U.S. Silica Holdings, Inc. (NYSE:SLCA) Files An 8-K Regulation FD Disclosure
Item 7.01 Regulation FD Disclosure.

A copy of material that will be used in investor presentations delivered by representatives of U.S. Silica Holdings, Inc. (the “Company”) beginning on July6, 2017, is available under “Events& Presentations” in the Investors section of the Company’s website at www.ussilica.com. This material shall not be deemed “filed” for purposes of Section18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section and shall not be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act.

About U.S. Silica Holdings, Inc. (NYSE:SLCA)

U.S. Silica Holdings, Inc. (U.S. Silica) is a domestic producer of commercial silica, a specialized mineral that is an input into a range of end markets. The Company operates in two segments: Oil & Gas Proppants, and Industrial & Specialty Products. In the Oil & Gas Proppants segment, the Company serves the oil and gas recovery market providing fracturing sand, or frac sand. The Industrial & Specialty Products segment consists of over 250 products and materials. In its end market, oil and gas proppants, its frac sand is used to stimulate and maintain the flow of hydrocarbons in oil and natural gas wells. Its silica is also used as an irreplaceable raw material in a range of industrial applications, including glassmaking and chemical manufacturing. The Company produces and sells a range of commercial silica products, including whole grain and ground products, as well as other industrial mineral products.