US Silica Announces Timing of Earnings Release and Investor Call

KATY – US Silica Holdings, Inc. (NYSE: SLCA) today announced that it will release its fourth quarter 2021 financial results prior to the New York Stock Exchange opens on Friday, February 25, 2022.

Conference call

This press release will be followed by a conference call for investors on Friday, February 25, 2022 at 7:30 a.m. Central Time to discuss the results. The hosting of the call will be Bryan ShinPresident and CEO, and Don Merrill, Executive Vice President and Chief Financial Officer. Investors are invited to listen to a live webcast of the conference call by visiting the “Investors – Events and Presentations” section of the Company’s website at www.ussilica.com. The webcast will be archived for one year. The call can also be viewed live by phone by dialing (877) 869-3847 or for international callers, (201) 689-8261. A replay will be available shortly after the call and can be viewed by dialing (877) 660-6853 or for international callers, (201) 612-7415. The conference ID for the replay is 13726843. The replay will be available through March 25, 2022.

On American silica

US Silica Holdings, Inc. is a 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. During its 122-year history, American silica has developed core competencies in mining, processing, logistics and materials science that enable it to cost-effectively produce and deliver over 600 diverse products to customers in our end markets. American silica 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, artificial clays and non-activated clays. SandBox Logistics is a state-of-the-art leader in proppant storage, handling and delivery, dedicated to making proppant logistics cleaner, safer and more efficient. The Company currently operates 24 mines and production facilities and is headquartered in Katy, TX.

Contact:

Patricia Gil

Tel: (281) 505-6011

Email: gil@ussilica.com