0001193125-14-285841 Sample Contracts

OMNIBUS AMENDMENT TO AWARD AGREEMENTS

U.S. Silica Holdings, Inc. • July 30th, 2014 • Mining & quarrying of nonmetallic minerals (no fuels)

• Company
  U.S. Silica Holdings, Inc.
• Filed
  July 30th, 2014
• Industry
  Mining & quarrying of nonmetallic minerals (no fuels)

Reference is hereby made to the following equity award agreements previously entered into by and between you and U.S. Silica Holdings, Inc. (the “Company”) under the Company’s 2011 Incentive Compensation Plan (collectively, the “Award Agreements”):

AMENDMENT NO. 1 TO RESTRICTED STOCK AGREEMENT

Restricted Stock Agreement • July 30th, 2014 • U.S. Silica Holdings, Inc. • Mining & quarrying of nonmetallic minerals (no fuels)

• Contract Type
  Restricted Stock Agreement
• Filed
  July 30th, 2014
• Company
  U.S. Silica Holdings, Inc.
• Industry
  Mining & quarrying of nonmetallic minerals (no fuels)

THIS AMENDMENT NO. 1 TO RESTRICTED STOCK AGREEMENT (this “Amendment”) is made and entered into as of July 25, 2014, by and between U.S. Silica Holdings, Inc. (the “Company”) and Bryan A. Shinn (the “Participant”).