Exhibit 99.1

GLATFELTER REPORTS SECOND QUARTER 2021 RESULTS

~ Successful Mount Holly integration contributed favorably to Q2 results

~ Acquisition of Jacob Holm will add scale and new technologies, enhancing engineered materials portfolio

CHARLOTTE, North Carolina – August 3, 2021: Glatfelter Corporation (NYSE: GLT), a leading global supplier of engineered materials, today reported net income for the three months ended June 30, 2021 of $1.5 million, or $0.03 per diluted share, compared with a loss of $2.3 million, or a loss of $0.05 per share, in the same period a year ago. The results include the acquisition of Georgia-Pacific’s U.S. nonwovens business (“Mount Holly”) effective May 13, 2021. Adjusted earnings from continuing operations for the three months ended June 30, 2021 and 2020, were $8.0 million, or $0.18 per share, compared with $9.9 million, or $0.22 per share, respectively. Adjusted earnings is a non-GAAP financial measure for which a reconciliation to the nearest GAAP-based measure is provided within this release. Consolidated net sales for the three months ended June 30, 2021 totaled $244.9 million, compared with $216.2 million for the same period in 2020. On a constant currency basis, net sales for Composite Fibers and Airlaid Materials (including Mount Holly) increased by 7.1% and 5.0%, respectively.

“Despite entering the second quarter expecting continued softer demand from customer destocking, Airlaid Materials recorded higher than expected volume growth driven by a rebound in tabletop products as in-person dining began to recover globally,” said Dante C. Parrini, Chairman and Chief Executive Officer. “The higher volumes, combined with increased production and a strong contribution from Mount Holly, propelled Glatfelter to deliver positive overall results compared to expectations.”

Mr. Parrini added, “In Composite Fibers, shipments were up slightly from the first quarter and our team continues to successfully implement the cost-related price increases we announced earlier this year. While our pricing actions only partially offset the rise in costs of raw materials, energy, and freight, we expect the benefit of our price increases to be more fully realized in the second half of 2021, further counteracting inflationary pressures in this segment. We remain disciplined in our approach toward managing costs throughout the entire supply chain while ensuring continued and timely delivery of high-quality products to our customers.”

Mr. Parrini concluded, “While we have been navigating the dynamic supply and demand environment stemming from the pandemic, our team remains committed to Glatfelter’s ongoing business transformation by making significant progress in executing our growth strategy. The newly-acquired Mount Holly facility made an immediate contribution to our Airlaid segment, and it strategically positions us to participate in the growing demand within health and hygiene categories. Of additional importance, on July 22, we announced the acquisition of Jacob Holm, a global leading manufacturer of premium quality spunlace nonwovens. This transaction will further diversify our end markets and technologies, enhance our overall innovation capabilities and add meaningful scale to the Company.”  

Second Quarter Results

The following table sets forth a reconciliation of results on a GAAP basis to an adjusted earnings basis, a non-GAAP measure:

A description of each of the adjustments presented above is included later in this release.

Composite Fibers

Composite Fibers’ net sales increased $19.5 million or 15.9% in the second quarter of 2021, compared to the year-ago quarter, mainly driven by a 95% increase in our wallcover sales from the trough of the pandemic in 2020 and favorable currency translation of $10.7 million. Overall shipments, excluding metallized which was restructured in the second quarter of 2020, were up 26% versus the second quarter of 2020.

Composite Fibers’ operating income of $11.1 million was $0.4 million lower compared to the second quarter of 2020. Raw material and energy prices were $6.0 million higher than the same period last year and partly offset by approximately $2.0 million of price increases. In addition, higher sales volume for wallcover, electrical, and coffee products, combined with increased production to meet customer demand, fully offset input price inflation. The impact of currency and related hedging activity negatively impacted earnings by $0.6 million.

Airlaid Materials

Airlaid Materials’ net sales increased $9.3 million in the year-over-year comparison, including six weeks of sales from Mount Holly. Shipments were 3.1% higher driven by Mount Holly as well as a significant increase in tabletop demand as in-person dining began to recover globally. These increases were partially offset by lower shipments in the hygiene and wipes categories related to customer destocking from elevated inventory levels maintained during the pandemic. Currency translation was $4.6 million favorable.

Airlaid Materials’ second quarter 2021 operating income of $8.4 million was $3.9 million lower when compared to the second quarter of 2020. Higher shipments were more than offset by unfavorable mix negatively impacting earnings by $0.9 million while operations were $1.9 million unfavorable driven by lower production to adjust to customer demand and manage inventory levels. Selling price increases due to raw material pass-through provisions were more than offset by higher raw material and energy prices, reducing earnings by net $0.8 million. The impact of currency and related hedging activity further negatively impacted earnings by $0.3 million.

Other Financial Information

The amount of “Other and Unallocated” operating expense in the table of Segment Financial Information totaled $11.4 million in the second quarter of 2021 compared with $14.7 million in the same period a year ago. Excluding the items identified to present “adjusted earnings,” unallocated expenses for the second quarter of 2021 decreased $1.9 million compared to the second quarter of 2020.

