Tetra Technologies, Inc.
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Joseph C. Winkler III
Director

Mr. Winkler has served as a member of our Board of Directors since August 2015 and currently serves on our Audit Committee. Mr. Winkler served as chairman and chief executive officer of Complete Production Services Inc. from March 2007 until February 2012, at which time he retired in connection with the acquisition of Complete by Superior Energy Services, Inc. From June 2005 to March 2007, Mr. Winkler served as Complete’s president and chief executive officer. Prior to that, from March 2005 to June 2005, Mr. Winkler served as the executive vice president and chief operating officer of National Oilwell Varco, Inc. and from May 2003 until March 2005, as the president and chief operating officer of such company’s predecessor, Varco International, Inc. From April 1996 until May 2003, Mr. Winkler served in various other senior management capacities with Varco and its predecessor. From 1993 to April 1996, Mr. Winkler served as the chief financial officer of D.O.S., Ltd., a privately held company that was acquired by Varco International in April 1996. Prior to joining D.O.S., Ltd., Mr. Winkler served as chief financial officer of Baker Hughes INTEQ, and served in a similar role for various companies owned by Baker Hughes Incorporated. Mr. Winkler has served as a director of the general partner of Hi-Crush Partners LP since 2012, as a director of Commercial Metals Company since 2012, and as a director of Eclipse Resources Corporation since 2014, all of which are publicly traded companies subject to the reporting requirements of the Exchange Act. Mr. Winkler also served on the board of Dresser-Rand Group, Inc. from 2007 until its merger with Siemens AG in July 2015. Mr. Winkler received a B.S. degree in Accounting from Louisiana State University.