, functional islet cells, and chronic administration of concomitant immunosuppressive therapy, to protect the islet cells from immune rejection.
Investment in External Innovation
We entered into a collaboration with Skyhawk Therapeutics, Inc., or Skyhawk, for the discovery and development of novel small molecules that modulate RNA splicing for the treatment of serious diseases.
We entered into a new collaboration with Moderna, Inc., or Moderna, aimed at the discovery and development of lipid nanoparticles and mRNAs that can deliver gene-editing therapies to lung cells for the treatment of CF.
We entered into a collaboration with Affinia Therapeutics, Inc., or Affinia, to gain access to a novel library of AAV capsids to support on our ongoing research and development efforts in genetic therapies, including DMD, DM1 and CF.
COVID-19
We continue to monitor the impacts of the COVID-19 global pandemic on our business. COVID-19 has not affected our supply chain or the demand for our medicines, and we believe that we will be able to continue to supply all of our approved medicines to patients globally. We have adjusted our business operations in response to COVID-19, with a majority of our employees continuing to work remotely. We continue to monitor local COVID-19 trends and government guidance for each of our site locations, and are utilizing a phased, site-specific approach to assess employee access to our sites. Currently, all of our research and manufacturing sites are open to essential employees. To provide a safe working environment for our on-site employees, we have, among other things, limited employee numbers at our open sites and increased safety measures, including at home and on-site testing in the U.S., enhanced cleaning and sanitation protocols, required use of personal protective equipment for all on-site employees, hand sanitation stations throughout our open sites and implementation of various social distancing measures while on-site.
Research
We continue to invest in our research programs and foster scientific innovation in order to identify and develop transformative medicines. Our strategy is to combine transformative advances in the understanding of human disease and the science of therapeutics in order to identify and develop new medicines. We believe that pursuing innovative approaches to treat diverse diseases of great unmet need allows us to balance the risks inherent in drug development and may provide drug candidates that will form our pipeline in future years. To supplement our internal research programs, we acquire technologies and programs and collaborate with biopharmaceutical and technology companies, leading academic research institutions, government laboratories, foundations and other organizations, as needed, to advance research in our areas of therapeutic interest and to access technologies needed to execute on our strategy.
Drug Discovery and Development
Discovery and development of a new pharmaceutical product is a difficult and lengthy process that requires significant financial resources along with extensive technical and regulatory expertise. Potential drug candidates are subjected to rigorous evaluations, driven in part by stringent regulatory considerations, designed to generate information concerning efficacy, side effects, proper dosage levels and a variety of other physical and chemical characteristics that are important in determining whether a drug candidate should be approved for marketing as a pharmaceutical product. Most chemical compounds that are investigated as potential drug candidates never progress into development, and most drug candidates that do advance into development never receive marketing approval. Because our investments in drug candidates are subject to considerable risks, we closely monitor the results of our discovery, research, clinical trials and nonclinical studies and frequently evaluate our drug development programs in light of new data and scientific, business and commercial insights, with the objective of balancing risk and potential. This process can result in rapid changes in focus and priorities as new information becomes available and as we gain additional understanding of our ongoing programs and potential new programs, as well as those of our competitors. For example, in October 2020, we discontinued development of VX-814, a

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drug candidate for the treatment of AAT, based on the safety and pharmacokinetic profile of VX-814 observed in a Phase 2 clinical trial.
If we believe that data from a completed registration program support approval of a drug candidate, we submit an NDA or BLA to the FDA requesting approval to market the drug candidate in the U.S. and seek analogous approvals from comparable regulatory authorities in jurisdictions outside the U.S. To obtain approval, we must, among other things, demonstrate with evidence gathered in nonclinical studies and well-controlled clinical trials that the drug candidate is safe and effective for the disease it is intended to treat and that the manufacturing facilities, processes and controls for the manufacture of the drug candidate are adequate. The FDA and ex-U.S. regulatory authorities have substantial discretion in deciding whether or not a drug candidate should be granted approval based on the benefits and risks of the drug candidate in the treatment of a particular disease, and could delay, limit or deny regulatory approval. If regulatory delays are significant or regulatory approval is limited or denied altogether, our financial results and the commercial prospects for the drug candidate involved will be harmed.
Regulatory Compliance
Our marketing of pharmaceutical products is subject to extensive and complex laws and regulations. We have a corporate compliance program designed to actively identify, prevent and mitigate risk through the implementation of compliance policies and systems and through the promotion of a culture of compliance. Among other laws, regulations and standards, we are subject to various U.S. federal and state laws, and comparable laws in other jurisdictions, pertaining to health care fraud and abuse, including anti-kickback and false claims laws, and laws prohibiting the promotion of drugs for unapproved or off-label uses. Anti-kickback laws generally make it illegal for a prescription drug manufacturer to knowingly and willfully solicit, offer, receive or pay any remuneration in return for or to induce the referral of business, including the purchase or prescription of a particular drug that is reimbursed by a state or federal health care program. False claims laws prohibit anyone from knowingly or willfully presenting for payment to third-party payors, including Medicare and Medicaid, claims for reimbursed drugs or services that are false or fraudulent, claims for items or services not provided as claimed, or claims for medically unnecessary items or services. We are subject to laws and regulations that regulate the sales and marketing practices of pharmaceutical manufacturers, as well as laws such as the U.S. Foreign Corrupt Practices Act, which govern our international business practices with respect to payments to government officials. In addition, we are subject to various data protection and privacy laws and regulations in the U.S., E.U., U.K., Canada, Australia and other jurisdictions. We expect to continue to devote substantial resources to maintain, administer and expand these compliance programs globally.
Reimbursement
Sales of our products depend, to a large degree, on the extent to which our products are reimbursed by third-party payors, such as government health programs, commercial insurance and managed health care organizations. We dedicate substantial management and other resources in order to obtain and maintain appropriate levels of reimbursement for our products from third-party payors, including governmental organizations in the U.S. and ex-U.S. markets.
In the U.S., we have worked successfully with third party payors in order to promptly obtain appropriate levels of reimbursement for our CF medicines. We plan to continue to engage in discussions with numerous commercial insurers and managed health care organizations, along with government health programs that are typically managed by authorities in the individual states, to ensure that payors recognize the significant benefits that our medicines provide by treating the underlying cause of CF and continue to provide access to our medicines.
In Europe and other ex-U.S. markets, we seek government reimbursement for our medicines on a country-by-country basis. This is necessary for each new medicine, as well as label expansions for our current medicines. We successfully obtained reimbursement for KALYDECO in each significant ex-U.S. market within two years of approval, but experienced significant challenges in obtaining reimbursement for ORKAMBI in certain ex-U.S. markets. With the completion of reimbursement discussions in England and France in 2019, we have reimbursement for ORKAMBI or SYMKEVI in most of our significant ex-U.S. markets. In addition, in several ex-U.S. markets, including England, Ireland, Denmark and Australia, our reimbursement agreements include innovative arrangements that provide a pathway to access and rapid reimbursement for certain future CF medicines. For example, our existing reimbursement agreements in England, Ireland, and Denmark have been expanded to include KAFTRIO. We expect to continue to focus significant resources to obtain appropriate reimbursement for our products in ex-U.S. markets.

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Strategic Transactions
Acquisitions
As part of our business strategy, we seek to acquire drugs, drug candidates and other technologies and businesses that have the potential to complement our ongoing research and development efforts. In 2019, we invested significantly in business development transactions designed to augment our pipeline, including the acquisition of Semma Therapeutics, Inc., or Semma, a privately-held company focused on the use of stem cell-derived human islets as a potentially curative treatment for T1D, and Exonics Therapeutics, Inc., or Exonics, a privately-held company focused on creating transformative gene-editing therapies to repair mutations that cause DMD and other severe neuromuscular diseases, including DM1. In the Semma acquisition, we paid approximately $950.0 million in cash to Semma equity holders. In the Exonics acquisition, we paid approximately $245.0 million upfront to Exonics equity holders and agreed to additional payments based upon successful achievement of specified development and regulatory milestones. We expect to continue to identify and evaluate potential acquisitions and may include larger transactions or later stage assets.
Both of our 2019 acquisitions were accounted for as business combinations. As of the acquisition date for each transaction, the cash payments, as well as the fair value of contingent consideration for Exonics, were allocated primarily to goodwill and the fair value of several in-process research and development assets that we acquired. The fair value of contingent consideration related to Exonics was recorded as a liability and continues to be adjusted on a quarterly basis. As a result, these acquisitions are primarily reflected in additional assets and liabilities on our consolidated balance sheet. Operating expenses incurred by Exonics and Semma after the acquisition dates and specific expenses associated with the acquisitions are reflected in our consolidated statement of operations.
Please refer to our critical accounting policies, “Acquisitions,” for further information regarding the significant judgments and estimates related to our acquisitions.
Collaboration and Licensing Arrangements
We enter into arrangements with third parties, including collaboration and licensing arrangements, for the development, manufacture and commercialization of drugs, drug candidates and other technologies that have the potential to complement our ongoing research and development efforts. We expect to continue to identify and evaluate collaboration and licensing opportunities that may be similar to or different from the collaborations and licenses that we have engaged in previously.
In-License Agreements
We have entered into collaborations with biotechnology and pharmaceutical companies in order to acquire rights or to license drug candidates or technologies that enhance our pipeline and/or our research capabilities. Over the last several years, we entered into collaboration agreements with a number of companies, including Affinia, Arbor Biotechnologies, Inc., CRISPR, Kymera Therapeutics, Inc., Moderna, Molecular Templates, Inc. and Skyhawk. Generally, when we in-license a technology or drug candidate, we make upfront payments to the collaborator, assume the costs of the program and/or agree to make contingent payments, which could consist of milestone, royalty and option payments. Most of these collaboration payments are expensed as research and development expenses; however, depending on many factors, including the structure of the collaboration, the significance of the in-licensed drug candidate to the collaborator’s operations and the other activities in which our collaborators are engaged, the accounting for these transactions can vary significantly. Our research and development expenses included $184.6 million in 2020, $318.3 million in 2019 and $111.9 million in 2018 related to upfront and milestone payments pursuant to our collaboration agreements.
Out-License Agreements
We also have out-licensed internally-developed programs to collaborators who are leading the development of these programs. These out-license arrangements include our agreement with Merck KGaA, Darmstadt, Germany, which licensed oncology research and development programs from us in early 2017. Pursuant to these out-licensing arrangements, our collaborators are responsible for the research, development and commercialization costs associated with these programs, and we are entitled to receive contingent milestone and/or royalty payments. As a result, we do not expect to incur significant expenses in connection with these programs and have the potential for future collaborative and royalty revenues resulting from these programs.

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Please refer to Note B, “Collaborative Arrangements,” for further information regarding our in-license agreements and out-license agreements.
Strategic Investments
In connection with our business development activities, we have periodically made equity investments in our collaborators. As of December 31, 2020, we held strategic equity investments in several public companies and certain private companies, and we plan to make additional strategic equity investments in the future. While we invest the majority of our cash, cash equivalents and marketable securities in instruments that meet specific credit quality standards and limit our exposure to any one issue or type of instrument, our strategic investments are maintained and managed separately from our other cash, cash equivalents and marketable securities. Any changes in the fair value of equity investments with readily determinable fair values (including publicly traded securities) are recorded to other income (expense), net in our consolidated statement of operations.
In 2020, 2019 and 2018, we recorded within other income (expense), net gains of $311.9 million, $197.6 million and $2.6 million, respectively, related to changes in the fair value of our strategic investments and from sales of certain investments. As of December 31, 2020, the fair value of our investments in publicly traded companies was $195.8 million. To the extent that we continue to hold strategic investments, particularly strategic investments in publicly traded companies, we will record other income (expense) related to these strategic investments on a quarterly basis. Due to the increased volatility of the global markets, including as a result of COVID-19, and the high volatility of stocks in the biotechnology industry, we expect the value of these strategic investments to fluctuate and that the increases or decreases in the fair value of these strategic investments will continue to have material impacts on our net income (expense) and our profitability on a quarterly and/or annual basis.


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RESULTS OF OPERATIONS
2020/2019
Comparison
2019/2018
Comparison
Increase/(Decrease)
Increase/(Decrease)
202020192018
$
%
$
%
(in thousands, except percentages and per share amounts)
Revenues
$6,205,683 $4,162,821 $3,047,597 $2,042,862 49 %$1,115,224 37 %
Operating costs and expenses
3,349,393 2,965,255 2,412,447 384,138 13 %552,808 23 %
Income from operations
2,856,290 1,197,566 635,150 1,658,724 139 %562,416 89 %
Other non-operating income (expense), net
260,508 197,353 (25,116)63,155 32 %****
Provision for (benefit from) income taxes405,151 218,109 (1,486,862)187,042 86 %****
Net income attributable to Vertex
$2,711,647 $1,176,810 $2,096,896 $1,534,837 130 %$(920,086)**
Net income per diluted share attributable to Vertex common shareholders
$10.29 $4.51 $8.09 
Diluted shares used in per share calculations
263,396 260,673 259,185 
** Not meaningful
Net Income Attributable to Vertex
Our net income attributable to Vertex increased to $2.71 billion in 2020 as compared to $1.18 billion in 2019 primarily due to increased revenues and increased other income (expense) related to our strategic investments partially offset by increased operating costs and expenses and an increased provision for income taxes. The increased revenues were primarily due to the U.S. approval of TRIKAFTA in the fourth quarter of 2019, E.U. approval of KAFTRIO in the third quarter of 2020 and continued uptake of our medicines in ex-U.S. markets. The increased operating costs and expenses were primarily due to increased cost of sales consistent with increased net product revenues, increased investment in research and development and increased sales, general and administrative expenses to support our business.
Net income attributable to Vertex in 2018 included a one-time non-cash benefit from income taxes of $1.56 billion resulting from our release of our valuation allowance. Net income attributable to Vertex decreased in 2019 as compared to 2018 as a result of this one-time tax benefit and increased operating costs and expenses. The increases in operating costs and expenses were primarily due to increased cost of sales due to increased net product revenues and increased research expenses associated with our business development activities. These decreases in our net income in 2019 as compared to 2018 were partially offset by increased net product revenues and increased gains recorded to other income (expense) related to our strategic investments.
Earnings Per Share
In 2020, 2019, and 2018, net income attributable to Vertex was $10.29, $4.51 and $8.09, respectively, per diluted share. In 2018, the benefit from income taxes as a result of the release of our valuation allowance increased net income attributable to Vertex by $6.03 per diluted share.

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Revenues
2020/2019
Comparison
2019/2018
Comparison
Increase/(Decrease)
Increase/(Decrease)
202020192018
$
%
$
%
(in thousands, except percentages)
Product revenues, net
$6,202,783 $4,160,726 $3,038,325 $2,042,057 49 %$1,122,401 37 %
Collaborative and royalty revenues
2,900 2,095 9,272 805 38 %(7,177)(77)%
Total revenues
$6,205,683 $4,162,821 $3,047,597 $2,042,862 49 %$1,115,224 37 %
Product Revenues, Net
202020192018
(in thousands)
TRIKAFTA/KAFTRIO$3,863,824 $420,105 $— 
SYMDEKO/SYMKEVI628,577 1,417,668 768,657 
ORKAMBI907,512 1,331,891 1,262,166 
KALYDECO802,870 991,062 1,007,502 
Product revenues, net
$6,202,783 $4,160,726 $3,038,325 
In 2020, our net product revenues increased by $2.04 billion as compared to 2019. In 2019, our net product revenues increased by $1.12 billion as compared to 2018. The increase in total net product revenues in 2020 was primarily due to the launch of TRIKAFTA in the U.S in the fourth quarter of 2019 and KAFTRIO in the E.U. in the third quarter of 2020. Decreases in revenues for our other products were the result of patients in the U.S. switching from these medicines to TRIKAFTA, partially offset by label expansions and expanded access to our medicines in ex-U.S. markets. The increase in total net product revenues in 2019 was primarily due to the increasing number of patients being treated with SYMDEKO/SYMKEVI, the October 2019 approval of TRIKAFTA in the U.S., label expansions for KALYDECO and ORKAMBI and expanded access to our medicines in ex-U.S. markets. In 2020, 2019 and 2018, our net product revenues included product revenues of $1.4 billion, $1.1 billion and $682.4 million, respectively, from ex-U.S. markets.
We expect that our net product revenues will increase in 2021 due to increasing numbers of people being treated with our medicines as a result of the continued uptake of TRIKAFTA, the approval of KAFTRIO by the European Commission, label expansions for our previously approved products and expanded access to our medicines.
Upon reaching an agreement with the French government for ORKAMBI in the fourth quarter of 2019, including the final amount for ORKAMBI distributed through early access programs, we recognized an adjustment to increase net product revenues related to prior period shipments of ORKAMBI distributed through early access programs of $155.8 million. Please refer to “Critical Accounting Policies - Revenue Recognition” below for a discussion of our accounting treatment for our early access program for ORKAMBI in France.
Collaborative and Royalty Revenues
Our collaborative and royalty revenues were $2.9 million, $2.1 million and $9.3 million in 2020, 2019 and 2018, respectively. Our collaborative revenues have historically fluctuated significantly from one period to another and may continue to fluctuate in the future. Our future royalty revenues will be dependent on if, and when, our collaborators are able to successfully develop drug candidates that we have out-licensed to them.

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Operating Costs and Expenses
2020/2019
Comparison
2019/2018
Comparison
Increase/(Decrease)
Increase/(Decrease)
202020192018
$
%
$
%
(in thousands, except percentages)
Cost of sales
$736,300 $547,758 $409,539 $188,542 34 %$138,219 34 %
Research and development expenses
1,829,537 1,754,540 1,416,476 74,997 %338,064 24 %
Sales, general and administrative expenses
770,456 658,498 557,616 111,958 17 %100,882 18 %
Change in fair value of contingent consideration
13,100 4,459 — 8,641 194 %4,459 **
Restructuring income— — (184)— **184 **
Intangible asset impairment charge— — 29,000 — **(29,000)**
Total costs and expenses
$3,349,393 $2,965,255 $2,412,447 $384,138 13 %$552,808 23 %
** Not meaningful
Cost of Sales
Our cost of sales primarily consists of the third-party royalties payable on our net sales of our products as well as the cost of producing inventories that corresponded to product revenues for the reporting period. Pursuant to our agreement with the Cystic Fibrosis Foundation, or CFF, our tiered third-party royalties on sales of TRIKAFTA/KAFTRIO, SYMDEKO/SYMKEVI, KALYDECO and ORKAMBI, calculated as a percentage of net sales, range from the single digits to the sub-teens, with royalties on sales of TRIKAFTA/KAFTRIO slightly lower than for our other products. Over the last several years, our cost of sales has been increasing due to increased net product revenues. Our cost of sales as a percentage of our net product revenues was approximately 12%, 13%, and 13% for 2020, 2019 and 2018, respectively. In 2021, we expect our total cost of sales will increase due to expected increases in our net product revenues and our cost of sales as a percentage of total net product revenues will be similar to our cost of sales as a percentage of total net product revenues in 2020.
Research and Development Expenses
2020/2019
Comparison
2019/2018
Comparison
Increase/(Decrease)
Increase/(Decrease)
202020192018
$
%
$
%
(in thousands, except percentages)
Research expenses
$636,759 $732,772 $438,360 $(96,013)(13)%$294,412 67 %
Development expenses
1,192,778 1,021,768 978,116 171,010 17 %43,652 %
Total research and development expenses
$1,829,537 $1,754,540 $1,416,476 $74,997 %$338,064 24 %
Our research and development expenses include internal and external costs incurred for research and development of our drugs and drug candidates and expenses related to certain technology that we acquire or license through business development transactions. We do not assign our internal costs, such as salary and benefits, stock-based compensation expense, laboratory supplies and other direct expenses and infrastructure costs, to individual drugs or drug candidates, because the employees within our research and development groups typically are deployed across multiple research and development programs. These internal costs are significantly greater than our external costs, such as the costs of services provided to us by clinical research organizations and other outsourced research, which we allocate by individual program. All research and development costs for our drugs and drug candidates are expensed as incurred.
Over the past three years, we have incurred $5.0 billion in research and development expenses associated with drug discovery and development. The successful development of our drug candidates is highly uncertain and subject to a number of risks. In addition, the duration of clinical trials may vary substantially according to the type, complexity and novelty of the drug candidate and the disease indication being targeted. The FDA and comparable agencies in foreign countries impose substantial requirements on the introduction of therapeutic pharmaceutical products, typically requiring lengthy and detailed laboratory and clinical testing procedures, sampling activities and other costly and time-consuming procedures. Data obtained from nonclinical and clinical activities at any step in the testing process may be adverse and lead to discontinuation or redirection of development activities. Data obtained from these activities also are susceptible to varying interpretations,

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which could delay, limit or prevent regulatory approval. The duration and cost of discovery, nonclinical studies and clinical trials may vary significantly over the life of a project and are difficult to predict. Therefore, accurate and meaningful estimates of the ultimate costs to bring our drug candidates to market are not available.
In 2020, 2019 and 2018, costs related to our CF programs represented the largest portion of our development costs. Any estimates regarding development and regulatory timelines for our drug candidates are highly subjective and subject to change. Until we have data from Phase 3 clinical trials, we cannot make a meaningful estimate regarding when, or if, a clinical development program will generate revenues and cash flows.
Research Expenses
2020/2019
Comparison
2019/2018
Comparison
Increase/(Decrease)
Increase/(Decrease)
202020192018
$
%
$
%
(in thousands, except percentages)
Research Expenses:
Salary and benefits
$129,835 $134,642 $87,773 $(4,807)(4)%$46,869 53 %
Stock-based compensation expense
85,609 69,417 62,925 16,192 23 %6,492 10 %
Outsourced services and other direct expenses
116,182 116,575 89,355 (393)— %27,220 30 %
Collaborative payments
184,600 307,828 111,600 (123,228)(40)%196,228 176 %
Infrastructure costs
120,533 104,310 86,707 16,223 16 %17,603 20 %
Total research expenses
$636,759 $732,772 $438,360 $(96,013)(13)%$294,412 67 %
We expect to continue to invest in our research programs with a focus on identifying drug candidates with the goal of creating transformative medicines for serious diseases. Our total research expenses have historically fluctuated, and are expected to continue to fluctuate, from one period to another due to upfront and milestone payments related to our business development activities that are reflected in the preceding table as collaborative payments. Our research expenses, excluding these collaborative payments, have been increasing over the last several years as we have invested in our pipeline and expanded our cell and genetic therapies capabilities.
Development Expenses
2020/2019
Comparison
2019/2018
Comparison
Increase/(Decrease)
Increase/(Decrease)
202020192018
$
%
$
%
(in thousands, except percentages)
Development Expenses:
Salary and benefits
$295,744 $249,860 $220,128 $45,884 18 %$29,732 14 %
Stock-based compensation expense
177,081 155,141 140,187 21,940 14 %14,954 11 %
Outsourced services and other direct expenses
512,157 425,149 471,338 87,008 20 %(46,189)(10)%
Collaborative payments
— 10,440 250 (10,440)**10,190 **
Infrastructure costs
207,796 181,178 146,213 26,618 15 %34,965 24 %
Total development expenses
$1,192,778 $1,021,768 $978,116 $171,010 17 %$43,652 %
** Not meaningful
Our development expenses increased by $171.0 million, or 17%, in 2020 as compared to 2019 and increased by $43.7 million, or 4%, in 2019 as compared to 2018, primarily due to increased expenses related to our diversifying pipeline, including clinical trials, headcount and infrastructure costs. We expect our development expenses to continue to increase in 2021 as a result of our advancing pipeline.

