Mr. McShane has served as the Chairman of our Board since February 2017 and as one of our directors since December 2012. Since September 2009, Mr. McShane has been an Operating Partner for Advent in the oil and natural gas services and equipment sector. Prior to his engagement with Advent, Mr. McShane was the Chairman and Chief Executive Officer of Grant Prideco Inc., a manufacturer and supplier of oilfield drill pipe and other drill stem products. Prior to joining Grant Prideco, Mr. McShane was Senior Vice President—Finance and Chief Financial Officer of BJ Services Company, a provider of pressure pumping, cementing, stimulation and coiled tubing services for oil and natural gas operators. Mr. McShane currently serves on the board of directors of Forum Energy Technologies, Inc. and previously served on the boards of directors of Enbridge Inc., Superior Energy Services, Inc. and Oasis Petroleum Inc.

Mr. Deane has served as one of our directors since December 2012 and served as Chairman of the Board from December 2012 to April 2016. Since October 2009, Mr. Deane has been an Operating Partner for Advent in the oil and natural gas industry, primarily in the services sector and serves on the board of directors of Variperm Energy Services and previously served on the board of directors of RGL Reservoir Management Inc. prior to its acquisition by Variperm Energy Services. Prior to his engagement with Advent, Mr. Deane served as President of ReedHycalog, L.P., Vice President of Schlumberger Limited, President of Hycalog and numerous executive and technical positions with Reed Tool Co. and Camco Intl. Mr. Deane has over 40 years of experience in the oil and natural gas industry, specializing in drilling technology. Mr. Deane holds a B.S. in Physics from the Colorado School of Mines.

Mr. Fitzgerald has served as one of our directors since February 2017. Mr. Fitzgerald has been a private investor since he retired from Grant Prideco, Inc. following its merger with National Oilwell Varco in 2008. He had served as Senior Vice President and Chief Financial Officer beginning in January 2004 and as Treasurer beginning in February 2007. Mr. Fitzgerald held the positions of Executive Vice President, Chief Financial Officer, and Treasurer of Veritas DGC from 2001 until January 2004. Mr. Fitzgerald also served as Vice President and Controller for BJ Services Company from 1989 to 2001. He previously served on the boards of directors of Independence Contract Drilling, Inc., Oasis Midstream Partners LP and Rosetta Resources, Inc. Mr. Fitzgerald began his career as a certified public accountant with the accounting firm of Ernst & Whinney. He holds a Bachelor of Business Administration in Accounting and a Masters in Accountancy from the University of Florida.

Mr. Grewal has served as one of our directors since December 2012. He is senior vice president of strategy at Rapid Micro Biosystems, a position he has held since March 2021. Prior to joining Rapid Micro Biosystems, Mr. Grewal was a managing director at Advent, from 2009 through February 2021, where he focused on investments in the energy and industrial sectors. Prior to joining Advent, Mr. Grewal was a vice president at Bain Capital where he was involved in investments in several large companies in the industrial, media and retail sectors. He previously served on the boards of Culligan International Group, BOS Solutions Ltd., Oleoducto Central S.A. (Ocensa), Quala and RGL Reservoir Management Inc. Mr. Grewal received an HBA from the Richard Ivey School of Business at the University of Western Ontario and an M.B.A. from Harvard Business School.

Mr. McKenna has served as one of our directors since December 2012. He is a managing partner of Advent and coordinates the firm’s investment efforts in the North American industrial sector. Mr. McKenna joined Advent in 1992 and for eight years held various positions, including head of the firm’s Hong Kong office. In 2000, he joined Bain Capital, where he spent three years as a senior dealmaker working on large investments in the industrial, retail and consumer sectors before rejoining Advent in 2003. Mr. McKenna currently serves on the board of directors of Serta Simmons Bedding LLC and previously served on the boards of ABC Supply Co. Inc., Aspen Technology Inc., Boart Longyear Limited, BOS Solutions Ltd., Bradco Supply, Culligan International Group, Keystone Automotive Operations Inc. and RGL Reservoir Management Inc. He holds an A.B. in English from Dartmouth College.

Ms. Mitchell has served as one of our directors since August 2019. She is the President of Troy Energy Exploration and Production, LLC, a position she has held since March 2020. Previously, Ms. Mitchell served as the Chief Executive Officer and member of the board of directors of Corterra Energy, LLC from December 2016 through November 2019. Prior to that, she served in various positions with Newfield Exploration Company from 2004 through 2016, including as the Vice President, Mid-Continent from February 2015 through August 2016, Vice President, Corporate Development from May 2014 through January 2015 and General Manager, Mid-Continent Region from December 2011 through April 2014. She holds a B.S. in Chemical Engineering from the University of Missouri. Ms. Mitchell has over 15 years of operational leadership experience in the oil and gas industry.

Mr. Nipper has served as one of our directors since December 2012. Mr. Nipper co-founded NCS and served as our Chief Executive Officer from November 2016 until November 2022 and from December 2012 until April 2016. He previously served as our Executive Chairman from April 2016 until February 2017. He has more than 30 years of industry experience and has invented several patented technologies relating to downhole oil and natural gas and geothermal service equipment. Prior to founding NCS, Mr. Nipper spent 18 years with Tri-State Oil Tools Inc. and Baker Hughes, including various operations and sales management positions. Prior to leaving Baker Hughes, he held the position of North American Marketing Manager.

Mr. Ralls has served as one of our directors since March 2017. Mr. Ralls previously served as Executive Chairman of Rowan Companies plc from April 2014 to April 2016, its Chief Executive Officer from January 2009 until April 2014, and its President and Chief Executive Officer from January 2009 to April 2013. Mr. Ralls served as Senior Vice President and Chief Financial Officer from 2001 to 2005 and as Executive Vice President and Chief Operating Officer of GlobalSantaFe Corporation from 2005 until the completion of the merger of GlobalSantaFe with Transocean, Inc. in 2007. Mr. Ralls previously served on the boards of Cabot Oil & Gas Corporation, Pacific Drilling, S.A., Superior Energy Services, Inc. and Rowan Companies plc as well as the boards of the American Petroleum Institute, the National Oceanic Industries Association and the International Association of Drilling Contractors.

Mr. Stromquist has served as one of our directors since January 2010. Mr. Stromquist co-founded NCS and served as Chief Operating Officer from January 2010 to June 2015, Chief Technology Officer from June 2015 to March 2016, Chief Executive Officer from March 2016 to November 2016 and President from November 2016 through April 2020. He has served in technical and management positions in the oil and natural gas industry for more than 35 years, in both service company and producer roles. He co-founded Cemblend Systems, Inc., which provided cementing solutions, and Frac Source, Inc., which specialized in stimulation services for unconventional reservoirs. He also served as operations manager of the well services group for Pioneer Natural Resources USA, Inc., and as technical manager for stimulation services for Halliburton Energy Services Canada. Mr. Stromquist currently serves on the boards of directors of Fluid Energy Group Ltd., RevSolz Corp and GeoGen Technologies, Inc. He holds numerous patents for completion-related tools, processes and downhole procedures, and he has authored numerous technical papers and articles.