KATY, Texas, April 6, 2023 /PRNewswire/ -- U.S. Silica Holdings, Inc. (NYSE: SLCA) today released its Sustainability Report, summarizing the Company's sustainability activities, performance, and results for calendar year 2022. The enhanced report incorporates discussions regarding the Company's governance and strategy around climate-related risks and opportunities and begins to map U.S. Silica's sustainability efforts and priorities to the United Nations Sustainable Development Goals. Additionally, the Company conducted its first materiality assessment to help define its material priorities and topic areas to advance its comprehensive approach to managing environmental, social, and governance impacts.

This report tracks and discloses U.S. Silica's second year of a three-year data collection process, specifically for greenhouse gas emissions, water, and waste data, for the establishment of baseline values for future reduction targets to be announced in the 2023 report.

2022 Key Highlights

• Achieved the safest year in Company history with a 9% year-over-year improvement in its Total Reportable Incident Rate
• Reported a 5% year-over-year reduction in greenhouse gas emissions on a per ton basis
• 11% of the Industrial and Specialty Products segment product revenues were generated from offerings that go into sustainable end uses with environmental benefits to society
• Increased racial and ethnic minority representation by 2% across management roles
• The Company maintained supplier diversity spend at levels over two times above the national average for the manufacturing industry

Bryan Shinn, Chief Executive Officer stated, "We are making progress on our five-year corporate goals and are one year away from completing our baseline value assessments for the establishment of emission reduction targets. I am very proud of our team's environmental, social, and governance accomplishments in 2022 and I'd like to thank our employees, customers, communities, and other stakeholders for their continued support of U.S. Silica. We are committed to living our core values and will continue to focus on practicing safe production and environmentally conscious and sustainable business practices."

About U.S. SilicaU.S. Silica Holdings, Inc. is a global performance materials company and is a member of the Russell 2000. The Company is a leading producer of commercial silica used in the oil and gas industry and in a wide range of industrial applications. Over its 123-year history, U.S. Silica has developed core competencies in mining, processing, logistics and materials science that enable it to produce and cost-effectively deliver over 600 diversified products to customers across our end markets. U.S. Silica's wholly-owned subsidiaries include EP Minerals and SandBox Logistics™. EP Minerals is an industry leader in the production of products derived from diatomaceous earth, perlite, engineered clays, and non-activated clays. SandBox Logistics™ is a state-of-the-art leader in proppant storage, handling and well-site delivery, dedicated to making proppant logistics cleaner, safer and more efficient. The Company has 27 operating mines and processing facilities and two additional exploration stage properties across the United States and is headquartered in Katy, Texas.

Forward-looking StatementsThis press release contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act") and Section 27A of the Securities Act of 1933, as amended. All statements other than statements of historical fact are forward-looking statements, including information related to sustainability goals and commitments, targets and timelines for achievement and environmental impact reduction goals. Forward-looking statements give our current expectations and projections relating to our financial condition, results of operations, plans, objectives, future performance and business. These statements may include words such as "anticipate," "estimate," "expect," "project," "plan," "intend," "believe," "may," "will," "should," "could," "can have," "likely" and other words and terms of similar meaning. All forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially from those that we expect. These risks and uncertainties include, but are not limited to, those described in Part I, "Item 1A. Risk Factors" and elsewhere in our latest Annual Report on Form 10-K and those described from time to time in our future reports filed with the Securities and Exchange Commission (the "SEC"). The forward-looking statements included herein are made only as of the date hereof. We disclaim any intention or obligation to update publicly or revise such statements, whether as a result of new information, future events or otherwise. All written and oral forward-looking statements attributable to us, or persons acting on our behalf, are expressly qualified in their entirety by these cautionary statements as well as other cautionary statements that are made from time to time in our other filings with the SEC, and our other public communications.

U.S. Silica Holdings, Inc.

Investor ContactPatricia GilVice President, Investor Relations & Sustainability281-505-6011gil@ussilica.com

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SOURCE U.S. Silica Holdings, Inc.