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Sales, General and Administrative Expenses
2020/2019
Comparison
2019/2018
Comparison
Increase/(Decrease)
Increase/(Decrease)
202020192018
$
%
$
%
(in thousands, except percentages)
Sales, general and administrative expenses
$770,456 $658,498 $557,616 $111,958 17 %$100,882 18 %
Sales, general and administrative expenses increased by 17% in 2020 as compared to 2019, and by 18% in 2019 as compared to 2018, primarily due to increased global support for our medicines, including incremental investment to support the launch of our triple combination regimen and increased support for our CF pipeline products and other disease areas. We expect our sales, general and administrative expenses to continue to increase in 2021.
Contingent Consideration
In 2020 and 2019, the increase in the fair value of contingent consideration potentially payable to Exonics’ former equity holders was $13.1 million and $4.5 million, respectively, primarily due to changes in market interest rates. There were no similar amounts in 2018. In future periods, we expect the fair value of contingent consideration to increase or decrease based on, among other things, our estimates of the probability of achieving and the timing of these contingent development and regulatory milestone payments, as well as the time value of money changes in market interest rates.
Intangible Asset Impairment Charge
In 2018, we recorded a $29.0 million impairment charge related to VX-210 that was licensed from BioAxone Biosciences, Inc., or BioAxone, in 2014. This charge was attributable to non-controlling interest on our consolidated statement of operations because we consolidated BioAxone as a variable interest entity, or VIE, until December 31, 2018. There were no corresponding intangible asset impairment charges in 2020 or 2019.
Other Non-Operating Income (Expense), Net
Interest Income
Interest income increased from $38.4 million in 2018 to $63.7 million in 2019 and decreased to $22.2 million in 2020. The increase in our interest income in 2019 as compared to 2018 was primarily due to increases in our cash equivalents and available-for-sale debt securities and prevailing market interest rates. The decrease in our interest income in 2020 as compared to 2019 was primarily due to a decrease in prevailing market interest rates despite continued increases in our cash equivalents and available-for-sale debt securities. Our future interest income will be dependent on the amount of, and prevailing market interest rates on, our outstanding cash equivalents and available-for-sale debt securities.
Interest Expense
Interest expense was $58.2 million in 2020, $58.5 million in 2019 and $72.5 million in 2018. The majority of our interest expense in these periods was related to imputed interest expense associated with our leased corporate headquarters in Boston and our research site in San Diego. On January 1, 2019, we adopted ASC 842, Leases, which resulted in a reduction in our imputed interest expense associated with these leases in 2020 and 2019. Our future interest expense will be dependent on whether, and to what extent, we borrow amounts under our credit facilities.
Other Income (Expense), Net
In 2020 and 2019, we recorded net other income of $296.4 million and $192.2 million, respectively, primarily related to changes in the fair value of our strategic investments. In 2018, we recorded net other expense of $0.8 million. We expect that due to the volatility of the stock price of biotechnology companies, our other income (expense), net will fluctuate in future periods based on increases or decreases in the fair value of our strategic investments.

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Noncontrolling Interest (VIEs)
In 2018, our $9.8 million net loss attributable to noncontrolling interest reflects BioAxone’s net loss for the reporting period. We deconsolidated BioAxone from our consolidated financial statements as of December 31, 2018 and did not consolidate any VIEs into our consolidated financial statements in 2020 or 2019.
Income Taxes
Our provision for income taxes was $405.2 million for 2020 and $218.1 million for 2019. Our effective tax rate of 13% for 2020 was lower than the U.S. statutory rate primarily due to (i) discrete tax benefits associated with the $209.0 million transfer of intellectual property rights to the U.K., the write-off of a long-term intercompany receivable, and an increase in the U.K.’s corporate tax rate; and (ii) excess tax benefits related to stock-based compensation. The impact of these items was partially offset by a U.S. deemed dividend. Our effective tax rate of 16% for 2019 was lower than the U.S. statutory rate primarily due to excess tax benefits related to stock-based compensation and research and development tax credits.
In 2018, we recorded a benefit from income taxes of $1.5 billion because we released our valuation allowance on the majority of our net operating losses and other deferred tax assets in the fourth quarter of 2018, resulting in a non-cash credit to net income of $1.56 billion. Starting in 2019, we began recording a provision for income taxes on our pre-tax income using an effective tax rate approximating statutory rates. Due to our ability to offset our pre-tax income against previously benefited net operating losses, the majority of our tax provision in 2020 and 2019 represented a non-cash expense. We utilized substantially all of our remaining previously benefited U.S. net operating losses in 2020. As a result, a larger portion of our tax provision will represent a cash tax payable in future periods.

LIQUIDITY AND CAPITAL RESOURCES
The following table summarizes the components of our financial condition as of December 31, 2020 and 2019:
Increase/(Decrease)
20202019
$
%
(in thousands, except percentages)
Cash, cash equivalents and marketable securities
$6,658,897 $3,808,294 $2,850,603 75 %
Working Capital:
Total current assets
$8,133,379 $4,822,829 $3,310,550 69 %
Total current liabilities
(1,877,533)(1,334,827)(542,706)(41)%
Total working capital
$6,255,846 $3,488,002 $2,767,844 79 %
As of December 31, 2020, total working capital was $6.3 billion, which represented an increase of $2.8 billion from $3.5 billion as of December 31, 2019. The increase in total working capital in 2020 was primarily related to $3.3 billion of cash provided by operations partially offset by $539.1 million of cash used to repurchase our common stock pursuant our share repurchase programs and purchases of property and equipment of $259.8 million.
Sources of Liquidity
As of December 31, 2020, we had cash, cash equivalents and marketable securities of $6.7 billion, which represented an increase of $2.9 billion from $3.8 billion as of December 31, 2019. We intend to rely on our existing cash, cash equivalents and marketable securities together with cash flows from product sales as our primary source of liquidity.
We may borrow up to a total of $2.5 billion pursuant to two revolving credit facilities. We may repay and reborrow amounts under these revolving credit agreements without penalty. Subject to certain conditions, we may request that the borrowing capacity for each of the credit agreements be increased by an additional $500.0 million, for a total of $3.5 billion collectively. Other possible sources of future liquidity include commercial debt, public and private offerings of our equity and debt securities, strategic sales of assets or businesses and financial transactions. Negative covenants in our credit agreement may prohibit or limit our ability to access these sources of liquidity. As of December 31, 2020, we were in compliance with these covenants.

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Future Capital Requirements
We have significant future capital requirements including:
significant expected operating expenses to conduct research and development activities and to operate our organization; and
substantial facility and finance lease obligations.
In addition:
We have entered into certain collaboration agreements with third parties that include the funding of certain research, development and commercialization efforts. Certain of our business development transactions, including collaborations and acquisitions, include the potential for future milestone and royalty payments by us upon the achievement of pre-established developmental and regulatory targets and/or commercial targets. We may enter into additional business development transactions, including acquisitions, collaborations and equity investments, that require additional capital.
To the extent we borrow amounts under the credit agreements we entered into in 2020 and 2019, we would be required to repay any outstanding principal amounts in 2022 or 2024, respectively.
As of December 31, 2020, $424.9 million remained available to fund repurchases under the 2020 Share Repurchase Program that we announced in November 2020.
We expect that cash flows from our products together with our current cash, cash equivalents and marketable securities will be sufficient to fund our operations for at least the next twelve months and do not expect COVID-19 to have an adverse effect on our liquidity. The adequacy of our available funds to meet our future operating and capital requirements will depend on many factors, including the amounts of future revenues generated by our products, and the potential introduction of one or more of our other drug candidates to the market, the level of our business development activities and the number, breadth, cost and prospects of our research and development programs.
Financing Strategy
We may raise additional capital by borrowing under credit agreements, through public offerings or private placements of our securities or securing new collaborative agreements or other methods of financing. We will continue to manage our capital structure and will consider all financing opportunities, whenever they may occur, that could strengthen our long-term liquidity profile. There can be no assurance that any such financing opportunities will be available on acceptable terms, if at all.

CONTRACTUAL COMMITMENTS AND OBLIGATIONS
The following table sets forth our commitments and obligations as of December 31, 2020:
Payments Due by Period
20212022-20232024-20252026 and laterTotal
(in thousands)
Fan Pier Leases$66,540 $145,177 $155,942 $233,913 $601,572 
Finance leases, excluding Fan Pier Leases18,930 33,028 30,913 182,542 265,413 
Operating leases15,266 68,782 65,677 320,684 470,409 
Research and development costs66,955 1,724 — — 68,679 
Total contractual commitments and obligations
$167,691 $248,711 $252,532 $737,139 $1,406,073 
Leases
We lease two buildings that are located at Fan Pier in Boston, Massachusetts. We commenced lease payments on these two buildings in December 2013 and the initial lease periods end in December 2028. We also lease office and laboratory

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space in San Diego, California. We commenced lease payments for this building in the second quarter of 2019 pursuant to an initial 16 year lease term. The future minimum rental payments that we are obligated to pay related to the San Diego building are included in “Finance leases, excluding Fan Pier Leases,” which also reflects leases of equipment and a land lease. The remainder of our real estate leases are reflected in “Operating leases” in the table above, including office and laboratory space at our Cell and Genetic Therapies facility near our corporate headquarters. Base rent payments will commence for this building in the fourth quarter of 2021 pursuant to an initial 15 year lease term.
Research and Development Costs
“Research and development costs” included in the table above primarily relate to pharmaceutical materials to be utilized in our clinical trials and research costs related to our advancing pipeline. The amounts reflected in “Research and development costs” do not include certain payments we anticipate making to clinical research organizations, or CROs, because these contracts are cancelable, at our option, with notice. However, we historically have not cancelled such contracts. As of December 31, 2020, we had accrued $42.8 million related to these contracts for costs incurred for services provided through December 31, 2020, and we have approximately $237.6 million in cancelable future commitments based on existing contracts as of December 31, 2020. These amounts reflect planned expenditures based on existing contracts and do not reflect any future modifications to, or terminations of, existing contracts or anticipated or potential new contracts.
Collaborative Arrangements and Asset Acquisitions
We have entered into certain research and development collaboration agreements with third parties and acquired certain assets that include the funding of certain development, manufacturing and commercialization efforts with the potential for future milestone and royalty payments by us upon the achievement of pre-established developmental, regulatory and/or commercial targets. Our obligation to fund these efforts is contingent upon continued involvement in the programs and/or the lack of any adverse events that could cause the discontinuance of the programs. These payments, which are not included in the contractual obligations table above, include:
CFF: We pay royalties, which are included in cost of sales, to CFF on sales of our CF products.
Research and Development Milestones: The majority of our in-license agreements and our acquisitions have milestone and royalty payments payable by us upon the successful achievement of pre-established developmental, regulatory and/or commercial targets or net sales. Contingent payments under these agreements become due and payable only upon achievement of certain milestones.
Tax-related Obligations
We exclude liabilities pertaining to uncertain tax positions from our summary of contractual obligations as we cannot make a reliable estimate of the period of cash settlement with the respective taxing authorities. As of December 31, 2020, our liabilities associated with uncertain tax positions were $86.6 million.
Other Funding Commitments
Our table detailing contractual commitments and obligations does not include severance payment obligations to certain of our executive officers in the event of a not-for-cause employment termination under existing employment contracts. We will provide information regarding these obligations annually in our proxy statement for our annual meeting of shareholders.


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CRITICAL ACCOUNTING POLICIES AND ESTIMATES
Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements prepared in accordance with generally accepted accounting principles in the U.S. The preparation of these financial statements requires us to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reported periods. These items are monitored and analyzed by management for changes in facts and circumstances, and material changes in these estimates could occur in the future. Changes in estimates are reflected in reported results for the period in which the change occurs. We base our estimates on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from our estimates if past experience or other assumptions do not turn out to be substantially accurate.
We believe that our application of the following accounting policies, each of which requires significant judgments and estimates on the part of management, are the most critical to aid in fully understanding and evaluating our reported financial results:
revenue recognition;
acquisitions, including intangible assets, goodwill and contingent consideration; and
income taxes.
Our accounting policies, including the ones discussed below, are more fully described in the Notes to our consolidated financial statements, including Note A, “Nature of Business and Accounting Policies,” included in this Annual Report on Form 10-K.
Revenue Recognition
Product Revenues, Net
We generate product revenues from sales in the U.S. and in international markets. We sell our products principally to a limited number of specialty pharmacy and specialty distributors in the U.S., which account for the largest portion of our total revenues, and make international sales primarily to specialty distributors and retail chains, as well as hospitals and clinics, many of which are government-owned or supported customers, collectively, our customers. Our customers in the U.S. subsequently resell our products to patients and health care providers. We contract with government agencies so that our products will be eligible for purchase by, or partial or full reimbursement from, such third-party payors. We recognize net product revenues from sales of our products when our customers obtain control of our products, which typically occurs upon delivery to our customers. Revenues from our product sales are recorded at the net sales price, or “transaction price,” which requires us to make several significant estimates regarding the net sales price.
The most significant estimate we are required to make is related to government and private payor rebates, chargebacks, discounts and fees, collectively rebates. The value of the rebates provided to third-party payors per course of treatment vary significantly and are based on government-mandated discounts and our arrangements with other third-party payors. In order to estimate our total rebates, we estimate the percentage of prescriptions that will be covered by each third-party payor, which is referred to as the payor mix. We track available information regarding changes, if any, to the payor mix for our products, to our contractual terms with third-party payors and to applicable governmental programs and regulations and levels of our products in the distribution channel. We adjust our estimated rebates based on new information, including information regarding actual rebates for our products, as it becomes available. Claims by third-party payors for rebates are submitted to us significantly after the related sales, potentially resulting in adjustments in the period in which the new information becomes known. Our credits to revenue related to prior period sales, excluding the adjustment to the transaction price for ORKAMBI distributed through early access programs in France in 2019, have not been significant (typically less than 1% of gross product revenues) and primarily related to U.S. rebates.

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The following table summarizes activity related to our accruals for rebates (including our refund liability to the French government related to ORKAMBI distributed through early access programs in France as described below) for the three years ended December 31, 2020:
(in thousands)
Balance as of December 31, 2017$112,215 
Provision related to 2018 sales and the adoption of ASC 606684,299 
Adjustments related to prior year(s) sales
(22,099)
Credits/payments made
(229,361)
Balance as of December 31, 2018$545,054 
Provision related to 2019 sales655,980 
Adjustments related to prior year(s) sales
(95,480)
Credits/payments made
(469,832)
Balance as of December 31, 2019$635,722 
Provision related to 2020 sales1,284,068 
Adjustments related to prior year(s) sales
631 
Credits/payments made
(1,144,832)
Balance as of December 31, 2020$775,589 
We have also entered into annual contracts with government-owned and supported customers in international markets that limit the amount of annual reimbursement we can receive. Upon exceeding the annual reimbursement amount, products are provided free of charge, which is a material right. We defer a portion of the consideration received, which includes upfront payments and fees, for shipments made up to the annual reimbursement limit as “Other current liabilities.” The deferred amount is recognized as revenue when the free products are shipped. In order to estimate the portion of the consideration received to recognize as revenue and the portion of the amount to defer, we rely on our forecast of the number of units we will distribute during the applicable annual period in each international market in which our contracts with government-owned and supported customers limit the amount of annual reimbursement we can receive. Our forecasts are based on, among other things, our historical experience.
The preceding estimates and judgments materially affect our recognition of net product revenues. Changes in our estimates of net product revenues could have a material effect on net product revenues recorded in the period in which we determine that change occurs.
French Early Access Programs
In 2015, we began distributing ORKAMBI through early access programs in France and remained engaged in reimbursement discussions with the French government for ORKAMBI, including ORKAMBI distributed through early access programs, until November 2019, when we reached an agreement with the French government. From the time we began distributing ORKAMBI through early access programs in France, we expected that the difference between the amounts collected based on the invoiced amount and the final amount for ORKAMBI distributed through these programs would be returned to the French government. Our refund liability related to the early access programs in France was classified in “Accrued expenses” on our consolidated balance sheets.
From the first quarter of 2018 through the third quarter of 2019, we recognized net product revenues for ORKAMBI sales in France under the early access programs based on a transaction price that reflected our estimate of consideration we expected to retain that would not be subject to a significant reversal in amounts recognized, which resulted in revenue representing a portion of the invoiced amount.
Upon reaching an agreement with the French government for ORKAMBI, including the final amount for ORKAMBI distributed through early access programs in France in the fourth quarter of 2019, we updated the transaction price related to ORKAMBI distributed through early access programs and recognized net product revenues of $155.8 million related to these shipments, which occurred from 2015 through the date of our agreement with the French government, because the final amount for these shipments exceeded our previous estimate.

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Acquisitions
We are required to make several significant judgments and estimates in order to calculate the purchase price for our business combinations and then allocate it to the assets that we have acquired and the liabilities that we have assumed on our consolidated balance sheet. The most significant judgments and estimates relate to the fair value of the in-process research and development assets and contingent consideration liabilities related to these business combinations. Based on these judgments and estimates, the fair value of the goodwill that we record as a result of these business combinations may be material. Once recorded, these assets are subject to quarterly impairment analysis and our contingent consideration liability is adjusted quarterly, which requires similar judgments and estimates.
Intangible Assets
In 2019, we recorded in-process research and development assets related to our acquisitions of Exonics and Semma totaling $400.0 million on our consolidated balance sheet, which remained on our consolidated balance sheet as of December 31, 2020. Each of these assets is accounted for as an indefinite-lived intangible asset and is maintained on our consolidated balance sheet until either the project underlying it is completed or the asset becomes impaired. When we determine that an asset has become impaired or we abandon a project, we write down the carrying value of the related intangible asset to its fair value and record an impairment charge in the period in which the impairment occurs. In 2018, we recorded a full impairment charge of $29.0 million for the in-process research and development asset that had previously been recorded on our consolidated balance sheets related to our collaboration with BioAxone.
To determine the fair value of our in-process research and development assets, we utilize the multi-period excess earnings method of the income approach, which requires us to make estimates of the probability of technical and regulatory success, development cost assumptions, revenue projections and growth rates, commercial cost estimates and appropriate discount rates. These assumptions require significant management judgment and reasonable changes in the assumptions can cause material changes to the fair value of the intangible assets. Due to the early stage of Exonics and Semma’s programs, these significant assumptions could be affected by future economic and market conditions.
Contingent Consideration
As of December 31, 2020 and 2019, we had $189.6 million and $176.5 million, respectively, of liabilities on our consolidated balance sheet attributable to the fair value of the contingent development and regulatory payments that we may owe to Exonics’ former equity holders upon the achievement of certain events. Our acquisition of Semma in 2019 did not include similar contingent payments; therefore, we are not required to record contingent consideration liabilities related to our acquisition of Semma.
We record an increase or a decrease in the fair value of the contingent consideration liability on our consolidated balance sheet and in our consolidated statement of operations on a quarterly basis. We determine the fair value of our contingent consideration liability using a probability weighted discounted cash flow method of the income approach, which requires us to make estimates of the timing of regulatory and commercial milestone achievement and the corresponding estimated probability of technical and regulatory success rates. Significant judgment is used in determining the appropriateness of these assumptions during each reporting period. Reasonable changes in these assumptions can cause material changes to the fair value of our contingent consideration liability. Due to the early stage of Exonics’ DMD and DM1 programs, these significant assumptions could be affected by future economic and market conditions.
Goodwill
In 2020, we did not have any business combinations; therefore, we did not record any additional goodwill on our consolidated balance sheet. In 2019, we recorded goodwill of $554.6 million and $397.1 million related to our acquisitions of Semma and Exonics, respectively. Goodwill reflects the difference between the fair value of the consideration transferred and the fair value of the net assets acquired. Thus, the goodwill that we record is dependent on the significant judgments and estimates inherent in the fair value of our in-process research and development assets and contingent consideration liabilities.
Income Taxes
We utilize the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial statement carrying amounts and tax basis of assets and liabilities using enacted tax rates in effect for years in which the temporary differences are expected to reverse. If our estimate

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of the tax effect of reversing temporary differences is (i) not reflective of actual outcomes, (ii) modified to reflect new developments or interpretations of the tax law, or (iii) revised to incorporate new accounting principles, or changes in the expected timing or manner of the reversal, our results of operations could be materially impacted.
We are engaged in research and development activities and incurred significant net operating losses for a number of years before recently becoming profitable. Accordingly, we did not report any tax benefits relating to our net operating loss carryforwards and income tax credit carryforwards that were available for utilization in future periods because we maintained a valuation allowance on the majority of our net operating losses and other deferred tax assets until December 31, 2018. We released the valuation allowance on the majority of our net operating losses and other deferred tax assets resulting in a non-cash benefit from income taxes of $1.56 billion in the fourth quarter of 2018.
We provide a valuation allowance when it is more likely than not that deferred tax assets will not be realized. On a periodic basis, we reassess our valuation allowances on our deferred tax assets, weighing positive and negative evidence to assess the recoverability of the deferred tax assets. In the fourth quarter of 2018, we reassessed our valuation allowances and considered positive evidence including significant cumulative consolidated and U.S. income over the three years ended December 31, 2018, revenue growth, clinical program progression, including the advancement and clinical trial data from our triple combination regimens, and expectations regarding future profitability, and negative evidence, including potential impact of competition on our projections and cumulative losses in the jurisdictions. After assessing both the positive evidence and the negative evidence, we released the valuation allowance on the majority of our net operating losses and other deferred tax assets as of December 31, 2018.
Significant judgment is required in making these assessments to maintain or reverse our valuation allowances and, to the extent our future expectations change we would have to assess the recoverability of these deferred tax assets at that time. The determination to release the majority of our valuation allowances increased our net income by $1.56 billion, or $6.03 per share in 2018.

RECENT ACCOUNTING PRONOUNCEMENTS
Refer to Note A, “Nature of Business and Accounting Policies,” in the accompanying notes to the consolidated financial statements for a discussion of recent accounting pronouncements and new accounting pronouncements adopted during 2020.

