Larry A. Parnell

HighPoint Operating Corp. engages in the development, acquisition, and exploration of oil and natural gas resources. It holds interest in the Denver-Julesburg Basin and the Uinta Oil Program in the Uinta Basin. The company was founded by William J. Barrett, Fredrick J. Barrett, and John Frank Keller in January 2002 and is headquartered in Denver, CO.

Pioneer Natural Resources Co. operates as an independent oil and gas exploration and production company. The firm engages in hydrocarbon exploration in the Cline Shale. It focuses on the operation of the Permian Basin, Eagle Ford Shale, Rockies, and West Panhandle projects. The company was founded by Scott Douglas Sheffield on April 2, 1997, and is headquartered in Irving, TX.

Parsley Energy, Inc. is an oil and natural gas company, which engages in the acquisition, development and exploitation of unconventional oil and natural gas reserves. Its portfolio includes Midland and Southern Delaware basin. The company was founded by Bryan Sheffield, Mike Hinson, and Paul Treadwell in 2008 and is headquartered in Austin, TX.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.