Leadership

Curtis W. Huff — Mr. Huff has served as Chairman of the Board of Patterson-UTI since June 2020, as a director of Patterson-UTI since May 2001 and served as a director of UTI Energy Corp. ("UTI") from 1997 to May 2001. Mr. Huff is owner and Chairman of Freebird Partners, a private investment firm created in 2002 that is focused on oilfield service companies and technology. Mr. Huff co-founded Intervale Capital, an oilfield service private equity firm, in 2006 and served as a Managing Director from 2006 to 2012, when he sold his interest in the firm. Mr. Huff also serves as Chairman of Impact Fluid Solutions LP, which provides drilling and production solutions for oil and gas operators and fluid companies. Mr. Huff also serves as a director at various of Freebird’s portfolio companies. Mr. Huff served as the President and Chief Executive Officer of Grant Prideco, Inc., a provider of drill pipe and other drill stem products, from February 2001 to June 2002. From January 2000 to February 2001, Mr. Huff served as Executive Vice President, Chief Financial Officer and General Counsel of Weatherford International, Inc., one of the world’s largest international oilfield services companies. He served as Senior Vice President and General Counsel of Weatherford from May 1998 to January 2000. Mr. Huff began his professional career in 1983 with the law firm of Norton Rose Fulbright US LLP where he specialized in corporate, securities and merger and acquisition matters. Mr. Huff was made a partner in that firm in 1989 where he served until 1998 when he joined Weatherford. Mr. Huff holds a Bachelor of Arts degree and J.D. from the University of New Mexico, where he graduated as a member of the Order of the Coif and cum laude, and a Masters of Law from New York University School of Law. Mr. Huff is the Chairman of the Board of Directors of the University of St. Thomas in Houston, Texas and is actively involved with various charities, including the Houston Food Bank.

Ms. Beyer has served as a director of Patterson-UTI since September 2023. Ms. Beyer served as a member of NexTier’s board of directors from February 2023 to September 2023. Ms. Beyer served as the Chief Executive Officer of the Energy Workforce & Technology Council from 2014-2023, the largest global energy technology and services association. She is a frequent speaker on issues facing the energy industry including the global energy market, regulatory environment and ESG best practices. Ms. Beyer has been an advocate for the energy services sector testifying before Congress and frequently appearing on national media outlets. She also serves on the Advisory Board of the Energy Advisory firm Veriten. Before joining EWTC, her career highlights include 15 years in Washington, D.C. serving in policy and public affairs roles in the U.S. Senate, multiple presidential campaigns, The White House – Executive Office of the President, U.S. State Department and U.S. Department of Housing and Urban Development. After government service, Ms. Beyer began a career in advocacy as Director, Member and Board Relations with the National Association of Manufacturers. Ms. Beyer holds a bachelor’s degree of arts in Latin American Studies from The University of Texas at Austin.

Ms. Cepak has served as a director of Patterson-UTI since August 2014. Ms. Cepak has served as a director of Ranger Oil Corporation, an upstream oil and gas company, since September 2019, as a director of California Resources Corporation, an upstream oil and gas company, since October 2020 (and as chair since April 2021) and as a director of EnLink Midstream, LLC, a midstream company, since December 2021. Ms. Cepak served as the Chief Financial Officer of Energy XXI Gulf Coast, Inc., an upstream oil and gas company, from August 2017 to October 2018. Ms. Cepak served as the Chief Financial Officer of KLR Energy (and, subsequent to its business combination, Rosehill Resources Inc., an upstream oil and gas company) from January 2015 to June 2017. Ms. Cepak served as a director of Yates Petroleum Corporation, a privately owned, independent oil and gas exploration and production company, from October 2015 to October 2016. Ms. Cepak served four years as the Chief Financial Officer of EPL Oil & Gas, Inc., and was further appointed Executive Vice President in January 2014, and she served in those roles until June 2014, when EPL was sold. Ms. Cepak began her career with EPL as a Senior Asset Management Engineer, a position she held until she was appointed Director of Corporate Reserves in September 2001. Ms. Cepak was named EPL’s Director of Investor Relations in April 2006 and Vice President, Treasurer and Investor Relations in July 2008. In July 2009, Ms. Cepak was designated as EPL’s Principal Financial Officer and, in September 2009, she was appointed Senior Vice President. Ms. Cepak has more than 25 years of energy industry experience and prior to joining EPL, she was a Senior Reservoir Engineer with Exxon Production Company and ExxonMobil Company with operational roles including reservoir engineering and subsurface completion engineering for numerous offshore Gulf of Mexico properties. Ms. Cepak holds a B.S. in Engineering from the University of Illinois and a Masters of Business Administration in Management with a concentration in Finance from Tulane University.