ITEM 7A.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
As part of our investment portfolio, we own financial instruments that are sensitive to market risks. The investment portfolio is used to preserve our capital. None of these market risk-sensitive instruments are held for trading purposes. We do not have derivative financial instruments in our investment portfolio.
Interest Rate Risk
We invest our cash in a variety of financial instruments, principally securities issued by the U.S. government and its agencies, investment-grade corporate bonds and commercial paper, and money market funds. These investments are denominated in U.S. Dollars. All of our interest-bearing securities are subject to interest rate risk and could decline in value if interest rates fluctuate, including potential fluctuations as a result of COVID-19. Substantially all of our investment portfolio consists of marketable securities with active secondary or resale markets to help ensure portfolio liquidity, and we have implemented guidelines limiting the term-to-maturity of our investment instruments. Due to the conservative nature of these instruments, we do not believe that we have a material exposure to interest rate risk. If interest rates were to increase or decrease by 1%, the fair value of our investment portfolio would increase or decrease by an immaterial amount.
We entered into a credit agreement in each of 2020 and 2019. Loans under these credit agreements bear interest, at our option, at either a base rate or a Eurocurrency rate, in each case plus an applicable margin based on our consolidated leverage ratio (the ratio of our total consolidated funded indebtedness to our consolidated EBITDA for the most recently completed four fiscal quarter period). Pursuant to the credit agreement that we entered into in 2019, the applicable margin on base rate loans ranges from 0.125% to 0.500% and the applicable margin on Eurocurrency loans ranges from 1.125% to 1.500%. Pursuant to the credit agreement that we entered into in 2020, the applicable margin on base rate loans ranges from 0.500% to 0.875% and the applicable margin on Eurocurrency loans ranges from 1.500% to 1.875%. We do not believe that changes in interest rates related to either credit agreement would have a material effect on our consolidated financial statements. As

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of December 31, 2020, we had no principal or interest outstanding under either of our existing credit facilities. A portion of our “Interest expense” in 2021 will be dependent on whether, and to what extent, we borrow amounts under these existing facilities.
Foreign Exchange Market Risk
As a result of our foreign operations, we face exposure to movements in foreign currency exchange rates, primarily the Euro and British Pound against the U.S. Dollar. Fluctuations in the global markets, including as a result of COVID-19, may have a positive or negative effect on our foreign exchange rate exposure. The current exposures arise primarily from cash, accounts receivable, intercompany receivables and payables, payables and accruals and inventories. Both positive and negative effects to our net revenues from international product sales from movements in exchange rates are partially mitigated by the natural, opposite effect that exchange rates have on our international operating costs and expenses.
We have a foreign currency management program with the objective of reducing the effect of exchange rate fluctuations on our operating results and forecasted revenues and expenses denominated in foreign currencies. We currently have cash flow hedges for the Euro, British Pound, Canadian Dollar and Australian Dollar related to a portion of our forecasted product revenues that qualify for hedge accounting treatment under U.S. GAAP. We do not seek hedge accounting treatment for our foreign currency forward contracts related to monetary assets and liabilities that impact our operating results. As of December 31, 2020, we held foreign exchange forward contracts that were designated as cash flow hedges with notional amounts totaling $1.1 billion representing a net liability of $63.5 million recorded on our consolidated balance sheet.
Although not predictive in nature, we believe a hypothetical 10% threshold reflects a reasonably possible near-term change in exchange rates. Assuming that the December 31, 2020 exchange rates were to change by a hypothetical 10%, the fair value recorded on our consolidated balance sheet related to our foreign exchange forward contracts that were designated as cash flow hedges as of December 31, 2020 would change by approximately $109.2 million. However, since these contracts hedge a specific portion of our forecasted product revenues denominated in certain foreign currencies, any change in the fair value of these contracts is recorded in “Accumulated other comprehensive loss” on our consolidated balance sheet and is reclassified to earnings in the same periods during which the underlying product revenues affect earnings. Therefore, any change in the fair value of these contracts that would result from a hypothetical 10% change in exchange rates would be entirely offset by the change in value associated with the underlying hedged product revenues resulting in no impact on our future anticipated earnings and cash flows with respect to the hedged portion of our forecasted product revenues.
Equity Price Risk
Information required by this section is incorporated by reference from the discussion in the “Strategic Investments” section of this Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

ITEM 8.FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
The information required by this Item 8 is contained on pages F-1 through F-49 of this Annual Report on Form 10-K.

ITEM 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
Not applicable.


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ITEM 9A.CONTROLS AND PROCEDURES
(1) Evaluation of Disclosure Controls and Procedures. The Company’s chief executive officer and chief financial officer, after evaluating the effectiveness of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) and Rule 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended) as of the end of the period covered by this Annual Report on Form 10-K, have concluded that, based on such evaluation, the Company’s disclosure controls and procedures were effective. In designing and evaluating the disclosure controls and procedures, the Company’s management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and the Company’s management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.
(2) Management’s Annual Report on Internal Control Over Financial Reporting. The management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) and Rule 15d-15(f) promulgated under the Securities Exchange Act of 1934, as amended, as a process designed by, or under the supervision of, the Company’s principal executive and principal financial officers and effected by the Company’s board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. The Company’s internal control over financial reporting includes those policies and procedures that:
•    pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company;
•    provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and
•    provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
The Company’s management assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 2020. In making this assessment, it used the criteria set forth in the Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on its assessment, the Company’s management has concluded that, as of December 31, 2020, the Company’s internal control over financial reporting is effective based on those criteria.
The Company’s independent registered public accounting firm, Ernst & Young LLP, issued an attestation report on the Company’s internal control over financial reporting. See Section 4 below.
(3) Changes in Internal Controls. During the quarter ended December 31, 2020, there were no changes in the Company’s internal control over financial reporting that materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

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(4) Report of Independent Registered Public Accounting Firm
To the Shareholders and the Board of Directors of Vertex Pharmaceuticals Incorporated
Opinion on Internal Control over Financial Reporting
We have audited Vertex Pharmaceuticals Incorporated’s internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Vertex Pharmaceuticals Incorporated (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on the COSO criteria.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the 2020 consolidated financial statements of the Company and our report dated February 11, 2021, expressed an unqualified opinion thereon.
Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.
Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
/s/ Ernst & Young LLP
Boston, Massachusetts
February 11, 2021


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ITEM 9B. OTHER INFORMATION
Michael Parini, one of our current executive officers, has informed us that he will be leaving his position at our company effective March 1, 2021.
Stuart Arbuckle, one of our current executive officers, will assume additional responsibilities and be appointed to the position of EVP and Chief Commercial and Operations Officer, effective March 1, 2021.
Additional information regarding Mr. Arbuckle and Mr. Parini is provided in Part I, Item 1 of this Annual Report on Form 10-K.

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PART III
Portions of our definitive Proxy Statement for the 2021 Annual Meeting of Shareholders, or 2021 Proxy Statement, are incorporated by reference into this Part III of our Annual Report on Form 10-K.

ITEM 10.DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
The information regarding directors required by this Item 10 will be included in our 2021 Proxy Statement and is incorporated herein by reference. We expect this information to be provided under “Election of Directors,” “Corporate Governance and Risk Management,” “Shareholder Proposals for the 2021 Annual Meeting and Nominations for Director,” “Delinquent Section 16(a) Reports” and “Code of Conduct.” The information regarding executive officers required by this Item 10 is included in Part I of this Annual Report on Form 10-K.

ITEM 11.EXECUTIVE COMPENSATION
The information required by this Item 11 will be included in the 2021 Proxy Statement and is incorporated herein by reference. We expect this information to be provided under “Compensation Committee Interlocks and Insider Participation,” “Compensation Discussion and Analysis,” “Compensation and Equity Tables,” “Director Compensation,” “Management Development and Compensation Committee Report” and/or “Corporate Governance and Risk Management.”

ITEM 12.SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
The information required by this Item 12 will be included in the 2021 Proxy Statement and is incorporated herein by reference. We expect this information to be provided under “Security Ownership of Certain Beneficial Owners and Management” and “Equity Compensation Plan Information.”

ITEM 13.CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
The information required by this Item 13 will be included in the 2021 Proxy Statement and is incorporated herein by reference. We expect this information to be provided under “Election of Directors,” “Corporate Governance and Risk Management,” and “Audit and Finance Committee.”

ITEM 14.PRINCIPAL ACCOUNTANT FEES AND SERVICES
The information required by this Item 14 will be included in the 2021 Proxy Statement and is incorporated herein by reference. We expect this information to be provided under “Ratification of the Appointment of Independent Registered Public Accounting Firm.”


80


PART IV

ITEM 15.EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a)(1) The Financial Statements required to be filed by Items 8 and 15(c) of Form 10-K, and filed herewith, are as follows:
Page Number in
this Form 10-K
Report of Independent Registered Public Accounting Firm
F-1
Consolidated Statements of Operations for the years ended December 31, 2020, 2019 and 2018
F-3
Consolidated Statements of Comprehensive Income for the years ended December 31, 2020, 2019 and 2018
F-4
Consolidated Balance Sheets as of December 31, 2020 and 2019
F-5
Consolidated Statements of Shareholders’ Equity and Noncontrolling Interest for the years ended December 31, 2020, 2019 and 2018
F-6
Consolidated Statements of Cash Flows for the years ended December 31, 2020, 2019 and 2018
F-7
Notes to Consolidated Financial Statements
F-8
(a)(2) Financial Statement Schedules have been omitted because they are either not applicable or the required information is included in the consolidated financial statements or notes thereto listed in (a)(1) above.
(a)(3) Exhibits.
The following is a list of exhibits filed as part of this Annual Report on Form 10-K.
Exhibit Number
Exhibit Description
Filed with
this report
Incorporated by
Reference herein
from—Form
or Schedule
Filing Date/
Period Covered
SEC File/Reg.
Number
Plan of Acquisition
2.110-Q
(Exhibit 2.1)
October 31, 2019000-19319
2.210-Q
(Exhibit 10.1)
August 1, 2019000-19319
Governance Documents
3.110-Q
(Exhibit 3.1)
July 26, 2018000-19319
3.210-Q
(Exhibit 3.2)
May 1, 2020000-19319
Stock Certificate
4.110-K
(Exhibit 4.1)
February 15, 2018000-19319
4.210-K (Exhibit 4.2)February 13, 2020000-19319
Collaboration Agreement
10.110-Q/A
(Exhibit 10.2)
August 19, 2011000-19319
10.210-K
(Exhibit 10.9)
March 16, 2006000-19319
10.310-Q/A
(Exhibit 10.6)
August 19, 2011000-19319

81


Exhibit Number
Exhibit Description
Filed with
this report
Incorporated by
Reference herein
from—Form
or Schedule
Filing Date/
Period Covered
SEC File/Reg.
Number
10.410-Q
(Exhibit 10.3)
August 9, 2011000-19319
10.510-K
(Exhibit 10.05)
February 23, 2017000-19319
10.6X
Leases
10.710-Q
(Exhibit 10.4)
August 9, 2011000-19319
10.810-Q
(Exhibit 10.5)
August 9, 2011000-19319
Financing Agreements
10.910-Q
(Exhibit 10.1)
October 31, 2019000-19319
10.10X
10.1110-Q (Exhibit 10.1)October 30, 2020000-19319
Equity Plans
10.1210-Q
(Exhibit 10.1)
October 25, 2018000-19319
10.138-K
(Exhibit 10.2)
May 15, 2006000-19319
10.1410-K
(Exhibit 10.20)
February 13, 2015000-19319
10.15DEF 14A
(Appendix A)
April 26, 2019000-19319
10.1610-K
(Exhibit 10.17)
February 13, 2015000-19319
10.1710-K
(Exhibit 10.18)
February 13, 2015000-19319
10.1810-K
(Exhibit 10.25)
February 16, 2016000-19319
10.1910-K
(Exhibit 10.19)
February 13, 2015000-19319
10.2010-K (Exhibit 10.17)February 13, 2020000-19319
10.2110-K
(Exhibit 10.27)
February 16, 2016000-19319
10.22DEF 14A
(Appendix B)
April 26, 2019000-19319
Agreements with Executive Officers and Directors
10.238-K
(Exhibit 10.1)
April 1, 2020000-19319
10.2410-K
(Exhibit 10.35)
February 22, 2012000-19319
10.258-K
(Exhibit 10.1)
July 25, 2019000-19319
10.268-K
(Exhibit 10.2)
July 25, 2019000-19319

82


Exhibit Number
Exhibit Description
Filed with
this report
Incorporated by
Reference herein
from—Form
or Schedule
Filing Date/
Period Covered
SEC File/Reg.
Number
10.2710-Q
(Exhibit 10.1)
November 6, 2012000-19319
10.2810-Q
(Exhibit 10.2)
November 6, 2012000-19319
10.2910-K
(Exhibit 10.34)
February 16, 2016000-19319
10.3010-K
(Exhibit 10.35)
February 16, 2016000-19319
10.3110-K
(Exhibit 10.40)
February 23, 2017000-19319
10.3210-K
(Exhibit 10.41)
February 23, 2017000-19319
10.3310-K
(Exhibit 10.42)
February 23, 2017000-19319
10.3410-K
(Exhibit 10.43)
February 23, 2017000-19319
10.3510-Q
(Exhibit 10.1)
May 1, 2019000-19319
10.3610-Q
(Exhibit 10.2)
May 1, 2019000-19319
10.3710-K (Exhibit 10.35)February 13, 2020000-19319
10.3810-Q (Exhibit 10.13)November 4, 2009000-19319
10.3910-K (Exhibit 10.66)February 17, 2009000-19319
10.4010-K
(Exhibit 10.46)
February 15, 2018000-19319
10.41X
Subsidiaries
21.1X
Consent
23.1X
Certifications
31.1X
31.2X
32.1X
101.INSXBRL InstanceX
101.SCHXBRL Taxonomy Extension SchemaX
101.CALXBRL Taxonomy Extension CalculationX
101.LABXBRL Taxonomy Extension LabelsX
101.PREXBRL Taxonomy Extension PresentationX
101.DEFXBRL Taxonomy Extension DefinitionX
104Cover Page Interactive Data File––the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.X
*    Management contract, compensatory plan or agreement.
†    Confidential portions of this document have been redacted according to the applicable rules.

83


ITEM 16.FORM 10-K SUMMARY
Not applicable.


84


SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Vertex Pharmaceuticals Incorporated
February 11, 2021
By:
/s/ Reshma Kewalramani
Reshma Kewalramani
Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
Name
Title
Date
/s/ Reshma Kewalramani
Reshma Kewalramani
President, Chief Executive Officer and Director (Principal Executive Officer)February 11, 2021
/s/ Charles F. Wagner, Jr.
Charles F. Wagner, Jr.
Executive Vice President and Chief Financial Officer (Principal Financial Officer)February 11, 2021
/s/ Paul M. Silva
Paul M. Silva
Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)February 11, 2021
/s/Jeffrey M. Leiden
Jeffrey M. LeidenExecutive ChairmanFebruary 11, 2021
/s/ Sangeeta N. Bhatia
Sangeeta N. Bhatia
DirectorFebruary 11, 2021
/s/ Lloyd Carney
Lloyd Carney
Director
February 11, 2021
/s/ Alan Garber
Alan Garber
DirectorFebruary 11, 2021
/s/ Terrence C. Kearney
Terrence C. Kearney
DirectorFebruary 11, 2021
/s/ Yuchun Lee
Yuchun Lee
DirectorFebruary 11, 2021
/s/ Margaret G. McGlynn
Margaret G. McGlynn
DirectorFebruary 11, 2021
/s/ Diana McKenzie
Diana McKenzie
DirectorFebruary 11, 2021
/s/ Bruce I. Sachs
Bruce I. Sachs
DirectorFebruary 11, 2021

85


Report of Independent Registered Public Accounting Firm
To the Shareholders and the Board of Vertex Pharmaceuticals Incorporated
Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of Vertex Pharmaceuticals Incorporated (the Company) as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, shareholders’ equity and noncontrolling interest, and cash flows for each of the three years in the period ended December 31, 2020, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with U.S. generally accepted accounting principles.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated February 11, 2021, expressed an unqualified opinion thereon.
Adoption of New Accounting Standard
ASU No. 2016-02
As discussed in Note A to the consolidated financial statements, the Company changed its method for lease accounting as a result of the adoption of ASU No. 2016-02, Leases (Topic 842), and the related amendments effective January 1, 2019.
Basis for Opinion
These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
Critical Audit Matter
The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.
F-1


Revenue recognition - Payor Mix Impact on Measuring Variable Consideration
Description of the Matter
As discussed in Note A to the Company’s consolidated financial statements, the Company records product sales at the net sales price, or “transaction price,” which requires the Company to make several significant estimates regarding the net sales price. The most significant estimates relate to government rebates, chargebacks, discounts and fees, collectively rebates. Due to the delay in receipt of claims by third-party payors, the Company estimates the percentage of prescriptions that will be covered by each third-party payor, which is referred to as the payor mix. Rebate accruals inclusive of estimated amounts due for claims not yet received or processed are recorded within accrued expenses on the Company’s consolidated balance sheet.
Auditing the measurement of the Company’s net product revenues was especially complex and judgmental due to the significant estimation required in determining the amount of consideration that will be collected net of estimates for payor rebates. In particular, the net sales price is affected by assumptions in payor behavior such as changes in payor mix, payor collections, current customer contractual requirements, and experience with ultimate collection from third-party payors.
How We Addressed the Matter in Our Audit
We obtained an understanding, evaluated the design and tested the operating effectiveness of controls over the Company’s revenue recognition process, including controls over the underlying assumptions and inputs used by management to estimate amounts due to third-party payors and the completeness and accuracy of the data used in the estimates. We also tested the Company’s controls to assess the completeness and accuracy of the current and historical data that supports the estimate.
Our audit procedures to test the Company’s recognition of net product revenues included, among others, assessing the methodology used to determine the estimate and testing the significant assumptions and the underlying data used by the Company in its analysis, which included historical claims data. To assess the payor mix assumptions we tested contracted rates, historical claims and payment data and related trends, and other relevant factors. We also assessed the historical accuracy of the Company’s estimates of third-party payor rebates.
/s/ Ernst & Young LLP
We have served as the Company’s auditor since 2005.
Boston, Massachusetts
February 11, 2021

F-2



VERTEX PHARMACEUTICALS INCORPORATED
Consolidated Statements of Operations
(in thousands, except per share amounts)
Year Ended December 31,
202020192018
Revenues:
Product revenues, net
$6,202,783 $4,160,726 $3,038,325 
Collaborative and royalty revenues
2,900 2,095 9,272 
Total revenues
6,205,683 4,162,821 3,047,597 
Costs and expenses:
Cost of sales
736,300 547,758 409,539 
Research and development expenses
1,829,537 1,754,540 1,416,476 
Sales, general and administrative expenses
770,456 658,498 557,616 
Change in fair value of contingent consideration
13,100 4,459  
Restructuring income  (184)
Intangible asset impairment charge  29,000 
Total costs and expenses
3,349,393 2,965,255 2,412,447 
Income from operations2,856,290 1,197,566 635,150 
Interest income
22,239 63,678 38,352 
Interest expense
(58,151)(58,502)(72,471)
Other income (expense), net
296,420 192,177 (790)
Income before provision for (benefit from) income taxes3,116,798 1,394,919 600,241 
Provision for (benefit from) income taxes
405,151 218,109 (1,486,862)
Net income
2,711,647 1,176,810 2,087,103 
Loss attributable to noncontrolling interest
  9,793 
Net income attributable to Vertex
$2,711,647 $1,176,810 $2,096,896 
Amounts per share attributable to Vertex common shareholders:
Net income:
Basic
$10.44 $4.58 $8.24 
Diluted
$10.29 $4.51 $8.09 
Shares used in per share calculations:
Basic
259,841 256,728 254,292 
Diluted
263,396 260,673 259,185 
The accompanying notes are an integral part of the consolidated financial statements.
F-3



VERTEX PHARMACEUTICALS INCORPORATED
Consolidated Statements of Comprehensive Income
(in thousands)
Year ended December 31,
202020192018
Net income$2,711,647 $1,176,810 $2,087,103 
Changes in other comprehensive income:
Unrealized holding (losses) gains on marketable securities, net(169)1,039 58 
Unrealized (losses) gains on foreign currency forward contracts, net of tax of $14.3 million, $7.0 million and $(7.1) million, respectively
(51,555)(14,003)27,438 
Foreign currency translation adjustment(14,783)10,332 8,855 
Total other comprehensive (loss) income(66,507)(2,632)36,351 
Comprehensive income2,645,140 1,174,178 2,123,454 
Comprehensive loss attributable to noncontrolling interest  9,793 
Comprehensive income attributable to Vertex$2,645,140 $1,174,178 $2,133,247 
The accompanying notes are an integral part of the consolidated financial statements.
F-4



VERTEX PHARMACEUTICALS INCORPORATED
Consolidated Balance Sheets
(in thousands, except share and per share amounts)
December 31,
20202019
Assets
Current assets:
Cash and cash equivalents
$5,988,187 $3,109,322 
Marketable securities
670,710 698,972 
Accounts receivable, net
885,352 633,518 
Inventories
280,777 167,502 
Prepaid expenses and other current assets
308,353 213,515 
Total current assets
8,133,379 4,822,829 
Property and equipment, net
958,534 745,080 
Goodwill
1,002,158 1,002,158 
Intangible assets
400,000 400,000 
Deferred tax assets
882,779 1,190,815 
Operating lease assets325,564 88,202 
Other assets
49,394 69,381 
Total assets
$11,751,808 $8,318,465 
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable
$155,139 $87,610 
Accrued expenses
1,404,971 1,116,912 
Other current liabilities
317,423 130,305 
Total current liabilities
1,877,533 1,334,827 
Long-term finance lease liabilities
539,042 538,576 
Long-term operating lease liabilities350,463 84,292 
Long-term contingent consideration
189,600 176,500 
Other long-term liabilities
108,355 99,026 
Total liabilities
3,064,993 2,233,221 
Commitments and contingencies
  
Shareholders’ equity:
Preferred stock, $0.01 par value; 1,000 shares authorized; none issued and outstanding
  
Common stock, $0.01 par value; 500,000 shares authorized, 259,890 and 258,993 shares issued and outstanding, respectively
2,599 2,589 
Additional paid-in capital7,894,027 7,937,606 
Accumulated other comprehensive loss(68,480)(1,973)
Retained earnings (accumulated deficit)858,669 (1,852,978)
Total shareholders’ equity
8,686,815 6,085,244 
Total liabilities and shareholders’ equity
$11,751,808 $8,318,465 
The accompanying notes are an integral part of the consolidated financial statements.
F-5



VERTEX PHARMACEUTICALS INCORPORATED
Consolidated Statements of Shareholders’ Equity and Noncontrolling Interest
(in thousands)
Common Stock
Additional
Paid-in Capital
Accumulated
Other
Comprehensive Income (Loss)
Retained Earnings (Accumulated Deficit)
Total Vertex
Shareholders’ Equity
Noncontrolling
Interest
Total
Shareholders’ Equity
Shares
Amount
Balance, December 31, 2017253,253 $2,512 $7,157,362 $(11,572)$(5,119,723)$2,028,579 $13,727 $2,042,306 
Cumulative effect adjustment for adoption of new accounting guidance
— — — (24,120)33,349 9,229 — 9,229 
Other comprehensive income, net of tax
— — — 36,351 — 36,351 — 36,351 
Net income (loss)
— — — — 2,096,896 2,096,896 (9,793)2,087,103 
Repurchases of common stock(2,094)(21)(350,022)— — (350,043)— (350,043)
Issuance of common stock under benefit plans
4,013 55 288,480 — — 288,535 — 288,535 
Stock-based compensation expense
— — 325,656 — — 325,656 — 325,656 
VIE noncontrolling interest upon deconsolidation
— — — — — — (3,540)(3,540)
Other VIE activity
— — — — — — (394)(394)
Balance, December 31, 2018255,172 $2,546 $7,421,476 $659 $(2,989,478)$4,435,203 $ $4,435,203 
Cumulative effect adjustment for adoption of new accounting guidance
— — — — (40,310)(40,310)— (40,310)
Other comprehensive loss, net of tax
— — — (2,632)— (2,632)— (2,632)
Net income
— — — — 1,176,810 1,176,810 — 1,176,810 
Repurchases of common stock(1,046)(10)(186,010)— — (186,020)— (186,020)
Common stock withheld for employee tax
obligations
(28)— (5,995)— — (5,995)— (5,995)
Issuance of common stock under benefit plans4,895 53 345,926 — — 345,979 — 345,979 
Stock-based compensation expense
— — 362,209 — — 362,209 — 362,209 
Balance, December 31, 2019258,993 $2,589 $7,937,606 $(1,973)$(1,852,978)$6,085,244 $ $6,085,244 
Other comprehensive loss, net of tax
— — — (66,507)— (66,507)— (66,507)
Net income
— — — — 2,711,647 2,711,647 

