John Tonello

Extraction Oil & Gas, Inc. is an energy company, which engages in the exploration, development, and production of oil, natural gas, and natural gas liquids. It focuses on extraction activities in Denver-Julesburg Basin of Colorado, targeting development of the Codell and Niobrara formations. The company was founded by Mark A. Erickson, Matthew Owens and Jesse Silva in November 2012 and is headquartered in 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.

Bison IV Operating LLC, also known as Mallard Exploration, is an upstream Oil & Gas Exploration and Production company. The company is based in Denver, CO. Mallard Exploration was founded by John Tonello and Matt Volkmar, with John Tonello serving as the CEO since incorporation. The company is focused on building a successful business with strong ethics, hard work, and industry-leading technology.