Lance W. Robertson has served as a director of Diamondback since September 2024. He was CEO of Endeavor Energy Resources until its merger with Diamondback closed in September 2024, having joined Endeavor as COO in 2017, and previously held senior roles at Marathon Oil and Pioneer Natural Resources. He holds a Bachelor of Science in Petroleum Engineering from Texas A&M University and an M.B.A. from Southern Methodist University.