William J. Krysiak

Whiting Canadian Holding Co. ULC engaged in the exploration, exploitation, acquisition and production of crude oil and natural gas. The company was founded by Lynn A. Peterson and James Ernest Catlin on March 17, 1972 and was headquartered in Denver, CO.

Southwest Generation Operating Co. LLC provides power generation services. It provides operations, maintenance, asset management, project development and technical services. The company was founded in 2008 and is headquartered in Denver, CO.

Western Gas Resources, Inc. used to explore natural gas and natural gas liquids. It engaged in the exploration, development, production, gathering, processing, treatment, transportation and marketing of natural gas and natural gas liquids. It operated through four segments: Gas Gathering, Processing and Treating, Exploration and Production, Marketing and Transportation. Western Gas Resources, Inc. was founded in 1989 and was headquartered in Denver, CO.

Aspect Holdings LLC provides investments in oil and gas exploration companies. It engages in exploration and production activities in a number of countries, including the United States, Hungary, and the Kurdistan Region of Iraq. The company was founded by Alex Cranberg in 1993 and is headquartered Denver, CO.

Anadarko Petroleum Corp. is an independent exploration and production company. It operates through the following segments: Exploration and Production; WES Midstream; and Other Midstream. The Exploration and Production segment focuses on the exploration, development, production, and sale of oil and natural gas. The WES Midstream and Other Midstream segment consists of gathering, compressing, treating, processing, and transporting of natural gas; gathering, stabilizing, and transporting of oil and natural gas liquids. The company was founded in 1959 and is headquartered in The Woodlands, TX.