C. Christopher Gaut

Biography

Mr. Gaut serves as our Executive Chairman of the Board of Directors. He served as our Chief Executive Officer and Chairman of the board of directors from August 2010 until May 2017 and as one of our directors since December 2006. He served as a consultant to L.E. Simmons & Associates, Incorporated (“LESA”), the ultimate general partner of SCF-V, L.P., SCF 20212A, L.P., SCF-VI, L.P., SCF 2012B, L.P. and SCF-VII, L.P. (collectively, “SCF”), our largest stockholder, from November 2009 toAugust 2010. Mr. Gaut served at Halliburton Company, a leading diversified oilfield service company, as President of the Drilling and Evaluation Division and prior to that as Chief Financial Officer, from March 2003 through April 2009. From April 2009 through November 2009, Mr. Gaut was a private investor. Prior to joining Halliburton Company in 2003, Mr. Gaut was the Co-Chief Operating Officer of Ensco International, a provider of offshore contract drilling services. He also served as Ensco’s Chief Financial Officer from 1988 until 2003. Mr. Gaut is currently a member of the board of directors of Ensco Plc. Mr. Gaut holds an A.B. in Engineering Sciences from Dartmouth College and an M.B.A. from The Wharton School at the University of Pennsylvania. Mr. Gaut serves as our Executive Chairman of the Board of Directors. He served as our Chief Executive Officer and Chairman of the board of directors from August 2010 until May 2017 and as one of our directors since December 2006. He served as a consultant to L.E. Simmons & Associates, Incorporated (“LESA”), the ultimate general partner of SCF-V, L.P., SCF 20212A, L.P., SCF-VI, L.P., SCF 2012B, L.P. and SCF-VII, L.P. (collectively, “SCF”), our largest stockholder, from November 2009 toAugust 2010. Mr. Gaut served at Halliburton Company, a leading diversified oilfield service company, as President of the Drilling and Evaluation Division and prior to that as Chief Financial Officer, from March 2003 through April 2009. From April 2009 through November 2009, Mr. Gaut was a private investor. Prior to joining Halliburton Company in 2003, Mr. Gaut was the Co-Chief Operating Officer of Ensco International, a provider of offshore contract drilling services. He also served as Ensco’s Chief Financial Officer from 1988 until 2003. Mr. Gaut is currently a member of the board of directors of Ensco Plc. Mr. Gaut holds an A.B. in Engineering Sciences from Dartmouth College and an M.B.A. from The Wharton School at the University of Pennsylvania.

Research Interest

Engineering