Mr. McCollum has extensive global experience in the offshore energy services sector and has chaired three different public-company audit committees. He is a 23-year veteran of the oil and gas industry, having most recently served as President and Chief Executive Officer of Weatherford International plc from 2017 to 2020. He also held several leadership roles at Halliburton Company from 2003 to 2017, including Executive Vice President and Chief Financial Officer. He currently serves on the board of directors of Westlake Corporation (since 2018) where he is chair of the audit committee and serves as a director, member of the audit committee and member of the corporate governance committee of ONEOK, Inc. (since 2026). He served as a director, chair of the compensation committee and member of the health, environmental, safety and corporate responsibility committee of Marathon Oil Corporation from 2022 until its acquisition by ConocoPhillips in 2024. Mr. McCollum is also a member of the board of directors of privately-held MOM Holding Company, the board of trustees of Baylor College of Medicine, the board of directors of Baylor St. Luke s Medical Center and the board of directors of Mentoring Alliance. Mr. McCollum holds a Bachelor of Business Administration in Accounting from Baylor University and is a CPA in Texas. He is a resident of Waco, Texas.