— 

2,711,647 
Repurchases of common stock
(2,405)(24)(539,112)— — (539,136)— (539,136)
Common stock withheld for employee tax
obligations
(804)(8)(200,263)— — (200,271)— (200,271)
Issuance of common stock under benefit plans
4,106 42 262,726 — — 262,768 — 262,768 
Stock-based compensation expense
— — 433,070 — — 433,070 — 433,070 
Balance, December 31, 2020259,890 $2,599 $7,894,027 $(68,480)$858,669 $8,686,815 $ $8,686,815 
The accompanying notes are an integral part of the consolidated financial statements.
F-6



VERTEX PHARMACEUTICALS INCORPORATED
Consolidated Statements of Cash Flows
(in thousands)
Year Ended December 31,
202020192018
Cash flows from operating activities:
Net income$2,711,647 $1,176,810 $2,087,103 
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense
429,461 360,489 325,047 
Depreciation expense
109,515 106,941 72,420 
Deferred income taxes (including benefit from valuation allowance release in 2018)
277,341 167,387 (1,512,325)
Gains on equity securities
(311,937)(197,597)(2,558)
Increase in fair value of contingent consideration13,100 4,459  
Intangible asset impairment charge  29,000 
Other non-cash items, net
78,832 16,942 33,579 
Changes in operating assets and liabilities:
Accounts receivable, net
(223,444)(225,587)(108,152)
Inventories
(132,014)(64,047)(31,965)
Prepaid expenses and other assets
(297,562)35,440 16,684 
Accounts payable
51,276 (22,785)36,554 
Accrued expenses
122,198 172,881 302,755 
Other liabilities
425,092 37,997 22,144 
Net cash provided by operating activities
3,253,505 1,569,330 1,270,286 
Cash flows from investing activities:
Payments to acquire businesses, net of cash acquired
 (1,154,212) 
Purchases of available-for-sale debt securities
(431,396)(537,196)(431,918)
Maturities of available-for-sale debt securities
372,342 475,924 431,576 
Sale of equity securities
437,567 94,936  
Purchases of property and equipment(259,798)(75,451)(95,449)
Investment in equity securities
(19,327)(39,319)(83,471)
Investment in note receivable
  (15,000)
Decrease in restricted cash due to deconsolidation of VIE
— — (7,896)
Net cash provided by (used in) investing activities
99,388 (1,235,318)(202,158)
Cash flows from financing activities:
Issuances of common stock under benefit plans
264,946 343,244 289,293 
Repurchases of common stock
(539,136)(186,020)(350,043)
Payments in connection with common stock withheld for employee tax obligations(200,271)(5,995) 
Payments on finance leases *(42,275)(39,185)(33,388)
Proceeds from finance leases *13,251 10,046 20,840 
Other financing activities
(1,796)4,683 2,079 
Net cash (used in) provided by financing activities
(505,281)126,773 (71,219)
Effect of changes in exchange rates on cash
20,552 1,643 (6,182)
Net increase in cash, cash equivalents and restricted cash2,868,164 462,428 990,727 
Cash, cash equivalents and restricted cash—beginning of period
3,120,681 2,658,253 1,667,526 
Cash, cash equivalents and restricted cash—end of period
$5,988,845 $3,120,681 $2,658,253 
Supplemental disclosure of cash flow information:
Cash paid for interest
$54,520 $55,554 $66,458 
Cash paid for income taxes
$191,776 $24,730 $12,402 
Capitalization of costs related to construction financing lease obligation *$ $ $3,389 
Issuances of common stock from employee benefit plans receivable$642 $2,820 $86 
 * For the year ended December 31, 2018, amounts are related to the Company’s capital leases and construction financing lease obligations pursuant to ASC 840, Leases, which was applicable until December 31, 2018.
The accompanying notes are an integral part of the consolidated financial statements.
F-7


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements

A.Nature of Business and Accounting Policies
Business
Vertex Pharmaceuticals Incorporated (“Vertex” or the “Company”) invests in scientific innovation to create transformative medicines for serious diseases. The Company’s business is focused on developing and commercializing therapies for the treatment of cystic fibrosis (“CF”) and advancing research and development programs in other indications. The Company’s marketed products are TRIKAFTA/KAFTRIO (elexacaftor/tezacaftor/ivacaftor and ivacaftor), SYMDEKO/SYMKEVI (tezacaftor in combination with ivacaftor), ORKAMBI (lumacaftor in combination with ivacaftor) and KALYDECO (ivacaftor), which are approved to treat people with CF who have specific mutations in their cystic fibrosis transmembrane conductance regulator (“CFTR”) gene.
As of December 31, 2020, the Company had cash, cash equivalents and marketable securities of $6.7 billion. The Company expects that cash flows from the sales of its products, together with its cash, cash equivalents and marketable securities, will be sufficient to fund its operations for at least the next twelve months.
The Company is subject to risks common to companies in its industry including, but not limited to, the dependence on revenues from its CF products, competition, uncertainty about clinical trial outcomes and regulatory approvals, uncertainties relating to pharmaceutical pricing and reimbursement, uncertainty related to international expansion, uncertain protection of proprietary technology, the need to comply with government regulations, share price volatility, dependence on collaborative relationships and potential product liability.
Basis of Presentation
The accompanying consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), reflect the operations of (i) the Company, (ii) its wholly-owned subsidiaries and (iii) a consolidated variable interest entity (“VIE”). In 2018, the Company deconsolidated BioAxone Biosciences, Inc. (“BioAxone”), a VIE the Company had consolidated since 2014. As of December 31, 2020 and 2019, the Company did not have any consolidated VIEs. All material intercompany balances and transactions have been eliminated. The Company operates in one segment, pharmaceuticals. Please refer to Note Q, “Segment Information,” for enterprise-wide disclosures regarding the Company’s revenues, major customers and long-lived assets by geographic area. The Company has reclassified certain items from the prior year’s consolidated financial statements to conform to the current year’s presentation.
Use of Estimates
The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the amounts of revenues and expenses during the reported periods. Significant estimates in these consolidated financial statements have been made in connection with (i) determining the transaction price of revenues, (ii) accounting for acquisitions, including intangible assets, goodwill and contingent consideration and (iii) evaluating deferred tax asset valuation allowances and the provision for income taxes. The Company bases its estimates on historical experience and various other assumptions, including in certain circumstances future projections that management believes to be reasonable under the circumstances. Actual results could differ from those estimates. Changes in estimates are reflected in reported results in the period in which they become known.
F-8


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Revenue Recognition
The Company recognizes revenue when a customer obtains control of promised goods or services. The Company records the amount of revenue that reflects the consideration that it expects to receive in exchange for those goods or services. The Company applies the following five-step model in order to determine this amount: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation. 
The Company only applies the five-step model to contracts when it is probable that it will collect the consideration to which it is entitled in exchange for the goods or services that it transfers to the customer. Once a contract is determined to be within the scope of Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”) at contract inception, the Company reviews the contract to determine which performance obligations it must deliver and which of these performance obligations are distinct. The Company recognizes as revenue the amount of the transaction price that is allocated to each performance obligation when that performance obligation is satisfied or as it is satisfied. Generally, the Company’s performance obligations are transferred to customers at a point in time, typically upon delivery.
Product Revenues, Net
The Company sells its products principally to a limited number of specialty pharmacy and specialty distributors in the United States (“U.S.”), which account for the largest portion of its total revenues, and makes international sales primarily to specialty distributors and retail chains, as well as hospitals and clinics, many of which are government-owned or supported (collectively, its “Customers”). The Company’s Customers in the U.S. subsequently resell the products to patients and health care providers. The Company recognizes net product revenues from sales when the Customers obtain control of the Company’s products, which typically occurs upon delivery to the Customer. The Company’s payment terms are approximately 30 days in the U.S. and consistent with prevailing practice in international markets.
Revenues from product sales are recorded at the net sales price, or “transaction price,” which includes estimates of variable consideration that result from (a) invoice discounts for prompt payment and distribution fees, (b) government and private payor rebates, chargebacks, discounts and fees and (c) costs of co-pay assistance programs for patients, as well as other incentives for certain indirect customers. Reserves are established for the estimates of variable consideration based on the amounts earned or to be claimed on the related sales. The reserves are classified as reductions to “Accounts receivable, net” if payable to a Customer or “Accrued expenses” if payable to a third-party. Where appropriate, the Company utilizes the expected value method to determine the appropriate amount for estimates of variable consideration based on factors such as the Company’s historical experience, current contractual and statutory requirements, specific known market events and trends, industry data and forecasted customer buying and payment patterns. The amount of variable consideration that is included in the transaction price may be constrained and is included in net product revenues only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period. Actual amounts of consideration ultimately received may differ from the Company’s estimates. If actual results vary from the Company’s estimates, the Company adjusts these estimates, which would affect net product revenue and earnings in the period such variances become known.
Invoice Discounts and Distribution Fees: The Company generally provides invoice discounts on product sales to its Customers for prompt payment and pays fees for distribution services, such as fees for certain data that Customers provide to the Company. The Company estimates that, based on its experience, its Customers will earn these discounts and fees, and deducts the full amount of these discounts and fees from its gross product revenues and accounts receivable at the time such revenues are recognized.
Rebates, Chargebacks, Discounts and Fees: The Company contracts with government agencies (its “Third-party Payors”) so that products will be eligible for purchase by, or partial or full reimbursement from, such Third-party Payors. The Company estimates the rebates, chargebacks, discounts and fees it will provide to Third-party Payors and deducts these estimated amounts from its gross product revenues at the time the revenues are recognized. For each product, the Company estimates the aggregate rebates, chargebacks and discounts that it will provide to Third-party Payors based upon (i) the Company’s contracts with these Third-party Payors, (ii) the government-mandated discounts and fees
F-9


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

applicable to government-funded programs, (iii) information obtained from the Company’s Customers and other third-party data regarding the payor mix for such product and (iv) historical experience.
Other Incentives: Other incentives that the Company offers include co-pay mitigation rebates provided by the Company to commercially insured patients who have coverage and who reside in states that permit co-pay mitigation programs. Based upon the terms of the Company’s co-pay mitigation programs, the Company estimates average co-pay mitigation amounts for each of its products in order to establish appropriate accruals.
The Company makes significant estimates and judgments that materially affect its recognition of net product revenues. The Company adjusts its estimated rebates, chargebacks and discounts based on new information, including information regarding actual rebates, chargebacks and discounts for its products, as it becomes available. Claims by third-party payors for rebates, chargebacks and discounts frequently are submitted to the Company significantly after the related sales, potentially resulting in adjustments in the period in which the new information becomes known. The Company’s credits to product revenue related to prior period sales have not been significant and primarily related to rebates and discounts.
The Company excludes taxes collected from Customers relating to product sales and remitted to governmental authorities from revenues.
Contract Liabilities
The Company recorded contract liabilities of $191.5 million and $62.3 million as of December 31, 2020 and 2019, respectively, related to annual contracts with government-owned and supported customers in international markets that limit the amount of annual reimbursement the Company can receive. Upon exceeding the annual reimbursement amount, products are provided free of charge, which is a material right. These contracts include upfront payments and fees. The Company defers a portion of the consideration received for shipments made up to the annual reimbursement limit as a portion of “Other current liabilities.” The deferred amount is recognized as revenue when the free products are shipped. The Company’s product revenue contracts include performance obligations that are one year or less.
The Company’s contract liabilities at the end of each fiscal year relate to contracts with annual reimbursement limits in international markets in which the annual period associated with the contract is not the same as the Company’s fiscal year. In these markets the Company recognizes revenues related to performance obligations satisfied in previous years; however, these revenues do not relate to any performance obligations that were satisfied more than 12 months prior to the beginning of the current year. During the years ended December 31, 2020, 2019 and 2018, the Company recorded $62.3 million, $24.9 million and $1.7 million, respectively, of revenues that were recorded as contract liabilities at the beginning of the year.
French Early Access Programs
In 2015, the Company began distributing ORKAMBI through early access programs in France and remained engaged in reimbursement discussions with the French government until November 2019, when the Company reached an agreement with the French government for ORKAMBI, including ORKAMBI distributed through early access programs. From the time the Company began distributing ORKAMBI through early access programs in France, it expected the difference between the amounts collected based on the invoiced amount and the final amount for ORKAMBI distributed through early access programs would be returned to the French government. As a result, the Company had classified a refund liability related to the early access programs in France within “Accrued expenses” on its consolidated balance sheets.
From the first quarter of 2018 through the third quarter of 2019, the Company recognized net product revenues for ORKAMBI sales in France under the early access programs based on a transaction price that reflected the Company’s estimate of consideration it expected to retain that would not be subject to a significant reversal in amounts recognized. When determining if variable consideration should be constrained, the Company considers whether there are factors outside its control that could result in a significant reversal of revenue. In making these assessments, the Company considers the likelihood and magnitude of a potential reversal of revenue.
Upon reaching an agreement with the French government for ORKAMBI, including ORKAMBI distributed through early access programs in November 2019, the Company updated the transaction price to reflect the final amount for ORKAMBI distributed through early access programs. As a result, the Company recognized net product revenues of
F-10


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

$155.8 million related to prior period ORKAMBI early access program sales in the fourth quarter of 2019 because the updated transaction price for ORKAMBI distributed through these programs exceeded the Company’s previous estimate of the consideration it expected to retain that would not be subject to a significant reversal in amounts recognized. The Company paid the final amount due to the French government in 2020.
Collaborative and Royalty Revenues
The Company has not recorded significant collaborative and royalty revenues during the three years ended December 31, 2020; however, in future periods, it may recognize collaborative revenues generated through collaborative research, development and/or commercialization agreements. The terms of these agreements typically include payment to the Company related to one or more of the following: nonrefundable, upfront license fees; development and commercial milestones; funding of research and/or development activities; and royalties on net sales of licensed products. Revenue is recognized upon satisfaction of a performance obligation by transferring control of a good or service to the collaborator.
For each collaborative research, development and/or commercialization agreement that results in revenue, the Company identifies all material performance obligations, which may include a license to intellectual property and know-how, research and development activities and/or transition activities. In order to determine the transaction price, in addition to any upfront payment, the Company estimates the amount of variable consideration at the outset of the contract either utilizing the expected value or most likely amount method, depending on the facts and circumstances relative to the contract. The Company constrains (reduces) the estimate of variable consideration such that it is probable that a significant reversal of previously recognized revenue will not occur throughout the life of the contract. When determining if variable consideration should be constrained, management considers whether there are factors outside the Company’s control that could result in a significant reversal of revenue. In making these assessments, the Company considers the likelihood and magnitude of a potential reversal of revenue. These estimates are re-assessed each reporting period as required.
Once the estimated transaction price is established, amounts are allocated to the performance obligations that have been identified. The transaction price is generally allocated to each separate performance obligation on a relative standalone selling price basis. In order to account for these agreements, the Company must develop assumptions that require judgment to determine the standalone selling price, which may include (i) the probability of obtaining marketing approval for the drug candidate, (ii) estimates regarding the timing of and the expected costs to develop and commercialize the drug candidate, (iii) estimates of future cash flows from potential product sales with respect to the drug candidate and (iv) appropriate discount and tax rates. Standalone selling prices used to perform the initial allocation are not updated after contract inception. The Company does not include a financing component to its estimated transaction price at contract inception unless it estimates that certain performance obligations will not be satisfied within one year.
Upfront License Fees: If a license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified in an arrangement, the Company recognizes revenue from the related nonrefundable, upfront license fees based on the relative standalone selling price prescribed to the license compared to the total selling price of the arrangement. The revenue is recognized when the license is transferred to the collaborator and the collaborator is able to use and benefit from the license. For licenses that are not distinct from other obligations identified in the arrangement, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time. If the combined performance obligation is satisfied over time, the Company applies an appropriate method of measuring progress for purposes of recognizing revenue from nonrefundable, upfront license fees. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.
F-11


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Development and Regulatory Milestone Payments: Depending on facts and circumstances, the Company may conclude that it is appropriate to include certain milestones in the estimated transaction price or that it is appropriate to fully constrain the milestones. A milestone payment is included in the transaction price in the reporting period that the Company concludes that it is probable that recording revenue in the period will not result in a significant reversal in amounts recognized in future periods. This may result in revenues from certain milestones and a corresponding contract asset being recorded in a reporting period before the milestone is achieved. Milestone payments that have not been included in the transaction price to date are fully constrained until the Company concludes that their achievement is probable and that recognition of the related revenue will not result in a significant reversal in amounts recognized in future periods. The Company re-evaluates the probability of achievement of such development milestones and any related constraint each reporting period and adjusts its estimate of the overall transaction price, including the amount of collaborative revenue that it has recorded, if necessary.
Research and Development Activities/Transition Services: If the Company is entitled to reimbursement from its collaborators for specified research and development expenses, it accounts for the related services that it provides as separate performance obligations if it determines that these services represent a material right. The Company also determines whether the reimbursement of research and development expenses should be accounted for as collaborative revenues or an offset to research and development expenses in accordance with the provisions of gross or net revenue presentation. The Company recognizes the corresponding revenues or records the corresponding offset to research and development expenses as it satisfies the related performance obligations.
Sales-based Milestone and Royalty Payments: The Company’s collaborators may be required to pay the Company sales-based milestones or royalties on future sales of commercial products. The Company recognizes revenues related to sales-based milestone and royalties upon the later to occur of (i) achievement of the collaborator’s underlying sales or (ii) satisfaction of any performance obligation(s) related to these sales, in each case assuming the license to the Company’s intellectual property is deemed to be the predominant item to which the sales-based milestones and/or royalties relate.
Concentration of Credit Risk
Financial instruments that potentially subject the Company to concentration of credit risk consist principally of money market funds and marketable securities. The Company places these investments with highly rated financial institutions, and, by policy, limits the amounts of credit exposure to any one financial institution. These amounts at times may exceed federally insured limits. The Company also maintains a foreign currency hedging program that includes foreign currency forward contracts with several counterparties. The Company has not experienced any credit losses related to these financial instruments and does not believe it is exposed to any significant credit risk related to these instruments.
The Company also is subject to credit risk from its accounts receivable related to its product sales and collaborators. The Company evaluates the creditworthiness of each of its customers and has determined that all of its material customers are creditworthy. To date, the Company has not experienced significant losses with respect to the collection of its accounts receivable. The Company believes that its allowances, which are not significant to its consolidated financial statements, are adequate at December 31, 2020. Please refer to Note Q, “Segment Information,” for further information.
Cash and Cash Equivalents
The Company considers all highly liquid investments with original maturities of three months or less at the date of purchase to be cash equivalents.
Marketable Securities
As of December 31, 2020, the Company’s marketable securities consisted of investments in available-for-sale debt securities and corporate equity securities with readily determinable fair values. The Company classifies marketable securities available to fund current operations as current assets on its consolidated balance sheets. Marketable securities are classified as long-term assets on the consolidated balance sheets if (i) they have been in an unrealized loss position for longer than one year and (ii) the Company has the ability and intent to hold them (a) until the carrying value is recovered and (b) such holding
F-12


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

period may be longer than one year. The Company’s marketable securities are stated at fair value. The fair value of these securities is based on quoted prices for identical or similar assets.
The Company records unrealized gains (losses) on available-for-sale debt securities as a component of “Accumulated other comprehensive loss,” which is a separate component of shareholders’ equity on its consolidated balance sheet, until such gains and losses are realized. Realized gains and losses, if any, are determined using the specific identification method.
The Company records changes in the fair value of its investments in corporate equity securities to “Other income (expense), net” in its consolidated statements of operations. Realized gains and losses, which are also included in “Other income (expense), net,” are determined on an original weighted-average cost basis.
The Company adopted Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”) as of January 1, 2020, which did not have a significant impact on its consolidated financial statements. For available-for-sale debt securities in unrealized loss positions, ASU 2016-13 requires the Company to record an allowance for credit losses using an expected loss model, which replaces the incurred loss model required under the previous guidance. A credit loss is limited to the amount by which the amortized cost of an investment exceeds its fair value. A previously recognized credit loss may be decreased in subsequent periods if the Company’s estimate of fair value for the investment increases. To determine whether to record a credit loss, the Company considers issuer specific credit ratings and historical losses as well as current economic conditions and its expectations for future economic conditions.
Accounts Receivable
The Company deducts invoice discounts for prompt payment and fees for distribution services from its accounts receivable based on its experience that the Company’s Customers will earn these discounts and fees. The Company’s estimates for its allowance for credit losses, which has not been significant to date, is determined based on existing contractual payment terms, historical payment patterns, current economic conditions and the Company’s expectation for future economic conditions.
Stock-based Compensation Expense
The Company expenses the fair value of employee restricted stock units and other forms of stock-based employee compensation over the associated employee service period on a straight-line basis. Stock-based compensation expense is determined based on the fair value of the award at the grant date and is adjusted each period to reflect actual forfeitures and the outcomes of certain performance conditions.
For awards with performance conditions in which the award does not vest unless the performance condition is met, the Company recognizes expense if, and to the extent that, the Company estimates that achievement of the performance condition is probable. If the Company concludes that vesting is probable, it recognizes expense from the date it reaches this conclusion through the estimated vesting date.
The Company provides to employees who have rendered a certain number of years of service to the Company and meet certain age requirements, partial or full acceleration of vesting of these equity awards, subject to certain conditions including a notification period, upon a termination of employment other than for cause. Approximately 5% of the Company’s employees were eligible for partial or full acceleration of any of their equity awards as of December 31, 2020. The Company recognizes stock-based compensation expense related to these awards over a service period reflecting qualified employees’ eligibility for partial or full acceleration of vesting.
Research and Development Expenses
The Company expenses as incurred all research and development expenses, including amounts funded by research and development collaborations. The Company capitalizes nonrefundable advance payments made by the Company for research and development activities and expenses the payments as the related goods are delivered or the related services are performed.
F-13


