Keefer M. Lehner

Keefer M. Lehner became the Executive Vice President and Chief Financial Officer of KLXE upon completion of the merger with QES in July 2020. Previously, Mr. Lehner served as Executive Vice President and Chief Financial Officer of QES since its formation in 2017 through July 2020. 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, Finance and 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 the predecessors to QES. 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.