Tetra Technologies, Inc.

Mark E. Baldwin

Director

Mr. Baldwin has served as a member of our Board of Directors since January 2014 and as Chairman of our Audit Committee since May 2014. Mr. Baldwin served as the executive vice president and chief financial officer of Dresser-Rand Group, Inc., a public company subject to the reporting requirements of the Securities Exchange Act of 1934 (the "Exchange Act"), from August 2007 until his retirement in May 2013. Prior to joining Dresser-Rand, he served as the executive vice president, chief financial officer, and treasurer of Veritas DGC Inc., a public company subject to the reporting requirements of the Exchange Act, from August 2004 through February 2007, and operating partner at First Reserve Corporation from April 2003 through July 2004. Mr. Baldwin served as executive vice president and chief financial officer for NextiraOne from October 2001 through August 2002, and as chairman of the board and chief executive officer for Pentacon Inc. from 1997 through 2001. From 1980 through 1997, Mr. Baldwin served in a variety of finance and operations positions with Keystone International Inc., including treasurer, chief financial officer, and president of the Industrial Valves and Controls Group. Mr. Baldwin currently serves as a director and as a member of the audit committee of KBR, Inc., a public company subject to the requirements of the Exchange Act, and as a director of Nine Energy Service, Inc., a private company providing completions, wireline, and cementing services. He previously served as a director of Seahawk Drilling Inc. from August 2009 until February 2011. Mr. Baldwin has a B.S. in Mechanical Engineering from Duke University and an MBA from Tulane University.