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Research and development expenses are comprised of costs incurred by the Company in performing research and development activities, including salary and benefits; stock-based compensation expense; outsourced services and other direct expenses, including clinical trial and pharmaceutical development costs; collaborative payments; and infrastructure costs, including facilities costs and depreciation expense.
Inventories
The Company values its inventories at the lower-of-cost or net realizable value. The Company determines the cost of its inventories, which includes amounts related to materials and manufacturing overhead, on a first-in, first-out basis. The Company performs an assessment of the recoverability of capitalized inventory during each reporting period, and writes down any excess and obsolete inventories to their net realizable value in the period in which the impairment is first identified. Shipping and handling costs incurred for inventory purchases are capitalized and recorded upon sale in “Cost of sales” in the consolidated statements of operations. Shipping and handling costs incurred for product shipments are recorded as incurred in “Cost of sales” in the consolidated statements of operations.
The Company capitalizes inventories produced in preparation for initiating sales of a drug candidate when the related drug candidate is considered to have a high likelihood of regulatory approval and the related costs are expected to be recoverable through sales of the inventories. In determining whether or not to capitalize such inventories, the Company evaluates, among other factors, information regarding the drug candidate’s safety and efficacy, the status of regulatory submissions and communications with regulatory authorities and the outlook for commercial sales, including the existence of current or anticipated competitive drugs and the availability of reimbursement. In addition, the Company evaluates risks associated with manufacturing the drug candidate and the remaining shelf-life of the inventories.
Property and Equipment
Property and equipment are recorded at cost, net of accumulated depreciation. Depreciation expense is recorded using the straight-line method over the estimated useful life of the related asset generally as follows:
DescriptionEstimated Useful Life
Buildings and improvements
15 to 40 years
Furniture and equipment
7 to 10 years
Leasehold improvements; assets under finance leasesThe shorter of the useful life of the assets or the estimated remaining term of the associated lease
Computers and software
3 to 5 years
Maintenance and repairs to an asset that do not improve or extend its life are charged to operations. When assets are retired or otherwise disposed of, the assets and related accumulated depreciation are eliminated from the accounts and any resulting gain or loss is reflected in the Company’s consolidated statements of operations. The Company performs an assessment of the fair value of the assets if indicators of impairment are identified during a reporting period and records the assets at the lower of the net book value or the fair value of the assets.
The Company capitalizes internal costs incurred to develop software for internal use during the application development stage. Amortization of capitalized internally developed software costs is recorded in depreciation expense over the useful life of the related asset.
Leases
The Company adopted ASU 2016-02, Leases (Topic 842) (“ASC 842”), as of January 1, 2019. Under ASC 842, the Company determines whether the arrangement contains a lease at the inception of an arrangement. If a lease is identified in an arrangement, the Company recognizes a right-of-use asset and liability on its consolidated balance sheet and determines whether the lease should be classified as a finance or operating lease. The Company does not recognize assets or liabilities for leases with lease terms of less than 12 months.
A lease qualifies as a finance lease if any of the following criteria are met at the inception of the lease: (i) there is a transfer of ownership of the leased asset to the Company by the end of the lease term, (ii) the Company holds an option to purchase the leased asset that it is reasonably certain to exercise, (iii) the lease term is for a major part of the remaining
F-14


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

economic life of the leased asset, (iv) the present value of the sum of lease payments equals or exceeds substantially all of the fair value of the leased asset, or (v) the nature of the leased asset is specialized to the point that it is expected to provide the lessor no alternative use at the end of the lease term. All other leases are recorded as operating leases.
Finance and operating lease assets and liabilities are recognized at the lease commencement date based on the present value of the lease payments over the lease term using the discount rate implicit in the lease. If the rate implicit is not readily determinable, the Company utilizes its incremental borrowing rate at the lease commencement date. Operating lease assets are further adjusted for prepaid or accrued lease payments. Operating lease payments are expensed using the straight-line method as an operating expense over the lease term. Finance lease assets are amortized to depreciation expense using the straight-line method over the shorter of the useful life of the related asset or the lease term. Finance lease payments are bifurcated into (i) a portion that is recorded as imputed interest expense and (ii) a portion that reduces the finance liability associated with the lease.
The Company does not separate lease and non-lease components when determining which lease payments to include in the calculation of its lease assets and liabilities. Variable lease payments are expensed as incurred. If a lease includes an option to extend or terminate the lease, the Company reflects the option in the lease term if it is reasonably certain it will exercise the option.
Finance leases are recorded in “Property and equipment, net,” “Other current liabilities” and “Long-term finance lease liabilities” and operating leases are recorded in “Operating lease assets,” “Other current liabilities” and “Long-term operating lease liabilities” on the Company’s consolidated balance sheet.
In 2018, prior to the adoption of ASC 842 on January 1, 2019, the Company applied build-to-suit accounting and was the deemed owner of its leased corporate headquarters in Boston and research site in San Diego, for which it was recognizing depreciation expense over the buildings’ useful lives and imputed interest on the corresponding construction financing lease obligations.
Income Taxes
Deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the financial statement carrying amounts and the income tax bases of assets and liabilities. A valuation allowance is applied against any net deferred tax asset if, based on the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. On a periodic basis, the Company reassesses the valuation allowance on its deferred income tax assets weighing positive and negative evidence to assess the recoverability of its deferred tax assets. The Company includes, among other things, its recent financial performance and its future projections in this periodic assessment.
The Company records liabilities related to uncertain tax positions by prescribing a minimum recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company does not believe any such uncertain tax positions currently pending will have a material adverse effect on its consolidated financial statements.
Variable Interest Entities
The Company reviews each collaboration agreement pursuant to which it licenses assets owned by a collaborator in order to determine whether or not it has a variable interest via the license agreement with the collaborator and if the variable interest is a variable interest in the collaborator as a whole. In assessing whether the Company has a variable interest in the collaborator as a whole, the Company considers and makes judgments regarding the purpose and design of the entity, the value of the licensed assets to the collaborator, the value of the collaborator’s total assets and the significant activities of the collaborator. If the Company has a variable interest in the collaborator as a whole, the Company assesses whether or not the Company is the primary beneficiary of that VIE based on a number of factors, including (i) which party has the power to direct the activities that most significantly affect the VIE’s economic performance, (ii) the parties’ contractual rights and responsibilities pursuant to the collaboration agreement and (iii) which party has the obligation to absorb losses of or the right to receive benefits from the VIE that could be significant to the VIE. If the Company determines it is the primary beneficiary of a VIE at the onset of the collaboration agreement, the collaboration is treated as a business combination and the Company consolidates the financial statements of the VIE into the Company’s consolidated financial statements. On a quarterly basis,
F-15


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

the Company evaluates whether it continues to be the primary beneficiary of any consolidated VIEs. If the Company determines that it is no longer the primary beneficiary of a consolidated VIE, or no longer has a variable interest in the VIE, it deconsolidates the VIE in the period that the determination is made.
Fair Value of In-process Research and Development Assets and Contingent Payments
The present-value models the Company uses to estimate the fair values of in-process research and development assets and contingent payments pursuant to collaborations and acquisitions incorporate significant assumptions.
The Company’s discounted cash flow models pertaining to in-process research and development assets include: (i) assumptions regarding the probability of obtaining marketing approval for a drug candidate; (ii) the timing of and the expected costs to develop and commercialize a drug candidate; (iii) estimates of future cash flows from potential product sales with respect to a drug candidate; and (iv) appropriate discount and tax rates.
The Company bases its estimates of the probability of achieving the milestones relevant to the fair value of contingent payments, which could include milestone, royalty and option payments, on industry data. Estimates included in the discounted cash flow models pertaining to contingent payments also include: (i) estimate regarding the timing of the relevant development and commercial milestones and royalties, (ii) and appropriate discount rates. Please refer to Note D, “Fair Value Measurements,” for further information.
In-process Research and Development Assets
The Company records the fair value of in-process research and development assets as of the transaction date of a business combination. Each of these assets is accounted for as an indefinite-lived intangible asset and is maintained on the Company’s consolidated balance sheet until either the project underlying it is completed or the asset becomes impaired. If the asset becomes impaired or is abandoned, the carrying value of the related intangible asset is written down to its fair value, and an impairment charge is recorded in the period in which the impairment occurs. If a project is completed, the carrying value of the related intangible asset is amortized as a part of “Cost of sales” over the remaining estimated life of the asset beginning in the period in which the project is completed. In-process research and development assets are tested for impairment on an annual basis as of October 1, and more frequently if indicators are present or changes in circumstances suggest that impairment may exist.
In-process research and development that is acquired in a transaction that does not qualify as a business combination under U.S. GAAP and that does not have an alternative future use is recorded to “Research and development expenses” in the period in which it is acquired.
Goodwill
The difference between the purchase price and the fair value of assets acquired and liabilities assumed in a business combination is allocated to goodwill. Goodwill is evaluated for impairment on an annual basis as of October 1, and more frequently if indicators are present or changes in circumstances suggest that impairment may exist. As noted in Basis of Presentation above, the Company has one operating segment, pharmaceuticals, which is its only reporting unit.
Deconsolidation
Upon the occurrence of certain events and on a regular basis, the Company evaluates whether it no longer has a controlling interest in its subsidiaries, including consolidated VIEs. If the Company determines it no longer has a controlling interest, the subsidiary is deconsolidated. The Company records a gain or loss on deconsolidation based on the difference on the deconsolidation date between (i) the aggregate of (a) the fair value of any consideration received, (b) the fair value of any retained noncontrolling investment in the former subsidiary and (c) the carrying amount of any noncontrolling interest in the subsidiary being deconsolidated, less (ii) the carrying amount of the former subsidiary’s assets and liabilities.
Discontinued Operations
The Company assesses whether a deconsolidation is required to be presented as discontinued operations in its consolidated financial statements on the deconsolidation date. This assessment is based on whether or not the deconsolidation
F-16


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

represents a strategic shift that has or will have a major effect on the Company’s operations or financial results. If the Company determines that a deconsolidation requires presentation as a discontinued operation on the deconsolidation date, or at any point during the one year period following such date, it will present the former subsidiary as a discontinued operation in current and comparative period financial statements.
Embedded Derivatives
Embedded derivatives are required to be bifurcated from the host instruments and recorded at fair value if the derivatives are not clearly and closely related to the host instruments on the date of issuance. The Company did not have any material embedded derivatives that required bifurcation recorded on its consolidated balance sheets as of December 31, 2020 and 2019, respectively.
Hedging Activities
The Company recognizes the fair value of hedging instruments that are designated and qualify as hedging instruments pursuant to U.S. GAAP, foreign currency forward contracts, as either assets or liabilities on the consolidated balance sheets. Changes in the fair value of these instruments are recorded each period in “Accumulated other comprehensive loss” as unrealized gains and losses until the forecasted underlying transaction occurs. Unrealized gains and losses on these foreign currency forward contracts are included in “Prepaid expenses and other current assets” or “Other assets,” and “Other current liabilities” or “Other long-term liabilities,” respectively, on the Company’s consolidated balance sheets depending on the remaining period until their contractual maturity. Realized gains and losses for the effective portion of such contracts are recognized in “Product revenues, net” in the consolidated statement of operations in the same period that it recognizes the product revenues that were impacted by the hedged foreign exchange rate changes. The Company classifies the cash flows from hedging instruments in the same category as the cash flows from the hedged items.
Certain of the Company’s hedging instruments are subject to master netting arrangements to reduce the risk arising from such transactions with its counterparties. The Company presents unrealized gains and losses on its foreign currency forward contracts on a gross basis within its consolidated balance sheets.
The Company also enters into foreign currency forward contracts with contractual maturities of less than one month designed to mitigate the effect of changes in foreign exchange rates on monetary assets and liabilities including intercompany balances. These contracts are not designated as hedging instruments pursuant to U.S. GAAP. Realized gains and losses for such contracts are recognized in “Other income (expense), net” in the consolidated statement of operations each period.
Restructuring Expenses
The Company records costs and liabilities associated with exit and disposal activities based on estimates of fair value in the period the liabilities are incurred. The Company’s exit and disposal activities have primarily been associated with the Company’s facilities, but also have included the termination of employees in some cases. The Company’s initial estimate of its liabilities for net ongoing costs associated with its facility obligations are recorded at fair value on the cease use date. On a quarterly basis, the Company evaluates and adjusts these liabilities as appropriate for changes in circumstances. Changes to the Company’s estimate of these liabilities are recorded as additional restructuring expenses (credits). These costs are included in “Restructuring expense (income)” on the Company’s consolidated statements of operations.
Comprehensive Income
Comprehensive income consists of net income and other comprehensive income (loss), which includes foreign currency translation adjustments and unrealized gains and losses on foreign currency forward contracts and certain marketable securities. For purposes of comprehensive income disclosures, the Company records provisions for or benefits from income taxes related to the unrealized gains and losses on foreign currency forward contracts and certain marketable securities. The Company does not record provisions for or benefits from income taxes related to the cumulative translation adjustment, as the Company intends to permanently reinvest undistributed earnings in its foreign subsidiaries.
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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Foreign Currency Translation and Transactions
The majority of the Company’s operations occur in entities that have the U.S. dollar denominated as their functional currency. The assets and liabilities of the Company’s entities with functional currencies other than the U.S. dollar are translated into U.S. dollars at rates of exchange in effect at the end of the year. Revenue and expense amounts for these entities are translated using the average exchange rates for the period. Net unrealized gains and losses resulting from foreign currency translation are included in “Accumulated other comprehensive loss.” Net foreign currency exchange transaction losses, which are included in “Other income (expense), net” on the Company’s consolidated statement of operations, were $16.1 million, $5.2 million and $1.1 million for 2020, 2019 and 2018, respectively. These net foreign currency exchange losses are presented net of the impact of the foreign currency forward contracts designed to mitigate their effect on the Company’s consolidated statement of operations.
Net Income Per Share Attributable to Vertex Common Shareholders
Basic and diluted net income per share attributable to Vertex common shareholders are presented in conformity with the two-class method required for participating securities. Shares of unvested restricted stock granted under the Company’s Amended and Restated 2006 Stock and Option Plan had the non-forfeitable right to receive dividends on an equal basis with other outstanding common stock. As a result, these unvested shares of restricted stock were considered participating securities under the two-class method. In 2020 and 2019, the Company did not have a significant amount of restricted stock outstanding under this plan: therefore, the two-class method did not impact its basic and diluted net income per share attributable to Vertex common shareholders for the years ended December 31, 2020 and 2019.
Under the two-class method, earnings are allocated to (i) Vertex common shares, excluding unvested restricted stock, and (ii) participating securities, based on their respective weighted-average shares outstanding for the period. Potentially dilutive shares result from the assumed exercise of outstanding stock options (the proceeds of which are then assumed to have been used to repurchase outstanding stock using the treasury-stock method).
Basic net income per share attributable to Vertex common shareholders is based upon the weighted-average number of common shares outstanding during the period, excluding restricted stock that had been issued but had not yet vested, if any. Diluted net income per share attributable to Vertex common shareholders is based upon the weighted-average number of common shares outstanding during the period plus additional weighted-average common equivalent shares outstanding during the period when the effect is dilutive.
Recently Adopted Accounting Standards
Internal-Use Software
In 2018, the Financial Accounting Standards Board (“FASB”) issued ASU 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (“ASU 2018-15”), which clarifies the accounting for implementation costs in cloud computing arrangements. ASU 2018-15 became effective on January 1, 2020. The adoption of ASU 2018-15 resulted in an insignificant amount of additional assets recorded on the Company’s consolidated balance sheet.
Fair Value Measurement
In 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”), which modifies the disclosure requirements for fair value measurements. ASU 2018-13 became effective on January 1, 2020. The Company adoption of ASU 2018-13 resulted in additional disclosures related to the Company’s Level 3 inputs. Please refer to Note D, “Fair Value Measurements,” for further information.
Credit Losses
In 2016, the FASB issued ASU 2016-13, which requires entities to record expected credit losses for certain financial instruments, including trade receivables, as an allowance that reflects the entity's current estimate of credit losses expected to be incurred. For available-for-sale debt securities in unrealized loss positions, ASU 2016-13 requires allowances to be
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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

recorded instead of reducing the amortized cost of the investment. ASU 2016-13 became effective on January 1, 2020. The adoption of ASU 2016-13 did not have a significant impact on the Company’s consolidated financial statements.
Leases
On January 1, 2019, the Company adopted ASC 842 using the modified-retrospective method. Until December 31, 2018, the Company applied build-to-suit accounting and was the deemed owner of its leased corporate headquarters in Boston and research site in San Diego, for which it was recognizing depreciation expense over the buildings’ useful lives and imputed interest on the corresponding construction financing lease obligations. Under the amended guidance that became effective January 1, 2019, the Company accounts for these buildings as finance leases, resulting in increased depreciation expense over the respective lease terms of approximately 15 years, which are significantly shorter than the buildings’ useful lives of 40 years. The amended guidance also results in a reduction in imputed interest expense in the initial years of each finance lease term. As of January 1, 2019, the Company recorded a cumulative effect adjustment to increase its “Accumulated deficit” by $40.3 million related to the adjustments to its build-to-suit leases. Please refer to “Leases” above for further information.
Revenue Recognition
On January 1, 2018, the Company adopted ASC 606, using the modified retrospective adoption method for all contracts that were not completed as of the date of adoption. Based on the Company’s review of existing customer contracts as of January 1, 2018, the Company concluded that the only significant impact that the adoption of ASC 606 had on its consolidated financial statements related to shipments of ORKAMBI under early access programs in France. Prior to the adoption of ASC 606, the Company did not recognize revenue on the proceeds received from sales of ORKAMBI under early access programs in France because the price was not fixed or determinable based on the status of ongoing pricing discussions. As of January 1, 2018, the Company recorded a cumulative effect adjustment to its accumulated deficit of $8.3 million related to the adoption of ASC 606, which primarily represented the Company’s estimated amount of consideration it expected to retain related to these shipments that would not be subject to a significant reversal in amounts recognized, net of costs previously deferred related to these shipments.
Equity Investments
On January 1, 2018, the Company adopted ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), using the required modified-retrospective adoption method. Under ASU 2016-01, equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of an investee) are measured at fair value with changes in fair value recognized in net income. As of January 1, 2018, the Company held publicly traded equity investments and equity investments accounted for under the cost method. As a result, in 2018, the Company recorded a $25.1 million cumulative effect adjustment to “Accumulated deficit” related to its publicly traded equity investments equal to the unrealized gain, net of tax, that was recorded in “Accumulated other comprehensive loss” as of December 31, 2017.
Recently Issued Accounting Standards
Income Taxes
In 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740) (“ASU 2019-12”), which simplifies the accounting for income taxes. ASU 2019-12 was effective on January 1, 2021. The Company does not expect the adoption of ASU 2019-12 to have a significant impact on its consolidated financial statements.

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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

B.Collaborative Arrangements
The Company has entered into numerous agreements pursuant to which it collaborates with third parties on research, development and commercialization programs, including in-license and out-license agreements.
In-license Agreements
The Company has entered into a number of license agreements in order to advance and obtain access to technologies and services related to its research and early-development activities. The Company is generally required to make an upfront payment upon execution of the license agreement; development, regulatory and commercialization milestones payments upon the achievement of certain product research, development and commercialization objectives; and royalty payments on future sales, if any, of commercial products resulting from the collaboration.
Pursuant to the terms of its in-license agreements, the Company’s collaborators typically lead the discovery efforts and the Company leads all preclinical, development and commercialization activities associated with the advancement of any drug candidates and funds all expenses.
The Company typically can terminate its in-license agreements by providing advance notice to its collaborators; the required length of notice is dependent on whether any product developed under the license agreement has received marketing approval. The Company’s license agreements may be terminated by either party for a material breach by the other, subject to notice and cure provisions. Unless earlier terminated, these license agreements generally remain in effect until the date on which the royalty term and all payment obligations with respect to all products in all countries have expired.
CRISPR Therapeutics AG
In 2015, the Company entered into a strategic collaboration, option and license agreement (the “CRISPR Agreement”) with CRISPR Therapeutics AG and its affiliates (“CRISPR”) to collaborate on the discovery and development of potential new treatments aimed at the underlying genetic causes of human diseases using CRISPR-Cas9 gene-editing technology. The Company had the exclusive right to license certain targets. In the fourth quarter of 2019, the Company paid an aggregate of $30.0 million to exclusively license three CRISPR-Cas9-based targets, including CF, pursuant to the CRISPR Agreement. The Company recorded the $30.0 million total option payment to “Research and development expenses” in the fourth quarter of 2019. For each of the three targets that the Company elected to license, CRISPR has the potential to receive up to an additional $410.0 million in development, regulatory and commercial milestones as well as royalties on net product sales.
In 2017, the Company entered into a co-development and co-commercialization agreement with CRISPR pursuant to the terms of the CRISPR Agreement, under which the Company and CRISPR are co-developing and will co-commercialize CTX001 (the “CTX001 Co-Co Agreement”) for the treatment of hemoglobinopathies, including treatments for sickle cell disease and beta thalassemia. As part of the collaboration, the Company and CRISPR share equally all development costs and potential worldwide revenues related to potential hemoglobinopathy treatments. The Company concluded that the CTX001 Co-Co Agreement is a cost-sharing arrangement, which results in the net impact of the arrangement being recorded in “Research and development expenses” in its consolidated statements of operations. During the years ended December 31, 2020, 2019 and 2018, the net expense related to the CTX001 Co-Co Agreement was $50.6 million, $30.1 million and $19.7 million, respectively.
In July 2019, the Company entered into a separate strategic collaboration and license agreement (the “CRISPR DMD/DM1 Agreement”) with CRISPR. Pursuant to this agreement, the Company received an exclusive worldwide license to CRISPR’s existing and future intellectual property for Duchenne muscular dystrophy (“DMD”) and myotonic dystrophy type 1 (“DM1”) and the Company made an upfront payment of $175.0 million to CRISPR. The Company concluded that it did not have any alternative future use for the acquired in-process research and development and recorded the upfront payment to “Research and development expenses” in the third quarter of 2019. In 2020, the Company recorded $25.0 million to “Research and development expenses” related to a pre-clinical milestone earned by CRISPR under the CRISPR DMD/DM1 Agreement. CRISPR has the potential to receive up to an additional $800.0 million in research, development, regulatory and commercial milestones for the DMD and DM1 programs as well as royalties on net product sales. CRISPR has the option to co-develop and co-commercialize all DM1 products globally and forego the milestones and royalties associated with the
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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

