Mr. Stoneburner serves as a Director of Sitio and is a member of the Nominating and Corporate Governance Committee. Mr. Stoneburner previously served as a Director of Brigham Minerals from May 2018 to December 2022. Mr. Stoneburner joined the investment firm Pine Brook in April 2013 and is a senior advisor on the energy investment team. Mr. Stoneburner represents Pine Brook as a director of Accelerate Resources Holdings, LLC, Pursuit Oil & Gas, LLC, Elevation Resources LLC and Sagauro Resources, LLC, each an oil and gas company. Mr. Stoneburner has over 41 years of experience in the oil and gas industry. He served as President of the North America Shale Production Division for BHP Billiton Petroleum, an exploration and development company, from 2011 to 2012. From 2009 to 2011, Mr. Stoneburner served as President and Chief Operating Officer of Petrohawk Energy Corporation, an oil and gas exploration and development company. He was also its Chief Operating Officer from 2007 to 2009 and led their exploration activities as Vice President and then Executive Vice President of Exploration from 2003 to 2007. Mr. Stoneburner began his career as a geologist in 1977 and held positions at Texas Oil and Gas Corp., Weber Energy Corp., Hugoton Energy Corp. and 3TEC Energy Corp, each an energy company. Mr. Stoneburner is on the board of directors of Tamboran Resources Limited, an oil and gas company, and is an advisor to Ayata, a software development company. He also serves on the advisory council of The Jackson School of Geosciences at the University of Texas at Austin and on the visiting committee of the Bureau of Economic Geology at the University of Texas at Austin and is a board member of Switch Energy Alliance. Mr. Stoneburner holds a Bachelor of Science in Geological Sciences from the University of Texas at Austin and a Master of Science in Geological Sciences from Wichita State University.