FREDERICK, Md.--(BUSINESS WIRE)--U.S. Silica Holdings, Inc. announced today that it has commenced an initial public offering of 11,764,705 shares of its common stock pursuant to a registration statement on Form S-1 filed with the U.S. Securities and Exchange Commission. U.S. Silica Holdings, Inc. is offering 2,941,176 shares of its common stock and the selling stockholder is offering 8,823,529 shares of common stock. The underwriters will be granted a 30-day over-allotment option to purchase up to 1,764,706 additional shares from the selling stockholder.

Morgan Stanley & Co. LLC, BofA Merrill Lynch and Jefferies & Company, Inc. are acting as joint book-running managers for the offering. Simmons & Company International, Dahlman Rose & Company, LLC, BB&T Capital Markets, a division of Scott & Stringfellow, LLC, BNP Paribas Securities Corp., Lazard Capital Markets LLC and Moelis & Company LLC are acting as co-managers for the offering. The offering is being made by means of a prospectus, copies of which may be obtained by sending a request to one of the following: Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, New York 10014, Telephone: 866-718-1649, Email: prospectus@morganstanley.com; BofA Merrill Lynch, Attention: Prospectus Department, 4 World Financial Center, New York, New York 10080, Email: dg.prospectus_requests@baml.com; and Jefferies & Company, Inc., Attention: Equity Syndicate Prospectus Department, 520 Madison Avenue, 12th Floor, New York, New York 10022, Telephone: 877-547-6340, Email: prospectus_department@jefferies.com.

A registration statement relating to these securities has been filed with the U.S. Securities and Exchange Commission, but has not yet become effective. These securities may not be sold, nor may offers to buy be accepted, prior to the time that the registration statement becomes effective. This press release shall not constitute an offer to sell or the solicitation of any offer to buy nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About U.S. Silica Holdings, Inc.

U.S. Silica Holdings, Inc., a??Delaware??corporation, is the second largest domestic producer of commercial silica, a specialized mineral that is a critical input into the oil and gas proppants end market and a variety of attractive industrial and specialty products end markets. During its 111-year history, U.S. Silica Holdings has developed core competencies in mining, processing, logistics and materials science that enable it to produce and cost-effectively deliver over 200 products to customers across these end markets. U.S. Silica Holdings is headquartered in??Frederick, Maryland.