John T. Sanchez

Silver Creek Permian Operating Co. LLC is engaged in oil and gas exploration services. The company is headquartered in Irving, TX.

Tom Brown, Inc. engages in the exploration for and the acquisition, development and production of, natural gas, natural gas liquids and crude oil. It also engages in the marketing, gathering, processing and sale of natural gas and the drilling of gas and oil wells. The company is headquartered in Denver, CO

Silver Creek Oil & Gas LLC is an oil and natural gas company, which engages in the acquisition, development and exploration of unconventional natural gas and oil resources in the United States. Its portfolio consists of two assets: the Arkoma Basin in Oklahoma and Sherman Basin in North Texas. The company was founded by John T. Sanchez and John D. Schmitz in October 2010 and is headquartered in Irving, TX.

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.

Ovintiv USA, Inc. provides oil and gas exploration and production services. The company was founded in 2000 and is headquartered in Denver, CO.

Alta Natural Resources LLC engaged in the acquisition, development and exploration of unconventional natural gas and oil resources. The company was headquartered in Irving, TX.