Mr. Drummond has served as a director of Patterson-UTI since September 2023. Mr. Drummond served as a member of NexTier’s board of directors from August 2018 to September 2023. He joined NexTier in August 2018 as Chief Executive Officer and was elected as President in October 2019. Prior to joining NexTier, Mr. Drummond served as the President & Chief Executive Officer of Key Energy Services, Inc. and served for more than 30 years at Schlumberger Limited in various executive positions. Mr. Drummond has been a Supervisory Director at Expro Group Holdings N.V. since May 2017. He has previously served on the board of directors of the National Ocean Industries Association, the Houston Offshore Energy Center, the Greater Houston Partnership, the API Upstream Committee, and as an Advisory Board Member of the University of Houston Global Energy Management Institute. Mr. Drummond attained his B.S. in Mineral/Petroleum Engineering from the University of Alabama.

Mr. Halverson has served as a director of Patterson-UTI since September 2023. Mr. Halverson served as a member of NexTier’s board of directors from September 2016 to September 2023. In 2016, Mr. Halverson became a Senior Advisor at First Reserve, a private equity firm that focuses on energy investments, and a Partner at 360 Development Partners, a commercial real estate firm. Mr. Halverson was formerly Group President of Drilling and Production Systems and Senior Vice President at Cameron International Corporation from 2014 to 2016 prior to its sale to Schlumberger in 2016. He has over 38 years of industry experience with Cameron, where he worked in various leadership roles across the U.S., Latin America and Asia. Mr. Halverson currently serves as Chairman of the Board of Directors of the Petroleum Equipment Suppliers Association, as a director on the board of the General Committee of Special Programs of the American Petroleum Institute, as a director on the board of the Well Control Institute, as a director on the board of FlexSteel Pipeline Technologies, Inc. and was the U.S. delegate to the World Petroleum Congress.

Mr. Jaime has served as a director of Patterson-UTI since April 2022. Mr. Jaime previously served on the board of Summum Group Ltd, a provider of well servicing and oil and gas engineering and construction in Colombia, Mexico and Peru, from 2014 to 2022. Mr. Jaime previously served on the board of LAREIF, a renewable energy developer in Colombia, from 2014 to 2019. Mr. Jaime served in various management positions at Schlumberger between 1981 and 2010, including serving as President of Schlumberger’s Latin America business from 2008 to 2010. Mr. Jaime has served on the board of Alliance Schlumberger, a non-profit organization grouping former Schlumberger engineers, since 2019. Mr. Jaime holds a Bachelor of Science degree in electrical engineering from Pontificia Universidad Javeriana in Bogotá, Colombia.

Ms. Judah has served as a director of Patterson-UTI since April 2018. Ms. Judah has served as a director of the general partner of Crestwood Equity Partners LP, a midstream company, since November 2018. Ms. Judah has also served as a director for privately held Aethon Energy III, LLC, an upstream oil and gas investment firm, since June 2019, and as a member of the University Lands Advisory Board since August 2020. Ms. Judah served as a director of Jagged Peak Energy Inc., an upstream oil and gas company, from April 2019 to January 2020, when Jagged Peak was acquired by Parsley Energy. Ms. Judah served as the President of the Society of Petroleum Engineers from September 2016 to October 2017 while on secondment from Chevron, and as a member of the Board of Directors of the Society of Petroleum Engineers from 2003 to 2006 and from 2012 to 2018. Ms. Judah held numerous leadership positions at Chevron, including general manager for Chevron’s Southern Africa business unit from August 2010 to September 2016, president of Chevron Environmental Management Company from August 2007 to August 2010 and general manager of reservoir and production engineering for Chevron Energy Technology Company from June 2004 to August 2007. Before joining Chevron in 1998, she held various upstream petroleum engineering positions for Texaco and Arco, starting in Midland in 1981. Ms. Judah holds Bachelor of Science and Masters of Science degrees in petroleum engineering from Texas A&M University, a Masters of Business Administration from the University of Texas of the Permian Basin and a Juris Doctorate from the University of Houston Law Center. Ms. Judah is a registered professional Engineer in Texas, currently serves on both the Texas A&M and University of Houston College of Engineering Advisory Councils, and has been a member of the Texas A&M Petroleum Engineering Industry Board since 1996. Ms. Judah is also president-elect of Houston Audubon, a conservation land trust and environmental education nonprofit organization.

