Mr. Clark serves as a Director of Sitio and as Chair of the Audit Committee. From January 2014 to July 2019, Mr. Clark served as Vice President and Treasurer of Marathon Oil Corporation (“Marathon Oil”). From 2007 until January 2014, Mr. Clark served as Assistant Treasurer of Marathon Oil. Mr. Clark was responsible for managing all treasury related matters, including corporate finance, cash and banking/operations, insurance, pensions, enterprise risk management and credit and counterparty risk. During his tenure, Mr. Clark led financing transactions, including bond and equity issuances, revolving credit and receivables facilities, merger and acquisition financings and major corporate restructurings (public spin-offs). Prior to joining Marathon Oil, Mr. Clark served as Senior Tax Counsel at Enron North America Corporation, a Tax Attorney at Bracewell LLP in Houston and a Senior Accountant with Touche Ross & Company (Deloitte & Touche) in Los Angeles. Mr. Clark currently serves as a Director and Chair of the Audit Committee of the Board of Directors of Civitas Resources, Inc. (NYSE: CIVI), a position he has held since January 2021. Additionally, Mr. Clark has been involved with several non-profit and educational boards and continues to evaluate additional potential opportunities. Mr. Clark holds a Bachelor of Science degree in Accounting from Southern University, a Juris Doctor from Tulane Law School, and a Master of Laws degree (LL.M.) from New York University School of Law.