DM1 program. The Company funds all expenses associated with the collaboration except for research costs for specified guide RNA research conducted by CRISPR, which the Company and CRISPR share equally.
Kymera Therapeutics Inc.
In May 2019, the Company entered into a strategic research and development collaboration agreement with Kymera Therapeutics Inc. (“Kymera”) to advance small molecule protein degraders against multiple targets. Kymera’s proprietary platform technology is being applied in the collaboration activities in exchange for an upfront payment of $50.0 million. The Company has the exclusive right to license up to six protein targets, for each of which Kymera may receive up to $170.0 million in payments, including development, regulatory and commercial milestones as well as royalties on net product sales. In addition to the upfront payment, the Company purchased $20.0 million of Kymera’s preferred stock. The Company determined that the fair value of its investment in Kymera’s preferred stock, which did not have a readily determinable fair value, approximated $20.0 million. The preferred stock converted to common stock when Kymera became a publicly traded company in 2020.
The Company determined that substantially all of the fair value of the Kymera collaboration agreement was attributable to in-process research and development and no substantive processes were acquired that would constitute a business. The Company concluded that it did not have any alternative future use for the acquired in-process research and development and recorded the $50.0 million upfront payment to “Research and development expenses” in 2019.
Moderna, Inc.
In 2016, the Company entered into a strategic collaboration and licensing agreement with Moderna, Inc. (“Moderna”), pursuant to which the parties are seeking to identify and develop messenger ribonucleic acid (“mRNA”) therapeutics for the treatment of CF.
In September 2020, the Company entered into a new strategic collaboration and licensing agreement with Moderna (the “2020 Moderna Agreement”) aimed at the discovery and development of lipid nanoparticles and mRNAs that can deliver gene-editing therapies to lung cells for the treatment of CF. Pursuant to the 2020 Moderna Agreement, Moderna received an upfront payment of $75.0 million and is eligible to receive up to $380.0 million in development, regulatory and commercial milestones as well as royalties on net product sales. The Company determined that substantially all of the fair value of the 2020 Moderna Agreement was attributable to in-process research and development and no substantive processes were acquired that would constitute a business. The Company concluded that it did not have any alternative future use for the acquired in-process research and development and recorded the upfront payment to “Research and development expenses” in the third quarter of 2020.
Other In-License Agreements
In addition to the collaborative arrangements described above, the Company has entered into additional in-license agreements that it does not consider to be individually significant to its consolidated financial statements. In addition to the payments described above, the Company recorded upfront, option and milestone payments totaling $84.6 million in 2020, $63.3 million in 2019 and $46.9 million in 2018 to “Research and development expenses” which included a $40.0 million upfront payment to Skyhawk Therapeutics, Inc. (“Skyhawk”) in 2020.
For Skyhawk and several other in-license agreements that are not individually significant to the Company’s consolidated financial statements, the Company determined that substantially all of the fair value of each individual agreement was attributable to in-process research and development and no substantive processes were acquired that would constitute a business. The Company concluded that it did not have any alternative future use for the acquired in-process research and development associated with the agreements and recorded the related portion of the upfront payments to “Research and development expenses.” Please refer to Note D, “Fair Value Measurements,” and Note E, “Marketable Securities and Equity Investments,” for further information regarding the Company’s investments in its collaborators.
Variable Interest Entities (VIEs)
The Company licensed rights to certain drug candidates from these third-party collaborators, which has resulted in the consolidation of the third-parties’ financial statements into the Company’s consolidated financial statements as VIEs for
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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

certain periods of time. Most recently, the Company deconsolidated the financial statements of BioAxone from its consolidated financial statements as of December 31, 2018. The Company has not consolidated a VIE into its financial statements since December 31, 2018.
BioAxone Biosciences, Inc.
In 2014, the Company entered into a license and collaboration agreement (the “BioAxone Agreement”) with BioAxone, which resulted in the consolidation of BioAxone as a VIE.
In October 2018, the Company announced it would stop clinical development of VX-210 and terminate the Phase 2b clinical trial of VX-210 based on the recommendation of the clinical trial’s Data Safety Monitoring Board and the Company’s review of interim data. In December 2018, the Company notified BioAxone of its intent to terminate the BioAxone Agreement and executed a release that immediately allowed BioAxone to control development of its neurological programs other than VX-210 without the Company’s consent. As a result of this decision, the Company recorded a $29.0 million impairment charge related to VX-210 that was attributable to noncontrolling interest.
As a result, the Company deconsolidated BioAxone as of December 31, 2018 because it determined that it no longer was the primary beneficiary of BioAxone as it no longer had the power to direct the significant activities of BioAxone. The net impact of the deconsolidation was not material to the Company’s consolidated statement of operations. The Company’s net loss attributable to noncontrolling interest for the year ended December 31, 2018 was $9.8 million.
Out-license Agreements
The Company has entered into licensing agreements pursuant to which it has out-licensed rights to certain drug candidates to third-party collaborators. Pursuant to these out-license agreements, the Company’s collaborators become responsible for all costs related to the continued development of such drug candidates and obtain development and commercialization rights to these drug candidates. Depending on the terms of the agreements, the Company’s collaborators may be required to make upfront payments, milestone payments upon the achievement of certain product research and development objectives and may also be required to pay royalties on future sales, if any, of commercial products resulting from the collaboration. The termination provisions associated with these collaborations are generally the same as those described above related to the Company’s in-license agreements.
Merck KGaA, Darmstadt, Germany
In January 2017, the Company entered into a strategic collaboration and license agreement (the “Oncology Agreement”) with Merck KGaA, Darmstadt, Germany (the “Licensee”). Pursuant to the Oncology Agreement, the Company granted the Licensee an exclusive worldwide license to research, develop and commercialize four oncology research and development programs including two clinical-stage programs targeting DNA damage repair: its ataxia telangiectasia and Rad3-related protein kinase inhibitor program, or ATR program, including VX-970 and VX-803, and its DNA-dependent protein kinase inhibitor program, or DNA-PK program, including VX-984. In addition, the Company granted the Licensee exclusive, worldwide rights to two pre-clinical programs.
The Oncology Agreement provided for an upfront payment from the Licensee to the Company of $230.0 million, which was recorded as “Collaborative and royalty revenues,” under the multiple element arrangement accounting guidance that was applicable in 2017. All of the Company’s activities related to the Oncology Agreement were substantially complete as of December 31, 2017.
In December 2018, the Company entered into an agreement with Merck KGaA, Darmstadt, Germany (the “DNA-PK Agreement”) whereby the Company licensed the two lead Vertex DNA-PK compounds from its DNA-PK program for use in the field of gene integration for six specific indications. In exchange for this exclusive worldwide license to research, develop and commercialize the DNA-PK program for the specified indications within the field of gene integration, the Company made an upfront payment of $65.0 million. Merck KGaA, Darmstadt, Germany has the potential to receive additional milestones, primarily related to approval and reimbursement in various markets, as well as royalties on net product sales.
The Company evaluated the DNA-PK Agreement and concluded it represents a modification of the Oncology Agreement pursuant to ASC 606. As of December 2018, when the Company entered into the DNA-PK Agreement, the Company had
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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

completed its obligations under the Oncology Agreement, but the Oncology Agreement was an open contract pursuant to ASC 606 since the Company could receive future royalty payments from the commercialization of the licensed programs under the Oncology Agreement.
In applying ASC 606, the Company determined that the license granted under the DNA-PK Agreement is distinct from the license granted by the Company under the Oncology Agreement since the license to the two lead Vertex DNA-PK compounds is capable of being distinct as the Company is able to benefit from the license via its ability to internally develop and commercialize the two lead Vertex DNA-PK compounds in the six named indications in the field of gene-editing, and the license is not dependent on Merck KGaA, Darmstadt, Germany providing any specialized services to the Company. In addition, the license to the two lead Vertex DNA-PK compounds granted to the Company under the DNA-PK Agreement is distinct from the license granted by the Company under the Oncology Agreement as the rights conveyed in the licenses differ and both parties have the ability to commercially benefit from the licenses on their own. Furthermore, the consideration attributable to the license of the two lead Vertex DNA-PK compounds represents fair value. Therefore, the Company determined it should account for the DNA-PK Agreement as a separate agreement.
The Company determined that substantially all of the fair value of the DNA-PK Agreement was attributable to a single in-process research and development asset that did not constitute a business. The Company concluded that it did not have any alternative future use for the acquired in-process research and development and recorded the $65.0 million payment to “Research and development expenses” in 2018 accordingly.
Janssen Pharmaceuticals, Inc.
In 2014, the Company entered into an agreement with Janssen Pharmaceuticals, Inc. (“Janssen”). In the third quarter of 2020, Janssen exercised its right to terminate its exclusive worldwide license to develop and commercialize certain drug candidates for the treatment of influenza, based on Phase 3 clinical trial results for pimodivir.
Cystic Fibrosis Foundation
The Company has a research, development and commercialization agreement that was originally entered into in 2004 with the Cystic Fibrosis Foundation, as successor in interest to the Cystic Fibrosis Foundation Therapeutics, Inc. This agreement was most recently amended in 2016. Pursuant to the agreement, as amended, the Company agreed to pay royalties ranging from low-single digits to mid-single digits on potential sales of certain compounds first synthesized and/or tested between March 1, 2014 and August 31, 2016, including elexacaftor, and tiered royalties ranging from single digits to sub-teens on covered compounds first synthesized and/or tested during a research term on or before February 28, 2014, including KALYDECO (ivacaftor), ORKAMBI (lumacaftor in combination with ivacaftor) and SYMDEKO/SYMKEVI (tezacaftor in combination with ivacaftor). For combination products, such as ORKAMBI, SYMDEKO/SYMKEVI and TRIKAFTA/KAFTRIO (elexacaftor/tezacaftor/ivacaftor and ivacaftor), sales are allocated equally to each of the active pharmaceutical ingredients in the combination product.

C.Earnings Per Share
Basic net income per share attributable to Vertex common shareholders is based upon the weighted-average number of common shares outstanding during the period. Diluted net income per share attributable to Vertex common shareholders utilizing the treasury-stock method is based upon the weighted-average number of common shares outstanding during the period plus additional weighted-average common equivalent shares outstanding during the period when the effect is dilutive.
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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

The following table sets forth the computation of basic and diluted net income per share for the periods ended:
202020192018
(in thousands, except per share amounts)
Basic net income attributable to Vertex per common share calculation:
Net income attributable to Vertex common shareholders
$2,711,647 $1,176,810 $2,096,896 
Less: Undistributed earnings allocated to participating securities
  (501)
Net income attributable to Vertex common shareholders—basic
$2,711,647 $1,176,810 $2,096,395 
Basic weighted-average common shares outstanding
259,841 256,728 254,292 
Basic net income attributable to Vertex per common share
$10.44 $4.58 $8.24 
Diluted net income attributable to Vertex per common share calculation:
Net income attributable to Vertex common shareholders
$2,711,647 $1,176,810 $2,096,896 
Less: Undistributed earnings allocated to participating securities
  (492)
Net income attributable to Vertex common shareholders—diluted
$2,711,647 $1,176,810 $2,096,404 
Weighted-average shares used to compute basic net income per common share
259,841 256,728 254,292 
Effect of potentially dilutive securities:
Stock options1,801 2,231 2,913 
Restricted stock units (including PSUs) and restricted stock
1,741 1,700 1,963 
Employee stock purchase program
13 14 17 
Weighted-average shares used to compute diluted net income per common share
263,396 260,673 259,185 
Diluted net income attributable to Vertex per common share
$10.29 $4.51 $8.09 
The Company did not include the securities in the following table in the computation of the net income per share attributable to Vertex common shareholders calculations because the effect would have been anti-dilutive during each period.
202020192018
(in thousands)
Stock options312 2,833 2,217 
Unvested restricted stock units (including PSUs) and restricted stock257 6 5 

D.Fair Value Measurements
The fair value of the Company’s financial assets and liabilities reflects the Company’s estimate of amounts that it would have received in connection with the sale of the assets or paid in connection with the transfer of the liabilities in an orderly transaction between market participants at the measurement date. In connection with measuring the fair value of its assets and liabilities, the Company seeks to maximize the use of observable inputs (market data obtained from sources independent from the Company) and to minimize the use of unobservable inputs (the Company’s assumptions about how market participants would price assets and liabilities). The following fair value hierarchy is used to classify assets and liabilities based on the observable inputs and unobservable inputs used in order to determine the fair value of the Company’s financial assets and liabilities:
Level 1:
Quoted prices in active markets for identical assets or liabilities. An active market for an asset or liability is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.
Level 2:
Observable inputs other than Level 1 inputs. Examples of Level 2 inputs include quoted prices in active markets for similar assets or liabilities and quoted prices for identical assets or liabilities in markets that are not active.
Level 3:
Unobservable inputs based on the Company’s assessment of the assumptions that market participants would use in pricing the asset or liability.
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Notes to Consolidated Financial Statements (Continued)

The Company’s investment strategy is focused on capital preservation. The Company invests in instruments that meet the credit quality standards outlined in the Company’s investment policy. This policy also limits the amount of credit exposure to any one issue or type of instrument. The Company maintains strategic investments separately from the investment policy that governs its other cash, cash equivalents and marketable securities as described in Note E, “Marketable Securities and Equity Investments.” Additionally, the Company utilizes foreign currency forward contracts intended to mitigate the effect of changes in foreign exchange rates on its consolidated statement of operations.
During the three years ended December 31, 2020, the Company did not record any other-than-temporary impairment charges related to its financial assets.
The following tables set forth the Company’s financial assets and liabilities subject to fair value measurements by level within the fair value hierarchy (and does not include $2.8 billion and $2.3 billion of cash as of December 31, 2020 and 2019, respectively):
As of December 31, 2020As of December 31, 2019
Fair Value Hierarchy
Fair Value Hierarchy
Total
Level 1
Level 2
Level 3
Total
Level 1
Level 2
Level 3
(in thousands)
Financial instruments carried at fair value (asset position):
Cash equivalents:
Money market funds
$3,141,053 $3,141,053 $ $ $791,039 $791,039 $ $ 
Corporate debt securities
    6,070  6,070  
Commercial paper
    29,472  29,472  
Marketable securities:
Corporate equity securities
195,781 15,650 180,131  282,084 261,797 20,287  
Government-sponsored enterprise securities
80,063 80,063   12,733 12,733   
Corporate debt securities
231,598  231,598  301,799  301,799  
Commercial paper
163,268  163,268  102,356  102,356  
Prepaid expenses and other current assets:
Foreign currency forward contracts
    9,725  9,725  
Total financial assets
$3,811,763 $3,236,766 $574,997 $ $1,535,278 $1,065,569 $469,709 $ 
Financial instruments carried at fair value (liability position):
Other current liabilities:
Foreign currency forward contracts
$(59,184)$ $(59,184)$ $(5,533)$ $(5,533)$ 
Long-term contingent consideration
(189,600)  (189,600)(176,500)  (176,500)
Other long-term liabilities:
Foreign currency forward contracts
(4,283) (4,283) (1,821) (1,821) 
Total financial liabilities
$(253,067)$ $(63,467)$(189,600)$(183,854)$ $(7,354)$(176,500)
Please refer to Note E, “Marketable Securities and Equity Investments,” for the carrying amount and related unrealized gains (losses) by type of investment.
Fair Value of Corporate Equity Securities
The Company maintains strategic investments in corporate equity securities separately from the investment policy that governs its other cash, cash equivalents and marketable securities. The Company classifies its investments in publicly traded companies as “Marketable securities” on its consolidated balance sheets. Generally, the Company’s investments in the common stock of these publicly traded companies are valued based on Level 1 inputs because they have readily determinable fair values. However, certain of the Company’s investments in publicly traded companies have been or continue to be valued based on Level 2 inputs due to transfer restrictions associated with these investments. During the year ended December 31, 2020, the Company transferred the fair value of one of its strategic investments in a publicly traded company from Level 2 to
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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Level 1 upon the expiration of transfer restrictions associated with this investment. Please refer to Note E, “Marketable Securities and Equity Investments,” for further information on these investments.
Fair Value of Contingent Consideration
In 2019, the Company acquired Exonics Therapeutics, Inc. (“Exonics”), a privately-held company focused on creating transformative gene-editing therapies to repair mutations that cause DMD and other severe neuromuscular diseases, including DM1. The Company’s Level 3 contingent consideration liabilities are related to $678.3 million of development and regulatory milestones potentially payable to Exonics’ former equity holders. The Company bases its estimates of the probability of achieving the milestones relevant to the fair value of contingent payments on industry data attributable to rare diseases. The discount rates used in the valuation model for contingent payments, which were between 0.4% and 1.9% as of December 31, 2020, represent a measure of credit risk and market risk associated with settling the liabilities. Significant judgment is used in determining the appropriateness of these assumptions at each reporting period. Due to the uncertainties associated with development and commercialization of drug candidates in the pharmaceutical industry and the effects of changes in other assumptions including discount rates, the Company expects its estimates regarding the fair value of contingent consideration to change in the future, resulting in adjustments to the fair value of the Company’s contingent consideration liabilities, and the effect of any such adjustments could be material.
The following table represents a rollforward of the fair value of the Company’s contingent consideration liabilities:
Year Ended December 31, 2020
(in thousands)
Balance at December 31, 2019$176,500 
Increase in fair value of contingent payments
13,100 
Balance at December 31, 2020
$189,600 
The “Increase in fair value of contingent payments” in the table above was primarily due to changes in market interest rates.

E.Marketable Securities and Equity Investments
A summary of the Company’s cash equivalents and marketable securities, which are recorded at fair value (and do not include $2.8 billion and $2.3 billion of cash as of December 31, 2020 and 2019, respectively), is shown below:
As of December 31, 2020As of December 31, 2019
Amortized Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair Value
Amortized Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair Value
(in thousands)
Cash equivalents:
Money market funds
$3,141,053 $ $ $3,141,053 $791,039 $ $ $791,039 
Corporate debt securities
    6,070   6,070 
Commercial paper
    29,470 3 (1)29,472 
Total cash equivalents
$3,141,053 $ $ $3,141,053 $826,579 $3 $(1)$826,581 
Marketable securities:
Government-sponsored enterprise securities
$80,046 $17 $ $80,063 $12,689 $44 $ $12,733 
Corporate debt securities
231,263 377 (42)231,598 301,458 391 (50)301,799 
Commercial paper
163,286 19 (37)163,268 102,240 121 (5)102,356 
Total marketable debt securities474,595 413 (79)474,929 416,387 556 (55)416,888 
Corporate equity securities
51,427 144,354  195,781 113,829 168,255  282,084 
Total marketable securities$526,022 $144,767 $(79)$670,710 $530,216 $168,811 $(55)$698,972 
F-26


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Available-for-sale debt securities were classified on the Company’s consolidated balance sheets as follows at fair value:
December 31,
20202019
(in thousands)
Cash and cash equivalents
$3,141,053 $826,581 
Marketable securities
474,929 416,888 
Total
$3,615,982 $1,243,469 
Available-for-sale debt securities by contractual maturity were as follows:
December 31,
20202019
(in thousands)
Matures within one year$3,526,185 $1,137,942 
Matures after one year through five years
89,797 105,527 
Total
$3,615,982 $1,243,469 
The Company has a limited number of available-for-sale debt securities in insignificant loss positions as of December 31, 2020, which it does not intend to sell and has concluded it will not be required to sell before recovery of the amortized costs for the investments at maturity. The Company did not record any charges for other-than-temporary declines in the fair value of available-for-sale debt securities or gross realized gains or losses in 2020, 2019 or 2018.
The Company records changes in the fair value of its investments in corporate equity securities to “Other income (expense), net” in the Company’s consolidated statements of operations. During the three years ended December 31, 2020, the Company’s net unrealized gains on corporate equity securities held at the conclusion of each period were as follows:
202020192018
(in thousands)
Net unrealized gains$136,167 $143,175 $2,558 
During the years ended December 31, 2020 and 2019, the Company sold the common stock of publicly traded companies, which were primarily sales of its investment in CRISPR, resulting in the following:
20202019
(in thousands)
Proceeds received$437,567 $94,936 
Weighted-average cost basis$103,332 $29,825 
During the year ended December 31, 2018, the Company did not sell any common stock of publicly traded companies.
As of December 31, 2020, the carrying value of the Company’s equity investments without readily determinable fair values, which are recorded in “Other assets” on its consolidated balance sheets, was $20.8 million.

F-27


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

F.Accumulated Other Comprehensive Income (Loss)
The following table summarizes the changes in accumulated other comprehensive income (loss) by component:
Unrealized Holding Gains (Losses), Net of Tax
Foreign Currency Translation AdjustmentOn Available-For-Sale Debt SecuritiesOn Equity SecuritiesOn Foreign Currency Forward ContractsTotal
(in thousands)
Balance as of December 31, 2017$(21,031)$(594)$25,069 $(15,016)$(11,572)
Other comprehensive income before reclassifications
8,855 58  25,664 34,577 
Amounts reclassified from accumulated other comprehensive income (loss)
   1,774 1,774 
Net current period other comprehensive income
8,855 58  27,438 36,351 
Amounts reclassified to accumulated deficit pursuant to adoption of new accounting standard
949  (25,069) (24,120)
Balance as of December 31, 2018$(11,227)$(536)$ $12,422 $659 
Other comprehensive income before reclassifications
10,332 1,039  11,513 22,884 
Amounts reclassified from accumulated other comprehensive income (loss)
   (25,516)(25,516)
Net current period other comprehensive income (loss)
10,332 1,039  (14,003)(2,632)
Balance as of December 31, 2019$(895)$503 $ $(1,581)$(1,973)
Other comprehensive loss before reclassifications(14,783)(169) (54,467)(69,419)
Amounts reclassified from accumulated other comprehensive income (loss)
   2,912 2,912 
Net current period other comprehensive loss(14,783)(169) (51,555)(66,507)
Balance as of December 31, 2020$(15,678)$334 $ $(53,136)$(68,480)

G.Hedging
Foreign currency forward contracts - Designated as hedging instruments
The Company maintains a hedging program intended to mitigate the effect of changes in foreign exchange rates for a portion of the Company’s forecasted product revenues denominated in certain foreign currencies. The program includes foreign currency forward contracts that are designated as cash flow hedges under GAAP having contractual durations from one to eighteen months. The Company recognizes realized gains and losses for the effective portion of such contracts in “Product revenues, net” in its consolidated statements of operations in the same period that it recognizes the product revenues that were impacted by the hedged foreign exchange rate changes.
The Company formally documents the relationship between foreign currency forward contracts (hedging instruments) and forecasted product revenues (hedged items), as well as the Company’s risk management objective and strategy for undertaking various hedging activities, which includes matching all foreign currency forward contracts that are designated as cash flow hedges to forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the foreign currency forward contracts are highly effective in offsetting changes in cash flows of hedged items on a prospective and retrospective basis. If the Company were to determine that a (i) foreign currency forward contract is not highly effective as a cash flow hedge, (ii) foreign currency forward contract has ceased to be a highly effective hedge or (iii) forecasted transaction is no longer probable of occurring, the Company would discontinue hedge accounting treatment prospectively. The Company measures effectiveness based on the change in fair value of the forward contracts and the fair value of the hypothetical foreign currency forward contracts with terms that match the critical terms of the risk being hedged. As of December 31, 2020, all hedges were determined to be highly effective.
F-28


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Prior to the adoption of ASU 2017-12 on January 1, 2019, the Company did not record any ineffectiveness related to its foreign currency forward contracts that were designated as hedging instruments in the year ended December 31, 2018. ASU 2017-12 eliminated the requirement to separately measure and report hedge ineffectiveness.
The Company considers the impact of its counterparties’ credit risk on the fair value of the foreign currency forward contracts. As of December 31, 2020 and December 31, 2019, credit risk did not change the fair value of the Company’s foreign currency forward contracts.
The following table summarizes the notional amount in U.S. dollars of the Company’s outstanding foreign currency forward contracts designated as cash flow hedges under U.S. GAAP:
As of December 31,
20202019
Foreign Currency
(in thousands)
Euro
$745,099 $501,197 
British pound sterling
160,427 87,032 
Australian dollar
99,922 89,705 
Canadian dollar
86,468 50,452 
Total foreign currency forward contracts
$1,091,916 $728,386 
Foreign currency forward contracts - Not designated as hedging instruments
The Company also enters into foreign currency forward contracts with contractual maturities of less than one month that are designed to mitigate the effect of changes in foreign exchange rates on monetary assets and liabilities, including intercompany balances. These contracts are not designated as hedging instruments under U.S. GAAP. The Company recognizes realized gains and losses for such contracts in “Other income (expense), net” in its consolidated statements of operations each period. As of December 31, 2020, the notional amount of the Company’s outstanding foreign currency forward contracts where hedge accounting under U.S. GAAP is not applied was $198.9 million.
During the three years ended December 31, 2020, the Company recognized the following related to foreign currency forward contacts in its consolidated statements of operations:
December 31,
202020192018
(in thousands)
Designated as hedging instruments - Reclassified from AOCI
Product revenues, net
$(3,714)$32,546 $(1,252)
Not designated as hedging instruments
Other income (expense), net
$22,113 $(4,838)$(623)
Total reported in the Consolidated Statement of Operations
Product revenues, net
$6,202,783 $4,160,726 $3,038,325 
Other income (expense), net
$296,420 $192,177 $(790)
The following table summarizes the fair value of the Company’s outstanding foreign currency forward contracts designated as cash flow hedges under U.S. GAAP included on its consolidated balance sheets:
As of December 31, 2020
AssetsLiabilities
ClassificationFair ValueClassificationFair Value
(in thousands)
Prepaid expenses and other current assets
$ 
Other current liabilities
$(59,184)
Other assets
 
Other long-term liabilities
(4,283)
Total assets
$ 
Total liabilities
$(63,467)
F-29


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

As of December 31, 2019
AssetsLiabilities
ClassificationFair ValueClassificationFair Value
(in thousands)
Prepaid expenses and other current assets
$9,725 
Other current liabilities
$(5,533)
Other assets
 
Other long-term liabilities
(1,821)
Total assets
$9,725 
Total liabilities
$(7,354)
As of December 31, 2020, the Company expects amounts that are related to foreign exchange forward contracts designated as cash flow hedges under U.S. GAAP recorded in “Prepaid expenses and other current assets” and “Other current liabilities” to be reclassified to earnings within twelve months.
The following table summarizes the potential effect of offsetting derivatives by type of financial instrument designated as cash flow hedges under U.S. GAAP on the Company’s consolidated balance sheets:
As of December 31, 2020
Gross Amounts RecognizedGross Amounts OffsetGross Amounts PresentedGross Amounts Not OffsetLegal Offset
Foreign currency forward contracts(in thousands)
Total assets$ $ $ $ $ 
Total liabilities
(63,467) (63,467) (63,467)
As of December 31, 2019
Gross Amounts RecognizedGross Amounts OffsetGross Amounts PresentedGross Amounts Not OffsetLegal Offset
Foreign currency forward contracts(in thousands)
Total assets$9,725 $ $9,725 $(7,354)$2,371 
Total liabilities
(7,354) (7,354)7,354  

H.Inventories
Inventories consisted of the following:
As of December 31,
20202019
(in thousands)
Raw materials
$46,232 $26,247 
Work-in-process
161,324 107,021 
Finished goods
73,221 34,234 
Total
$280,777 $167,502 

F-30


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

I.Property and Equipment
Property and equipment, net consisted of the following:
As of December 31,
20202019
(in thousands)
Buildings and improvements$876,091 $713,412 
Furniture and equipment346,698 317,567 
Leasehold improvements234,585 175,769 
Computers and software258,612 230,872 
Land33,128  
Total property and equipment, gross1,749,114 1,437,620 
Less: accumulated depreciation
(790,580)(692,540)
Total property and equipment, net
$958,534 $745,080 
The Company recorded depreciation expense of $109.5 million, $106.9 million and $72.4 million in 2020, 2019 and 2018, respectively. The Company’s finance lease amortization is included in depreciation expense.
In the third quarter of 2020, the Company purchased its continuous manufacturing facility located near its corporate headquarters in Boston, Massachusetts from its former landlord for $155.3 million in cash. The Company’s December 31, 2020 consolidated balance sheet reflects the following: (i) classification of the building within “Property and equipment, net” with a 40 year useful life, (ii) derecognition of the previously recorded insignificant right-of-use asset and operating lease liability for the facility and (iii) a finance lease for the land on which the facility is constructed.

