Jon-Al Duplantier

Mr. Duplantier serves as a Director of Sitio and is a member of the Compensation Committee. Mr. Duplantier previously served as a Director of Brigham Minerals from February 2021 to December 2022. Mr. Duplantier is a director of AltaGas Ltd. (TSX:ALA), where he serves on the Governance Committee. He is also a director and member of the Audit Committee of Allegiance Bancshares, Inc. (NASDAQ: ABTX). Mr. Duplantier recently retired as Parker Drilling Company’s (“Parker”) President, Rental Tools & Well Services, and prior to that was Senior Vice President, Chief Administrative Officer & General Counsel. Parker filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code in December 2018. Prior to Parker, Mr. Duplantier worked at ConocoPhillips for 14 years with positions across the globe including Indonesia and the UAE. Mr. Duplantier earned his Juris Doctor Degree from Louisiana State University and a Bachelor of Science in Chemistry from Grambling State University.