Christopher J. Baker

President, Chief Executive Officer and Director

Mr. Baker has served as Executive Vice President and Chief Operating Officer of the Company since its formation, and has served in the same role at Quintana Energy Services LP since November 2014. Mr. Baker previously served as Managing Director-Oilfield Services of the Quintana private equity funds, where he was responsible for sourcing, evaluating and executing oilfield service investments, as well as overseeing the growth of and managing and monitoring the activities of Quintana's oilfield service portfolio companies since 2008. Prior to joining Quintana, Mr. Baker served as an Associate with Citigroup Global Markets Inc.'s ("Citi") Corporate and Investment Bank where he conducted corporate finance and valuation activities focused on structuring non-investment grade debt transactions in the energy sector. Prior to his time at Citi, Mr. Baker was Vice President of Operations for Theta II Enterprises, Inc. where he focused on project management of complex subsea and inland marine pipeline construction projects. Mr. Baker attended Louisiana State University, where he earned a B.S. in Mechanical Engineering, and Rice University, where he earned an M.B.A.

Keefer M. Lehner

Executive Vice President and Chief Financial Officer

Mr. Lehner has served as Executive Vice President and Chief Financial Officer of the Company since its formation. Mr. Lehner has served in that same role at Quintana Energy Services LP since January 2017 and previously served as Quintana Energy Services LP's Vice President, Corporate Development of Quintana Energy Services LP's general partner since November 2014. Mr. Lehner previously served in various positions at the Quintana private equity funds, including Vice President, from 2010 to 2014, where he was responsible for sourcing, evaluating and executing investments, as well as managing and monitoring the activities of Quintana's portfolio companies. During his tenure at Quintana, Mr. Lehner monitored and advised the growth of COWS and DDC. Prior to joining Quintana in 2010, Mr. Lehner worked in the investment banking division of Simmons & Company International, where he focused on mergers, acquisitions and capital raises for public and private clients engaged in all facets of the energy industry. Mr. Lehner attended Villanova University, where he earned a B.S.B.A. in Finance.

Max L. Bouthillette

Executive Vice President, General Counsel and Chief Compliance Officer

Mr. Bouthillette has served as Executive Vice President, General Counsel and Chief Compliance Officer of the Company since its formation. Mr. Bouthillette served on Quintana Energy Services LP's board of directors from April 2016 to July 2017. Prior to joining the Company, Mr. Bouthillette was with Archer Limited, one of our Principal Stockholders, where he served as Executive Vice President and General Counsel from 2010 to 2017 and additionally as President of Archer's operations in South and North America since 2016. Mr. Bouthillette has more than 23 years of legal experience for oilfield services companies, and previously served as Chief Compliance Officer and Deputy General Counsel for BJ Services from 2006 to 2010, as a partner with Baker Hostetler LLP from 2004 to 2006 and with Schlumberger in North America (Litigation Counsel), Asia (OFS Counsel) and Europe (General Counsel Products) from 1998 to 2003. Mr. Bouthillette holds a B.B.A in Accounting from Texas A&M University and a Juris Doctorate from the University of Houston Law Center.