In the second quarter of 2021, income from continuing operations totaled $5.5 million and income tax expense totaled $4.0 million. On adjusted pre-tax income of $12.0 million, income tax expense was $4.0 million in the second quarter of 2021. The comparable amounts in the same quarter of 2020 were $14.5 million and $4.6 million, respectively. The effective tax rate on adjusted earnings was 33% in the second quarter of 2021.

Year-to-Date Results

The following table sets forth a reconciliation of results on a GAAP basis to an adjusted earnings basis, a non-GAAP measure:

A description of each of the adjustments presented above is included later in this release.

Balance Sheet and Other Information

Cash and cash equivalents totaled $84.2 million as of June 30, 2021, and net debt was $397.2 million compared with $213.9 million at the end of 2020. Net leverage increased to 3.1 times at June 30, 2021 versus 1.8 times at December 31, 2020. (Refer to the calculation of this measure provided in the tables at the end of this release).

Effective May 13, 2021, we completed our previously announced acquisition of Georgia-Pacific’s U.S. nonwovens business which consists of an airlaid manufacturing operation in Mount Holly, North Carolina, along with a nonwovens product development operation and associated employees in Memphis, Tennessee. The purchase price totaled $175 million, subject to customary purchase price adjustments. We financed the acquisition through a combination of cash-on-hand and $160 million of borrowings under our existing revolving credit facility.

Capital expenditures during the six months of 2021 and 2020 totaled $11.2 million and $12.0 million, respectively. Adjusted free cash flow for the first six months of 2021 was $(4.8) million compared with $1.6 million in the same period of 2020. (Refer to the calculation of measure provided in the tables at the end of this release).

Conference Call

As previously announced, the Company will hold a conference call today at 11:00 a.m. (Eastern) to discuss its second quarter results. The Company will make available on its Investor Relations website this quarter’s earnings release and an accompanying financial presentation that includes significant financial information to be discussed on the conference call including the Company’s outlook pertaining to financial performance. Information related to the conference call is as follows:

Interested persons who wish to hear the live webcast should go to the website prior to the starting time to register and ensure any necessary audio software is installed.

Glatfelter Corporation and subsidiaries

Consolidated Statements of Income

(unaudited)

Segment Financial Information

(unaudited)

Selected Financial Information

(unaudited)

Reconciliation of GAAP Financial Information to Non-GAAP Financial Information

This press release includes a measure of earnings before the effects of certain specifically identified items, which is referred to as adjusted earnings, a non-GAAP measure. The Company uses non-GAAP adjusted earnings to supplement the understanding of its consolidated financial statements presented in accordance with GAAP. Non-GAAP adjusted earnings is meant to present the financial performance of the Company’s core operations, which consist of the production and sale of composite fibers and airlaid materials. Management and the Company’s Board of Directors use non-GAAP adjusted earnings to evaluate the performance of the Company’s fundamental business in relation to prior periods and established business plans. For purposes of determining adjusted earnings, the following items are excluded:

Unlike net income determined in accordance with GAAP, non-GAAP adjusted earnings does not reflect all charges and gains recorded by the Company for the applicable period and, therefore, does not present a complete picture of the Company’s results of operations for the respective period. However, non-GAAP adjusted earnings provide a measure of how the Company’s core operations are performing, which management believes is useful to investors because it allows comparison of such operations from period to period. Non-GAAP adjusted earnings should not be considered in isolation from, or as a substitute for, measures of financial performance prepared in accordance with GAAP.

Caution Concerning Forward-Looking Statements  

Any statements included in this press release which pertain to future financial and business matters are “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. The Company uses words such as “anticipates”, “believes”, “expects”, “future”, “intends”, “plans”, “targets”, and similar expressions to identify forward-looking statements. Any such statements are based on the Company’s current expectations and are subject to numerous risks, uncertainties and other unpredictable or uncontrollable factors that could cause future results to differ materially from those expressed in the forward-looking statements including, but not limited to, the impacts of the COVID-19 pandemic, changes in industry, business, market, and economic conditions, demand for or pricing of its products, market growth rates and currency exchange rates. In light of these risks, uncertainties and other factors, the forward-looking matters discussed in this press release may not occur and readers are cautioned not to place undue reliance on these forward-looking statements. The forward-looking statements speak only as of the date of this press release and Glatfelter undertakes no obligation, and does not intend, to update these forward-looking statements to reflect events or circumstances occurring after the date of this press release. More information about these factors is contained in Glatfelter’s filings with the U.S. Securities and Exchange Commission, which are available at www.glatfelter.com.

About Glatfelter

Glatfelter is a leading global supplier of engineered materials. The Company’s high-quality, innovative and customizable solutions are found in tea and single-serve coffee filtration, personal hygiene and packaging products as well as home improvement and industrial applications. Headquartered in Charlotte, NC, the Company’s annualized net sales approximate $1 billion with customers in over 100 countries and approximately 2,550 employees worldwide. Operations include twelve manufacturing facilities located in the United States, Canada, Germany, France, the United Kingdom, and the Philippines. Additional information about Glatfelter may be found at www.glatfelter.com.