X0206 3 2019-11-07 0 0001524741 U.S. SILICA HOLDINGS, INC. SLCA 0001652468 USSERY JAMES DEREK 24275 KATY FREEWAY SUITE 600 KATY TX 77494 0 1 0 0 President Oil and Gas Common Stock 59777 D Includes 42,123 Restricted Stock Units granted on January 15, 2019 which will vest in three equal installments on the anniversaries of the grant date, and 17,429 Restricted Stock Units granted on February 12, 2019 which will vest in three equal installments on the anniversaries of the grant date. /s/ Matthew Rinegar, Attorney-in-Fact 2019-11-15