J.Intangible Assets and Goodwill
Intangible Assets
As of December 31, 2020 and 2019, the Company had $400.0 million of in-process research and development intangible assets classified as “Intangible assets” on its consolidated balance sheet. In 2019, the Company recorded $387.0 million and $13.0 million of in-process research and development intangible assets related to its acquisitions of Semma Therapeutics, Inc. (“Semma”) and Exonics, respectively. In 2018, the Company recorded an intangible asset impairment charge of $29.0 million related to VX-210 that was licensed from BioAxone in 2014. Please refer to Note B, “Collaborative Arrangements,” for further information regarding the events and circumstances associated with this impairment charge.
Goodwill
As of December 31, 2020 and December 31, 2019, goodwill of $1.00 billion was recorded on the Company’s consolidated balance sheet. During 2019, the Company recorded goodwill of $554.6 million and $397.1 million related to its acquisitions of Semma and Exonics, respectively.

F-31


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

K.Additional Balance Sheet Detail
Accrued expenses consisted of the following:
As of December 31,
20202019
(in thousands)
Product revenue accruals$781,903 $641,368 
Payroll and benefits169,387 159,464 
Research, development and commercial contract costs136,704 105,663 
Royalty payable165,404 98,578 
Tax related accruals
104,173 72,293 
Other
47,400 39,546 
Total
$1,404,971 $1,116,912 
Other current liabilities consisted of the following:
As of December 31,
20202019
(in thousands)
Contract liabilities
$191,519 $62,332 
Fair value of cash flow hedges59,184 5,533 
Finance lease liabilities
42,434 38,794 
Other
24,286 23,646 
Total
$317,423 $130,305 
The cash, cash equivalents and restricted cash balances at the beginning and ending of each period presented in the Company’s consolidated statements of cash flows consisted of the following:
As of December 31,
2020201920182017
(in thousands)
Cash and cash equivalents
$5,988,187 $3,109,322 $2,650,134 $1,665,412 
Prepaid expenses and other current assets
658 8,004 4,910 2,114 
Other assets
 3,355 3,209  
Cash, cash equivalents and restricted cash per consolidated statement of cash flows$5,988,845 $3,120,681 $2,658,253 $1,667,526 
The Company’s restricted cash, if any, is included in “Prepaid expenses and other current assets” and “Other assets” on its consolidated balance sheets.

L.Leases
Finance Leases
The Company’s finance lease assets and liabilities primarily relate to its corporate headquarters in Boston and research site in San Diego (the “Buildings”). These Buildings are classified as finance leases because the present value of the sum of the lease payments associated with the Buildings exceeds substantially all of the fair value of the Buildings. The Company also has outstanding finance leases for equipment and land.
Pursuant to ASC 842, which was adopted on January 1, 2019, the Company’s finance lease assets are amortized to depreciation expense using the straight-line method over the remaining lease term; and the Company records imputed interest expense associated with its finance lease liabilities. In 2018, prior to the adoption of ASC 842, the Company applied build-to-
F-32


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

suit accounting and was deemed for accounting purposes to be the owner of the Buildings, for which it recognized depreciation expense over the Buildings 40 years useful lives and imputed interest expense on the corresponding financing lease obligations.
Corporate Headquarters
In 2011, the Company entered into two lease agreements, pursuant to which the Company leases approximately 1.1 million square feet of office and laboratory space in two buildings in Boston, Massachusetts for a term of 15 years. Base rent payments commenced in December 2013, and will continue through December 2028. The Company utilizes this initial period as its lease term. The Company has an option to extend the lease term for an additional ten years.
San Diego Lease
In 2015, the Company entered into a lease agreement pursuant to which the Company leases approximately 170,000 square feet of office and laboratory space in San Diego, California for a term of 16 years. Base rent payments commenced in the second quarter of 2019, and will continue through May 2034. The Company utilizes this initial period as its lease term. The Company has an option to extend the lease term for up to two additional five-year terms. The Company placed this building into service in the second quarter of 2018.
Operating Leases
The Company’s operating leases relate to its real estate leases that are not classified as finance leases.
Cell and Genetic Therapies Lease
In 2019, the Company entered into an agreement to lease approximately 269,000 square feet of office and laboratory space near its corporate headquarters in Boston, Massachusetts. The lease agreement includes an initial term of 15 years plus a period to install leasehold improvements, with an option to extend the lease term for up to two additional ten-year periods. Base rent payments will commence in the fourth quarter of 2021. The Company has utilized the initial period, which commenced in the third quarter of 2020 upon occupation of the building, as its lease term. As of December 31, 2020, the Company recorded a right-of-use asset of $253.5 million and an operating lease liability of $286.6 million related to the lease agreement on its consolidated balance sheet.
Please refer to the Company’s accounting policy, Leases, in Note A, “Nature of Business and Accounting Policies,” for further information on the accounting treatment for the Company’s finance and operating leases.
Aggregate Lease Information Related to the Application of ASC 842
The following information is disclosed in accordance with ASC 842, which became effective January 1, 2019. The components of lease cost recorded in the Company’s consolidated statement of operations were as follows:
20202019
Operating lease cost$23,128 $11,972 
Finance lease cost
Amortization of leased assets51,223 49,778 
Interest on lease liabilities50,188 52,839 
Variable lease cost30,776 27,997 
Sublease income(4,021)(6,391)
Net lease cost$151,294 $136,195 
The Company’s variable lease cost during 2020 and 2019 primarily related to operating expenses, taxes and insurance associated with its finance leases. The Company’s sublease income during 2020 and 2019 primarily related to subleases for an insignificant portion of the Company’s corporate headquarters.
F-33


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

The Company’s leases are included on its consolidated balance sheets as follows:
As of December 31,
20202019
(in thousands)
Finance leases
Property and equipment, net$431,193 $445,336 
Total finance lease assets
$431,193 $445,336 
Other current liabilities$42,434 $38,795 
Long-term finance lease liabilities539,042 538,576 
Total finance lease liabilities
$581,476 $577,371 
Operating leases
Operating lease assets$325,564 $88,202 
Total operating lease assets
$325,564 $88,202 
Other current liabilities$10,521 $11,504 
Long-term operating lease liabilities350,463 84,292 
Total operating lease liabilities
$360,984 $95,796 
Maturities of the Company’s finance and operating lease liabilities as of December 31, 2020 were as follows:
Year
Finance Leases
Operating Leases
Total
(in thousands)
2021$85,470 $15,266 $100,736 
202290,020 34,119 124,139 
202388,185 34,663 122,848 
202493,434 34,113 127,547 
202593,421 31,564 124,985 
Thereafter
416,455 320,684 737,139 
Total lease payments
866,985 470,409 1,337,394 
Less: tenant allowance (36,051)(36,051)
Less: amount representing interest
(285,509)(73,374)(358,883)
Present value of lease liabilities
$581,476 $360,984 $942,460 
The weighted-average remaining lease terms and discount rates related to the Company’s leases were as follows:
As of December 31,
20202019
Weighted-average remaining lease term (in years)
Finance leases
11.589.74
Operating leases
14.109.70
Weighted-average discount rate
Finance leases
8.36 %9.04 %
Operating leases
2.28 %3.75 %
F-34


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Supplemental cash flow information related to the Company’s leases was as follows:
20202019
(in thousands)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases
$16,254 $10,650 
Operating cash flows from finance leases
$48,908 $50,527 
Financing cash flows from finance leases
$42,275 $39,185 
Right-of-use assets obtained in exchange for lease obligations
Operating leases *
$293,604 $34,605 
Finance leases
$33,128 $ 
* 2019 includes $33.7 million acquired in 2019 pursuant to the Company’s acquisitions of Semma and Exonics.
Additional Lease Information Related to the Application of ASC 840
Rental expense was $17.3 million during the year ended December 31, 2018, which is disclosed in accordance with ASC 840, Leases (Topic 840), which was applicable during the year ended December 31, 2018.

M. Common Stock, Preferred Stock and Equity Plans
Common Stock and Preferred Stock
The Company is authorized to issue 500,000,000 shares of common stock. Holders of common stock are entitled to one vote per share. Holders of common stock are entitled to receive dividends, if and when declared by the Company’s Board of Directors, and to share ratably in the Company’s assets legally available for distribution to the Company’s shareholders in the event of liquidation. Holders of common stock have no preemptive, subscription, redemption or conversion rights. The holders of common stock do not have cumulative voting rights.
The Company is authorized to issue 1,000,000 shares of preferred stock in one or more series and to fix the powers, designations, preferences and relative participating, option or other rights thereof, including dividend rights, conversion rights, voting rights, redemption terms, liquidation preferences and the number of shares constituting any series, without any further vote or action by the Company’s shareholders. As of December 31, 2020 and 2019, the Company had no shares of preferred stock issued or outstanding.
Share Repurchase Programs
During 2018, the Company’s Board of Directors approved a share repurchase program (the “2018 Share Repurchase Program”), pursuant to which the Company was authorized to repurchase up to $500.0 million of its common stock between February 1, 2018 and December 31, 2019. During the years ended December 31, 2019 and 2018, the Company repurchased 832,186 and 2,093,891 shares, respectively, of its common stock under the 2018 Share Repurchase Program for an aggregate of $150.0 million and $350.0 million, respectively, including commissions and fees. As of June 30, 2019, the Company had repurchased the entire $500.0 million it was authorized to repurchase of its common stock under the 2018 Share Repurchase Program.
In July 2019, the Company’s Board of Directors approved a second share repurchase program (the “2019 Share Repurchase Program”), pursuant to which the Company was authorized to repurchase up to $500.0 million of its common stock between August 1, 2019 and December 31, 2020. During the years ended December 31, 2020 and 2019, the Company repurchased 2,058,962 and 213,548 shares, respectively, of its common stock under the 2019 Share Repurchase Program for an aggregate of $464.0 million and $36.0 million, respectively, including commissions and fees. As of December 31, 2020, the Company had repurchased the entire $500.0 million it was authorized to repurchase of its common stock under the 2019 Share Repurchase Program.
In November 2020, the Company’s Board of Directors approved a third share repurchase program (the “2020 Share Repurchase Program”), pursuant to which the Company is authorized to repurchase up to $500.0 million of its common stock
F-35


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

by December 31, 2022. In the fourth quarter of 2020, the Company repurchased 345,897 shares of its common stock under the 2020 Share Repurchase Program for an aggregate of $75.1 million including commissions and fees. The Company expects to fund further repurchases of its common stock through a combination of cash on hand and cash generated by operations. As of December 31, 2020, there was a total of $424.9 million remaining for repurchases of its common stock under the 2020 Share Repurchase Program.
Under the 2020 Share Repurchase Program, the Company is authorized to purchase shares from time to time through open market or privately negotiated transactions. Such purchases are made pursuant to Rule 10b5-1 plans or other means as determined by the Company’s management and in accordance with the requirements of the SEC.
Stock and Option Plans
The purpose of each of the Company’s stock and option plans is to attract, retain and motivate its employees, consultants and directors. Awards granted under these plans can be nonstatutory stock options (“NSOs”), incentive stock options (“ISOs”), restricted stock units (“RSUs”) including performance-based RSUs (“PSUs”), restricted stock (“RSs”), or other equity-based awards, as specified in the individual plans.
Shares issued under all of the Company’s plans are funded through the issuance of new shares. The following table contains information about the Company’s equity plans:
As of December 31, 2020
Title of Plan
Group Eligible
Type of Award
Granted
Awards
Outstanding
Additional Awards
Authorized for Grant
2013 Stock and Option Plan
Employees, Non-employee Directors and ConsultantsNSO,
RS, RSU and PSU
7,231,859 13,385,321 
2006 Stock and Option PlanEmployees, Non-employee Directors and ConsultantsNSO,
RS and RSU
383,818  
Total
7,615,677 13,385,321 
All options granted under the Company’s 2013 Stock and Option Plan (“2013 Plan”) and 2006 Stock and Option Plan (“2006 Plan”) were granted with an exercise price equal to the fair value of the underlying common stock on the date of grant. As of December 31, 2020, the stock and option plan under which the Company is authorized to make new equity awards is the Company’s 2013 Plan. Under the 2013 Plan, no stock options can be awarded with an exercise price less than the fair market value on the date of grant. In 2019 and 2018, the Company’s shareholders approved increases in the number of shares authorized for issuance pursuant to the 2013 Stock and Option Plan of (i) 5,000,000 shares in 2019 and (ii) 8,000,000 shares in 2018.
During the three years ended December 31, 2020, grants to current employees and directors primarily had a grant date that was the same as the date the award was approved by the Company’s Board of Directors. During the three years ended December 31, 2020, for grants to new employees and directors, the date of grant for awards was the employee’s first day of employment or the date the director was elected to the Company’s Board of Directors. All options awarded under the Company’s stock and option plans expire not more than 10 years from the grant date.
F-36


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Stock Options
The following table summarizes information related to the outstanding and exercisable options during the year ended December 31, 2020:
Stock Options
Weighted-average
Exercise Price
Weighted-average Remaining Contractual Life
Aggregate Intrinsic
Value
(in thousands)(per share)(in years)(in thousands)
Outstanding at December 31, 20196,272 $134.92 
Granted23 $286.27 
Exercised(1,883)$121.42 
Forfeited(174)$165.39 
Expired
 $ 
Outstanding at December 31, 20204,238 $140.47 6.34$397,211 
Exercisable at December 31, 20202,894 $125.83 5.73$313,936 
The aggregate intrinsic value in the table above represents the total pre-tax amount, net of exercise price, that would have been received by option holders if all option holders had exercised all options with an exercise price lower than the market price on the last business day of 2020, which was $233.91 based on the average of the high and low price of the Company’s common stock on that date.
The total intrinsic value (the amount by which the fair market value exceeded the exercise price) of stock options exercised during 2020, 2019 and 2018 was $255.0 million, $325.9 million and $258.2 million, respectively. The total cash received by the Company as a result of employee stock option exercises during 2020, 2019 and 2018 was $228.2 million, $317.8 million and $263.4 million, respectively.
The following table summarizes information about stock options outstanding and exercisable at December 31, 2020:
Options Outstanding
Options Exercisable
Range of Exercise Prices
Number
Outstanding
Weighted-average
Remaining Contractual Life
Weighted-average
Exercise Price
Number
Exercisable
Weighted-average
Exercise Price
(in thousands)(in years)(per share)(in thousands)(per share)
$36.28–$40.00
60 0.85$38.06 60 $38.06 
$40.01–$60.00
154 1.73$47.07 154 $47.07 
$60.01–$80.00
97 3.25$74.53 97 $74.54 
$80.01–$100.00
991 5.34$88.93 937$89.07 
$100.01–$120.00
127 4.07$109.24 127 $109.22 
$120.01–$140.00
271 4.71$129.49 270 $129.50 
$140.01–$160.00
715 7.05$155.49 415 $155.42 
$160.01–$180.00
578 7.47$168.40 312 $166.01 
$180.01–$200.00
1,222 7.85$185.31 499 $184.92 
$200.01–$286.27
23 9.42$286.27 23 $286.27 
Total
4,238 6.34$140.47 2,894 $125.83 
F-37


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Restricted Stock Units (excluding PSUs) and Restricted Stock
The following table summarizes the restricted stock unit and restricted stock activity of the Company during the year ended December 31, 2020:
Restricted Stock Units (excluding PSUs)
Restricted Stock
Number of Shares
Weighted-average
Grant-date
Fair Value
Number of Units
Weighted-average
Grant-date Fair Value
(in thousands)(per share)(in thousands)(per share)
Unvested at December 31, 20193,131 $163.61 92 $91.97 
Granted1,244 $258.45  $ 
Vested(1,443)$159.10 (92)$91.97 
Cancelled
(210)$193.84  $ 
Unvested at December 31, 20202,722 $206.99  $ 
The total fair value of restricted stock units that vested during 2020, 2019 and 2018 (measured on the date of vesting) was $370.3 million, $178.2 million and $104.8 million, respectively. The total fair value of restricted stock that vested during 2020, 2019 and 2018 (measured on the date of vesting) was $21.4 million, $70.7 million and $114.5 million, respectively.
Performance-based RSUs (PSUs)
The potential range of shares issuable pursuant to the Company’s PSU awards range from 0% to 200% of the target shares based on financial and non-financial measures. Fifty percent of PSUs that could be earned have a one-year performance period with the amount actually earned dependent upon the Company’s financial performance and with vesting of the earned shares in three equal installments over a three-year period. The remaining 50% of PSUs that could be earned have a three-year performance period with the amount actually earned dependent upon the achievement of multiple clinical development milestones and with the earned shares cliff vesting at the end of the three-year performance period.
The following table summarizes the PSU activity of the Company during the year ended December 31, 2020:
Performance-Based RSU
Number of Units
Weighted-average
Grant-date
Fair Value
(in thousands)(per share)
Unvested at December 31, 2019 (1)734 $143.21 
Granted (2)
547 $241.38 
Vested
(577)$114.11 
Cancelled
(48)$194.46 
Unvested at December 31, 2020656 $202.06 
(1) “Unvested” represents the Company’s PSUs at target to the extent performance has not been certified plus the actual number of shares that continue to be subject to service conditions for which the performance has been achieved and certified.
(2) “Granted” represents (i) the target number of shares issuable for grants during 2020 and (ii) any change in the number of shares issuable pursuant to outstanding PSUs based on performance certification during 2020.
The total fair value of PSUs that vested during 2020, 2019 and 2018 (measured on the date of vesting) was $138.5 million, $73.3 million and $23.2 million, respectively.
Employee Stock Purchase Plan
The Company has an employee stock purchase plan (the “ESPP”). The ESPP permits eligible employees to enroll in a twelve-month offering period comprising two six-month purchase periods. Participants may purchase shares of the Company’s common stock, through payroll deductions, at a price equal to 85% of the fair market value of the common stock on the first day of the applicable twelve-month offering period, or the last day of the applicable six-month purchase period,
F-38


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

whichever is lower. Purchase dates under the ESPP occur on or about May 14 and November 14 of each year. As of December 31, 2020, there were 1,996,321 shares of common stock authorized for issuance pursuant to the ESPP.
In 2020, the following shares were issued to employees under the ESPP:
Year Ended December 31, 2020
(in thousands,
except per share amount)
Number of shares203,055
Average price paid per share$167.93 
Employee Benefits
The Company has a 401(k) retirement plan (the “Vertex 401(k) Plan”) in which substantially all of its permanent U.S. employees are eligible to participate. Participants may contribute up to 60% of their annual compensation to the Vertex 401(k) Plan, subject to statutory limitations. The Company may declare discretionary matching contributions to the Vertex 401(k) Plan. The Company pays matching contributions in the form of cash. For the years ended December 31, 2020, 2019 and 2018, the Company contributed approximately $19.2 million, $15.8 million and $13.9 million to the plan, respectively.

