Corporate Governance

Mr. Drummond serves as a director and as NexTier’s President and Chief Executive Officer. He joined NexTier in August 2018 as Chief Executive Officer and a member of the Board, and he 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.

Leslie Beyer has served as a member of NexTier’s board of directors since February 2023.  Ms. Beyer is the Chief Executive Officer of the Energy Workforce & Technology Council, the largest global energy technology and services association. Serving in this role since 2014, 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. Additionally, Ms. Beyer has been a member of Natural Gas Services Group, Inc. since 2020, serving as chair of the compensation committee and as a member of both its audit and ESG committees. 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.

Mr. Brightman has served as a member of our Board since October 2019. In January 2023, he accepted appointments to serve on the board of directors of Hunting PLC and each of its committees. Mr. Brightman served as a director of TETRA Technologies, Inc. (“TETRA”), a diversified oilfield services company, from May 2009 to May 2020. He also served as Chief Executive Officer of TETRA from May 2009 until May 2019, as President of TETRA from May 2009 until February 2018, and as Executive Vice President and Chief Operating Officer of TETRA from April 2005 to May 2009. Prior to TETRA, Mr. Brightman spent 11 years at Dresser, Inc. (including its successors in interest, “Dresser”), in a variety of leadership roles, during which he was involved in multiple M&A transactions, internal restructurings and product/market repositionings. He has experience in integration of acquisitions and oversight of operations, engineering, sales and marketing, finance, human resources and information technology.

Mr. Halverson has served as a member of our Board since September 2016. 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. Murray has served as a member of our Board since October 2019. In May 2004, Mr. Murray retired from Dresser, Inc., a manufacturer and marketer of highly engineered equipment for the energy industry, where he had been the Chairman of the Board and Chief Executive Officer since 2001. From 1996 to 2000 he served in a variety of senior leadership roles with Dresser. Mr. Murray has over 35 years of domestic and international experience in both operational management and financial/business development leadership roles. Mr. Murray also serves on the board of the World Affairs Council of Dallas Fort Worth, on the board of advisors for the Maguire Energy Institute at the Edwin L. Cox School of Business, Southern Methodist University, and as Chairman of the Board of Regents of Seton Hall University.

Ms. Nelson has served as a member of our Board since October 2019. 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 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.

Mr. Riggs has served as a member of our Board since October 2019. Mr. Riggs has served in senior-level positions at Clayton Williams Energy, Inc. (“CWEI”) and its related companies for 28 years, including his current position as Vice President and Director since May 2017. Clayton Williams Companies is a group of privately held companies involved in oil and natural gas activities, real estate, and agricultural operations. From March 2015 to April 2017, Mr. Riggs served as President of CWEI, a public exploration and production company that develops and produces oil and natural gas. From December 2010 until March 2015, Mr. Riggs served as Executive Vice President and Chief Operating Officer of CWEI. From 1991 to December 2010, Mr. Riggs served as Senior Vice President—Finance, Secretary, Treasurer, and Chief Financial Officer of CWEI. Mr. Riggs currently serves as a director at Black Mountain Acquisition Corp., a position he has held since October 2021. He previously served as a director at Royal Energy, Inc. from July 2018 to November 2021, as a director at TransAtlantic Petroleum Ltd. from July 2009 to June 2020, and as a director at CWEI from May 1994 until April 2017. Mr. Riggs is a Certified Public Accountant.

Mr. Rodriguez has served as a member of our Board since January 2022. He is the Chief Digital and Technology Officer at J.D. Power. Mr. Rodriguez is responsible for advancing J.D. Power’s digital and AI transformation and leads the company’s Technology, Artificial Intelligence, Research, Innovation, CX Solutions divisions. From 2016 until Mr. Rodriguez joined J.D. Power in 2017, he served as Managing Director of Strategy at Huge Inc., a global full-service digital agency that partners with Fortune 100 companies on the design and execution of product and brand strategies, enterprise transformation and innovation. Prior to joining Huge Inc., Mr. Rodriguez served as a Managing Director at Accenture, the global management consulting and professional services company, where he led the firm’s North American Digital Strategy Practice for telecommunications, media and technology. From 2010 to early 2015, Mr. Rodriguez served as Chief Digital Officer at Kaplan Test Prep, a top provider of educational and career services, where he was responsible for digital transformation in technology, data science, user experience, online learning, Kaplan publishing and innovation. Mr. Rodriguez holds a B.S. in electrical engineering from Universidad Rafael Urdaneta in Venezuela and a master’s degree and Ph.D. in computer engineering from the University of Colorado.

Mr. Roemer has served as a member of our Board since October 2019. Mr. Roemer also operates his business, Roemer Financial Consulting, a financial advisory services company that he founded in 2012. He advises closely held businesses with financial advice, focusing on potential merger and acquisitions and exit transactions. Prior to his current role, Mr. Roemer served as a Partner and Chief Financial Officer of Hammond, Kennedy, Whitney & Company (“HKW”), a private equity firm. In this role, his responsibilities included, among other things, financial and tax reporting, coordinating financial due diligence of acquisition targets, and working with the HKW team to assess a target’s financial results and the financial management team’s capabilities. He is a licensed CPA with over 35 years’ experience.

Mr. Stewart joined NexTier in March 2011 as Chairman and Chief Executive Officer and became Executive Chairman in August 2018 until October 31, 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. Wille has served as a member of our Board since March 2011. He is currently a Senior Managing Director and Head of Consumer and Retail Private Equity at Cerberus, which he joined in 2006. Prior to joining Cerberus, Mr. Wille worked in the leveraged finance group at Deutsche Bank Securities Inc. from 2004 to 2006. Mr. Wille currently serves as a director of the Albertsons Companies, Inc. the second largest traditional grocery company in the U.S. In addition, Mr. Wille currently serves as a director of Off Lease Only, the largest independent used car dealer in Florida. Mr. Wille previously served as a director of Remington Outdoor Company, Inc. from February 2014 to March 2018, a designer, manufacturer and marketer of firearms, ammunition and related products and as director of Tower International, Inc., a manufacturer of engineered structural metal components and assemblies, from September 2010 to October 2012.