Ms. Nelson has served as a director of Patterson-UTI since September 2023. Ms. Nelson served as a member of NexTier’s board of directors from October 2019 to September 2023. She is also the president of Greenridge Advisors, LLC, which she founded in 2007 as an energy services and equipment consulting firm focused on the development, execution, and financing of corporate and product line strategies. Ms. Nelson advises her clients on strategy development, capital allocation, acquisition evaluation and infrastructure development. Her clients span a broad range of oilfield service, product and geographic markets. Ms. Nelson has been a member of APA Corporation’s board of directors since 2014, and she is a member of both its audit committee and corporate responsibility, governance, and nominating committee. She also joined the Helix Energy Solutions Group, Inc. board of directors and its audit committee in July of 2019, and in May of 2020 began serving as the chair of the audit committee. Ms. Nelson also serves on the board of directors of certain private companies, including Enercorp Sand Solutions, Merichem Company and Sunland Construction. Ms. Nelson began her career at Amoco Production Company in a variety of engineering, project management and planning roles. From 2000 to 2007, Ms. Nelson served as a vice president of SCF Partners, an oilfield service and equipment-focused private equity firm, where she concentrated on investment strategy, investment execution and portfolio company management. Ms. Nelson has devoted her career to serving companies in the oil and gas industry.

Ms. Robertson has served as a director of Patterson-UTI since April 2022. Ms. Robertson has served as a director of EOG Resources, Inc., an upstream oil and gas company, since January 2019, as a director of Superior Energy Services, Inc., an oilfield services company, since February 2021 and as a director of Seadrill Limited, an offshore drilling contractor, since November 2021. Ms. Robertson served in the role of Executive Chairman of Noble Corporation plc (“Noble”), an offshore drilling contractor, from May 2020 until her retirement from Noble in February 2021. Previously, Ms. Robertson served as Chairman of the Board, President and Chief Executive Officer of Noble from January 2018 until May 2020. Ms. Robertson previously served in various other management roles for Noble and its subsidiaries, including (i) Executive Vice President from 2006 to January 2018, (ii) Senior Vice President — Administration from 2001 to 2006 and (iii) Vice President — Administration from 1996 to 2001. Ms. Robertson also served continuously as Corporate Secretary of Noble from 1993 until assuming the Chairman’s role in 2018. Ms. Robertson joined a predecessor subsidiary of Noble in 1979. Ms. Robertson holds a Bachelor of Journalism degree from the University of Texas at Austin.

Mr. Stewart has served as a director of Patterson-UTI since September 2023. Mr. Stewart served as a member of NexTier’s board of directors from March 2011 to September 2023. He joined NexTier in March 2011 as Chairman and Chief Executive Officer and served as Executive Chairman from August 2018 to October 2019. Prior to joining NexTier, from 2007 to 2009, he served as the President and Chief Executive Officer of a privately held international drilling company. From 2006 to 2007, Mr. Stewart served as Vice President of Integrated Drilling Services for Weatherford International plc, based in London and Dubai, where he created and managed a global business unit that included a 50-rig international land contract drilling group and a global project management team. Mr. Stewart began his career with Schlumberger Limited, where he held senior leadership positions across the globe over the span of 22 years.

Mr. Hendricks has served as President and Chief Executive Officer of Patterson-UTI since October 2012 and as a director of Patterson-UTI since June 2017. From April 2012 through September 2012, he served as Chief Operating Officer of Patterson-UTI. Prior to Patterson-UTI, Mr. Hendricks worked in a number of positions at Schlumberger for 24 years, where he last served as a drilling division President, having lived and worked around the world in the energy industry, offshore and onshore, and conducting business at times in Spanish and French. As CEO at Patterson-UTI, he has focused on transformation through investments in people and technology, growth through strategic acquisitions, improving diversity in recruiting and leadership and also enhancing the company’s sustainability and ESG position. Mr. Hendricks attended Texas A&M University, receiving a Bachelor of Science degree in Petroleum Engineering, and then began his career working on an offshore drilling rig in the Gulf of Mexico for Ocean Drilling & Exploration Company (currently Diamond Offshore). Mr. Hendricks is currently Vice Chair and a past Chairman of the International Association of Drilling Contractors, a member of the Society of Petroleum Engineers, an energy contributor on CNBC and has testified on energy matters with the U.S. Senate Committee on Energy and Natural Resources in Washington D.C.