N.Stock-based Compensation Expense
The Company recognizes share-based payments to employees as compensation expense using the fair value method. The fair value of stock options and shares purchased pursuant to the ESPP is calculated using the Black-Scholes option pricing model. The fair value of restricted stock units, including PSUs, and restricted stock is based on the intrinsic value on the date of grant. Stock-based compensation, measured at the grant date based on the fair value of the award, is typically recognized as expense ratably over the requisite service period.
The effect of stock-based compensation expense during the three years ended December 31, 2020 was as follows:
202020192018
(in thousands)
Stock-based compensation expense by line item:
Cost of sales
$5,579 $5,575 $4,543 
Research and development expenses262,690 224,558 203,112 
Sales, general and administrative expenses
161,192 130,356 117,392 
Total stock-based compensation expense included in costs and expenses
429,461 360,489 325,047 
Income tax effect
(146,959)(124,225) 
Total stock-based compensation included in costs and expenses, net of tax$282,502 $236,264 $325,047 
The Company maintained a valuation allowance on the majority of its NOLs and other deferred tax assets until December 31, 2018. Therefore, there was no “Income tax effect” of stock-based compensation expense for the year ended December 31, 2018.
The stock-based compensation expense by type of award during the three years ended December 31, 2020 was as follows:
202020192018
(in thousands)
Stock-based compensation expense by type of award:
Restricted stock units (including PSUs) and restricted stock$360,364 $254,276 $207,845 
Stock options59,722 96,737 107,854 
ESPP share issuances12,984 11,196 9,933 
Stock-based compensation expense related to inventories(3,609)(1,720)(585)
Total stock-based compensation expense included in costs and expenses
$429,461 $360,489 $325,047 
F-39


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

The Company capitalizes stock-based compensation expense to inventories, all of which is attributable to employees who support the Company’s manufacturing operations for the Company’s products.
The following table sets forth the Company’s unrecognized stock-based compensation expense as of December 31, 2020, by type of award and the weighted-average period over which that expense is expected to be recognized:
As of December 31, 2020
Unrecognized Expense
Weighted-average Recognition Period
(in thousands)(in years)
Type of award:
Restricted stock units (including PSUs) and restricted stock$401,100 1.88
Stock options$62,392 1.77
ESPP share issuances$11,333 0.59
Stock Options
In each of the three years ended December 31, 2020, the Company issued stock options to its non-employee directors. In 2019 and 2018, the Company issued stock options with service conditions, which were generally the vesting periods of the awards, to its employees. The Company uses the Black-Scholes option pricing model to estimate the fair value of stock options at the grant date. The Black-Scholes option pricing model uses the option exercise price as well as estimates and assumptions related to the expected price volatility of the Company’s stock, the rate of return on risk-free investments, the expected period during which the options will be outstanding, and the expected dividend yield for the Company’s stock to estimate the fair value of a stock option on the grant date. The options granted during 2020, 2019 and 2018 had a weighted-average grant-date fair value per share of $88.37, $61.32 and $60.83, respectively.
The fair value of each option granted during 2020, 2019 and 2018 was estimated on the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions:
202020192018
Stock options granted22,6361,520,7432,297,328
Expected stock price volatility35.87%36.99%40.50%
Risk-free interest rate0.43%2.32%2.61%
Expected term of options (in years)4.674.274.55
Expected annual dividends
The weighted-average valuation assumptions were determined as follows:
Expected stock price volatility: Expected stock price volatility is calculated using the trailing one-month average of daily implied volatilities prior to the grant date. Implied volatility is based on options to purchase the Company’s stock with remaining terms of greater than one year that are regularly traded in the market.
Risk-free interest rate: The Company bases the risk-free interest rate on the interest rate payable on U.S. Treasury securities in effect at the time of grant for a period that is commensurate with the assumed expected option term.
Expected term of options: The expected term of options represents the period of time options are expected to be outstanding. The Company uses historical data to estimate employee exercise and post-vest termination behavior. The Company believes that all groups of employees exhibit similar exercise and post-vest termination behavior and therefore does not stratify employees into multiple groups in determining the expected term of options.
Expected annual dividends: The estimate for annual dividends is $0.00 because the Company has not historically paid, and does not intend for the foreseeable future to pay, a dividend.
F-40


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Restricted Stock Units and Performance-based Restricted Stock Units
The Company awards restricted stock units with service conditions, which are generally the vesting periods of the awards. As of December 31, 2020, the Company did not have any unvested restricted stock awards remaining, which it awarded until 2016.
The Company grants PSUs to certain members of senior management. Half of the PSUs contain financial goals as the performance metric and the other half contain non-financial goals. A target number of shares is established for each award, however the actual number of shares that are issued when an award vests may range from zero to 200% of the target amount depending upon the level of achievement of the applicable performance metric. The financial-based PSUs vest in three equal installments over a three-year period and are expensed ratably over that same period based upon an assessment of the likely level of achievement. The non-financial based PSUs cliff vest at the end of the three-year performance period and are expensed on a straight-line basis over that same period based upon an assessment of the likely level of achievement.
Employee Stock Purchase Plan
The weighted-average fair value of each purchase right granted during 2020, 2019 and 2018 was $65.88, $47.79 and $44.04, respectively. The following table reflects the weighted-average assumptions used in the Black-Scholes option pricing model for 2020, 2019 and 2018:
202020192018
Expected stock price volatility37.70%33.43%36.51%
Risk-free interest rate0.11%2.08%2.36%
Expected term (in years)0.710.740.75
Expected annual dividends
The expected stock price volatility for ESPP offerings is based on implied volatility. The Company bases the risk-free interest rate on the interest rate payable on U.S. Treasury securities in effect at the time of grant for a period that is commensurate with the assumed expected term. The expected term represents purchases and purchase periods that take place within the offering period. The expected annual dividends estimate is $0.00 because the Company has not historically paid, and does not for the foreseeable future intend to pay, a dividend.

O.Income Taxes
The components of income before provision for (benefit from) income taxes during the three years ended December 31, 2020 consisted of the following:
202020192018
(in thousands)
United States
$2,885,423 $1,263,379 $812,086 
Foreign
231,375 131,540 (211,845)
Income before provision for (benefit from) income taxes$3,116,798 $1,394,919 $600,241 
F-41


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

The components of the provision for (benefit from) income taxes during the three years ended December 31, 2020 consisted of the following:
202020192018
(in thousands)
Current taxes:
Federal
$71,377 $ $772 
Foreign
37,582 37,194 15,600 
State
18,851 13,528 9,018 
Total current taxes
127,810 50,722 25,390 
Deferred taxes:
Federal
510,220 184,312 (1,105,053)
Foreign
(239,579)(24,797)(364,919)
State
6,700 7,872 (42,280)
Total deferred taxes
277,341 167,387 (1,512,252)
Provision for (benefit from) income taxes$405,151 $218,109 $(1,486,862)
A reconciliation of the provision for (benefit from) income taxes as computed by applying the U.S. federal statutory rate of 21% for the three years ended December 31, 2020 to the provision for (benefit from) income taxes is as follows:
202020192018
(in thousands)
Income before provision for (benefit from) income taxes$3,116,798 $1,394,919 $600,241 
Expected provision for income taxes654,528 292,933 126,051 
State taxes, net of federal benefit18,596 8,478 8,680 
Foreign income tax rate differential5,433 6,178 23,427 
Tax credits(55,824)(59,459)(52,629)
Benefit from income taxes attributable to valuation allowances17,384 (2,672)(1,563,169)
Tax rate change
(37,688)  
Stock compensation (benefit), shortfalls and cancellations
(70,628)(56,324)(49,044)
Officer’s compensation
13,079 10,666 8,310 
Long-term intercompany receivable write-off(53,821)  
Deconsolidation of VIE
  (9,390)
Uncertain tax positions
39,808 14,070 15,431 
Inter-entity transfer of intellectual property rights
(209,000)  
U.S. deemed dividend71,727 79 64 
Other
11,557 4,160 5,407 
Provision for (benefit from) income taxes$405,151 $218,109 $(1,486,862)
The Company is subject to U.S. federal, state, and foreign income taxes. The Company’s provision for income taxes during the years ended December 31, 2020 and 2019, has increased compared to historical amounts due to the release of the Company’s valuation allowance on the majority of its net operating losses (“NOLs”) and other deferred tax assets as of December 31, 2018. Starting in 2019, the Company began recording a provision for income taxes approximating the statutory rates on its pre-tax income. The Company’s effective tax rate of 13% for 2020 was lower than the U.S. statutory rate primarily due to (i) discrete tax benefits associated with an intra-entity transfer of intellectual property rights to the United Kingdom (“U.K.”), the write-off of a long-term intercompany receivable, and an increase in the U.K.’s corporate tax rate; and (ii) excess tax benefits related to stock-based compensation. The impact of these items was partially offset by a U.S. deemed dividend. The Company’s effective tax rate of 16% for 2019 was lower than the U.S. statutory rate primarily due to excess tax benefits related to stock-based compensation and research and development tax credits. The Company utilized substantially all of its remaining previously benefited U.S. NOLs in 2020. As a result, a larger portion of the Company’s tax provision will represent a cash tax payable in future periods.
F-42


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

In the second quarter of 2020, the Company completed an intra-entity transfer of intellectual property rights to the U.K., resulting in a deferred tax benefit of $209.0 million. The Company expects to be able to utilize the deferred tax asset resulting from the intra-entity transfer.
In 2018, the change in the “Benefit from income taxes attributable to valuation allowances” was primarily related to the release of the Company’s valuation allowances on the majority of its NOLs and other deferred tax assets related to the U.S. and the U.K. The Company released these valuation allowances after determining it was more likely than not that its deferred tax assets would be realized in the future based on positive evidence, including significant cumulative consolidated and U.S. income over the three years ended December 31, 2018, revenue growth, clinical trial data from the Company’s triple combination regimens, competitor clinical progress and expectations regarding future profitability, and negative evidence, including the potential impact of competition on the Company’s projections and cumulative losses in one of the jurisdictions.
Deferred tax assets and liabilities are determined based on the difference between financial statement and tax bases using enacted tax rates in effect for the year in which the differences are expected to reverse. The components of the deferred taxes were as follows:
As of December 31,
20202019
(in thousands)
Deferred tax assets:
Net operating loss$140,563 $512,256 
Tax credit carryforwards406,120 549,543 
Intangible assets507,484 275,290 
Deferred revenues20,962 18,833 
Stock-based compensation89,203 85,199 
Accrued expenses47,326 44,367 
Finance lease liabilities118,749 119,160 
Operating lease assets65,046 13,114 
Other987 8,596 
Gross deferred tax assets1,396,440 1,626,358 
Valuation allowance(213,750)(205,192)
Total deferred tax assets1,182,690 1,421,166 
Deferred tax liabilities:
Property and equipment(116,955)(101,235)
Acquired intangibles(87,025)(87,160)
Unrealized gain(17,553)(28,838)
Operating lease liabilities(63,310)(13,118)
Other(15,068) 
Net deferred tax assets$882,779 $1,190,815 
On a periodic basis, the Company reassesses the valuation allowance on its deferred income tax assets, weighing positive and negative evidence to assess the recoverability of the deferred tax assets. As of December 31, 2020, the Company maintained a valuation allowance of $213.8 million related primarily to U.S. state and foreign tax attributes.
As of December 31, 2020, the Company had NOL carryforwards of $97.4 million, which are subject to annual utilization limitations, and tax credits of $249.2 million for U.S. federal income tax purposes. As of December 31, 2020, the Company had NOL carryforwards of $708.2 million and tax credits of $179.1 million for U.S. state income tax purposes. The U.S. federal NOLs may be carried forward indefinitely, with the exception of $29.1 million that will begin to expire in 2030. The state NOL carryforwards and tax credits expire at various dates through 2040 and may be used to offset future state income tax liabilities. As of December 31, 2020, the Company had foreign net operating loss carryforwards of $521.6 million, including $10.6 million that were subject to expiration at various dates through 2040 and $511.0 million that had an indefinite carryforward period.
F-43


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Unrecognized tax benefits during the three years ended December 31, 2020 were as follows:
202020192018
(in thousands)
Balance at beginning of the period$33,920 $19,549 $3,814 
Increases related to current period tax positions26,653 14,407 9,704 
Increases related to prior period tax positions26,732 598 6,031 
Decreases related to prior period tax positions (156) 
Settlement with tax authorities (478) 
Statute of limitations expiration
(657)  
Balance at end of period
$86,648 $33,920 $19,549 
As of December 31, 2020, the Company has classified $48.1 million and $38.5 million of its unrecognized tax benefits as credits to “Deferred tax assets” and “Accrued expenses,” respectively, on its consolidated balance sheet.
The Company has reviewed the tax positions taken, or to be taken, in its tax returns for all tax years currently open to examination by a taxing authority. Unrecognized tax benefits represent the aggregate tax effect of differences between tax return positions and the benefits recognized in the consolidated financial statements. As of December 31, 2020, 2019 and 2018, the Company had $75.8 million, $33.9 million and $19.5 million, respectively, of net unrecognized tax benefits, which would affect the Company’s tax rate if recognized. The Company does not expect that its unrecognized tax benefits will materially change within the next twelve months. The Company accrues interest and penalties related to unrecognized tax benefits as a component of its “Provision for (benefit from) income taxes.” The Company did not recognize any material interest or penalties related to uncertain tax positions during the three years ended December 31, 2020.
In March 2020, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) was signed into law. The CARES Act includes provisions relating to several aspects of corporate income taxes. The CARES Act did not have a significant impact on the Company’s provision for income taxes.
As of December 31, 2020, foreign earnings, which were not significant, have been retained by the Company’s foreign subsidiaries for indefinite reinvestment. Upon repatriation of those earnings, in the form of dividends or otherwise, the Company could be subject to withholding taxes payable to the various foreign countries.
The Company files U.S. federal income tax returns and income tax returns in various state, local and foreign jurisdictions. The Company is no longer subject to any tax assessment from an income tax examination in the U.S. or any other major taxing jurisdiction for years before 2011, except where the Company has NOLs or tax credit carryforwards that originate before 2011. The Company has various income tax audits ongoing at any time throughout the world.

P.Commitments and Contingencies
Revolving Credit Facilities
The Company and certain of its subsidiaries have entered into two credit agreements (the “Credit Agreements”) with Bank of America, N.A., as administrative agent and the lenders referred to therein (the “Lenders”). The Credit Agreements were not drawn upon at closing and the Company has not drawn upon them to date. Amounts drawn pursuant to the Credit Agreements, if any, will be used for general corporate purposes. Any amounts borrowed under the Credit Agreements will bear interest, at the Company’s option, at either a base rate or a Eurocurrency rate, in each case plus an applicable margin based on the Company’s consolidated leverage ratio (the ratio of the Company’s total consolidated funded indebtedness to the Company’s consolidated EBITDA for the most recently completed four fiscal quarter period).
In September 2019, the Company and certain of its subsidiaries entered into a $500.0 million unsecured revolving facility (the “2019 Credit Agreement”) with the Lenders, which matures on September 17, 2024. The 2019 Credit Agreement superseded the Company’s credit agreement entered into in 2016 with Bank of America, N.A serving in the same capacity. Under the 2019 Credit Agreement, the applicable margins on base rate loans range from 0.125% to 0.500% and the
F-44


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

applicable margins on Eurocurrency loans range from 1.125% to 1.500%. The 2019 Credit Agreement provides a sublimit of $50.0 million for letters of credit.
In September 2020, the Company and certain of its subsidiaries entered into a $2.0 billion unsecured revolving facility (the “2020 Credit Agreement”) with the Lenders, which matures on September 18, 2022. Under the 2020 Credit Agreement, the applicable margins on base rate loans range from 0.500% to 0.875% and the applicable margins on Eurocurrency loans range from 1.500% to 1.875%. The 2020 Credit Agreement does not support the issuance of letters of credit.
Subject to satisfaction of certain conditions, the Company may request that the borrowing capacity for each of the Credit Agreements be increased by an additional $500.0 million. Any amounts borrowed pursuant to the Credit Agreements are guaranteed by certain of the Company’s existing and future domestic subsidiaries, subject to certain exceptions.
The Credit Agreements contain customary representations and warranties and affirmative and negative covenants, including financial covenants to maintain (x) subject to certain limited exceptions, a consolidated leverage ratio of 3.50 to 1.00, subject to an increase to 4.00 to 1.00 following a material acquisition and (y) a consolidated interest coverage ratio of 2.50 to 1.00, in each case measured on a quarterly basis. As of December 31, 2020, the Company was in compliance with the covenants described above. The Credit Agreements also contain customary events of default. In the case of a continuing event of default, the administrative agent would be entitled to exercise various remedies, including the acceleration of amounts due under outstanding loans.
Direct costs related to the Credit Agreements, which were not material to the Company’s financial statements, were deferred and recorded over the term of the Credit Agreements.
Guaranties and Indemnifications
As permitted under Massachusetts law, the Company’s Articles of Organization and By-laws provide that the Company will indemnify certain of its officers and directors for certain claims asserted against them in connection with their service as an officer or director. The maximum potential amount of future payments that the Company could be required to make under these indemnification provisions is unlimited. However, the Company has purchased directors’ and officers’ liability insurance policies that could reduce its monetary exposure and enable it to recover a portion of any future amounts paid. No indemnification claims currently are outstanding, and the Company believes the estimated fair value of these indemnification arrangements is minimal.
The Company customarily agrees in the ordinary course of its business to indemnification provisions in agreements with clinical trial investigators and sites in its drug development programs, sponsored research agreements with academic and not-for-profit institutions, various comparable agreements involving parties performing services for the Company, and its real estate leases. The Company also customarily agrees to certain indemnification provisions in its drug discovery, development and commercialization collaboration agreements. With respect to the Company’s clinical trials and sponsored research agreements, these indemnification provisions typically apply to any claim asserted against the investigator or the investigator’s institution relating to personal injury or property damage, violations of law or certain breaches of the Company’s contractual obligations arising out of the research or clinical testing of the Company’s compounds or drug candidates. With respect to lease agreements, the indemnification provisions typically apply to claims asserted against the landlord relating to personal injury or property damage caused by the Company, to violations of law by the Company or to certain breaches of the Company’s contractual obligations. The indemnification provisions appearing in the Company’s collaboration agreements are similar to those for the other agreements discussed above, but in addition provide some limited indemnification for its collaborator in the event of third-party claims alleging infringement of intellectual property rights. In each of the cases above, the indemnification obligation generally survives the termination of the agreement for some extended period, although the Company believes the obligation typically has the most relevance during the contract term and for a short period of time thereafter. The maximum potential amount of future payments that the Company could be required to make under these provisions is generally unlimited. The Company has purchased insurance policies covering personal injury, property damage and general liability that reduce its exposure for indemnification and would enable it in many cases to recover all or a portion of any future amounts paid. The Company has never paid any material amounts to defend lawsuits or settle claims related to these indemnification provisions. Accordingly, the Company believes the estimated fair value of these indemnification arrangements is minimal.
F-45


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Other Contingencies
The Company has certain contingent liabilities that arise in the ordinary course of its business activities. The Company accrues a reserve for contingent liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. There were no material contingent liabilities accrued as of December 31, 2020 or 2019.

Q.Segment Information
Segment reporting is prepared on the same basis that the Company’s chief executive officer, who is the Company’s chief operating decision maker, manages the business, makes operating decisions and assesses performance. The Company operates in one segment, pharmaceuticals. Enterprise-wide disclosures about revenues, significant customers, and property and equipment, net by location are presented below.
Revenues by Product
Product revenues, net consisted of the following:
202020192018
(in thousands)
TRIKAFTA/KAFTRIO$3,863,824 $420,105 $ 
SYMDEKO/SYMKEVI628,577 1,417,668 768,657 
ORKAMBI907,512 1,331,891 1,262,166 
KALYDECO802,870 991,062 1,007,502 
Total product revenues, net$6,202,783 $4,160,726 $3,038,325 
Revenues by Geographic Location
Net product revenues are attributed to countries based on the location of the customer. Collaborative and royalty revenues are attributed to countries based on the location of the Company’s subsidiary associated with the collaborative arrangement related to such revenues. Total revenues from external customers and collaborators by geographic region consisted of the following:
202020192018
(in thousands)
United States$4,829,282 $3,062,555 $2,365,079 
Outside of the United States
Europe1,126,460 885,762 543,179 
Other
249,941 214,504 139,339 
Total revenues outside of the United States
1,376,401 1,100,266 682,518 
Total revenues
$6,205,683 $4,162,821 $3,047,597 
F-46


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Significant Customers
Gross product revenues and accounts receivable from each of the Company’s customers who individually accounted for 10% or more of total gross product revenues and/or 10% or more of total accounts receivable consisted of the following:
Percent of
Total Gross Product Revenues
Percent of
Accounts Receivable
Year Ended December 31,
As of December 31,
20202019201820202019
McKesson Corporation20 %17 %14 %14 %22 %
Accredo/Curascript15 %14 %14 %10 %15 %
Walgreen Co.14 %15 %20 %10 %14 %
Lloyds Pharmacy*<10%<10%<10%19 %<10%
*A wholly-owned subsidiary of McKesson Corporation in the U.K.
Long-lived Assets by Location
Long-lived assets by location consisted of the following:
As of December 31,
20202019
(in thousands)
United States$1,207,748 $768,572 
Outside of the United States
United Kingdom61,462 57,383 
Other14,888 7,327 
Total long-lived assets outside of the United States76,350 64,710 
      Total long-lived assets$1,284,098 $833,282 

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VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

R.Quarterly Financial Data (unaudited)
The following tables set forth the Company’s quarterly financial data for the two years ended December 31, 2020:
Three Months Ended
March 31,
2020
June 30,
2020
September 30,
2020
December 31,
2020
(in thousands, except per share amounts)
Revenues:
Product revenues, net$1,515,107 $1,524,485 $1,536,271 $1,626,920 
Collaborative and royalty revenues
  2,000 900 
Total revenues
1,515,107 1,524,485 1,538,271 1,627,820 
Costs and expenses:
Cost of sales
162,497 184,520 186,182 203,101 
Research and development expenses (1)448,528 420,928 493,497 466,584 
Sales, general and administrative expenses
182,258 191,804 184,551 211,843 
Change in fair value of contingent consideration
1,600 9,200 1,800 500 
Total costs and expenses
794,883 806,452 866,030 882,028 
Income from operations720,224 718,033 672,241 745,792 
Interest income12,576 4,243 3,100 2,320 
Interest expense(14,136)(13,871)(13,856)(16,288)
Other (expense) income, net (2)(61,130)116,365 84,386 156,799 
Income before provision for income taxes657,534 824,770 745,871 888,623 
Provision for (benefit from) income taxes (3)54,781 (12,500)78,437 284,433 
Net income attributable to Vertex
$602,753 $837,270 $667,434 $604,190 
Amounts per share attributable to Vertex common shareholders:
Net income:
    Basic
$2.32 $3.22 $2.56 $2.32 
    Diluted
$2.29 $3.18 $2.53 $2.30 
Shares used in per share calculations:
    Basic
259,815 259,637 260,392 260,038 
    Diluted
263,515 263,403 264,079 263,106 
F-48


VERTEX PHARMACEUTICALS INCORPORATED
Notes to Consolidated Financial Statements (Continued)

Three Months Ended
March 31,
2019
June 30,
2019
September 30,
2019
December 31,
2019
(in thousands, except per share amounts)
Revenues:
Product revenues, net (4)$857,253 $940,380 $949,828 $1,413,265 
Collaborative and royalty revenues
1,182 913   
Total revenues
858,435 941,293 949,828 1,413,265 
Costs and expenses:
Cost of sales
95,092 135,740 131,914 185,012 
Research and development expenses (1)339,490 379,091 555,948 480,011 
Sales, general and administrative expenses
147,045 156,502 159,674 195,277 
Change in fair value of contingent consideration
  2,959 1,500 
Total costs and expenses
581,627 671,333 850,495 861,800 
Income from operations276,808 269,960 99,333 551,465 
Interest income15,615 18,076 17,628 12,359 
Interest expense(14,868)(14,837)(14,548)(14,249)
Other income (expense), net (2)42,610 53,939 (31,747)127,375 
Income before provision for income taxes320,165 327,138 70,666 676,950 
Provision for income taxes51,534 59,711 13,148 93,716 
Net income attributable to Vertex
$268,631 $267,427 $57,518 $583,234 
Amounts per share attributable to Vertex common shareholders:
Net income:
    Basic
$1.05 $1.04 $0.22 $2.26 
    Diluted $1.03 $1.03 $0.22 $2.23 
Shares used in per share calculations:
    Basic255,695 256,154 256,946 258,003 
    Diluted260,175 259,822 260,473 262,108 
1.The Company incurred research and development expenses of $75.0 million related to its 2020 Moderna Agreement in the third quarter of 2020 and $175.0 million related to its CRISPR DMD/DM1 Agreement in the third quarter of 2019. See Note B, “Collaborative Arrangements.”
2.In 2020 and 2019, “Other income (expense), net” was primarily related to changes in the fair value of the Company’s investments in corporate equity securities, and from sales of certain corporate equity securities. See Note E, “Marketable Securities and Equity Investments.”
3.In the second quarter of 2020, the Company completed an intra-entity transfer of intellectual property rights to the U.K., resulting in a deferred tax benefit of $209.0 million. See Note O, “Income Taxes.”
4.In the fourth quarter of 2019, the Company updated its transaction price and recognized net product revenues of $155.8 million related to prior period ORKAMBI sales upon reaching a reimbursement agreement with the French government for ORKAMBI, including ORKAMBI distributed through early access programs. See Note A, “Nature of Business and Accounting Policies.”
F-49