David J. Kornder

Colorado Oil & Gas Association engages in the exploration and production of oil and gas. The private company is based in Denver, CO. The company was founded by Anthony W. Sharp. Dan Haley has been the CEO of the company since 2015.

Cornerstone Natural Resources LLC operates as an independent oil and gas company, which focuses on building a long-life reserve asset base in the Williston Basin. It offers onshore and offshore operations, natural gas compression, shot hole drilling, directional drilling, engineering and allied services. The company was founded in 2005 and is headquartered in Aurora, CO.

Patina Oil & Gas Corp. engages in the acquisition, development, exploitation and production of oil and natural gas properties within the continental United States. The company was incorporated in June 20, 2001 and is headquartered in Denver, CO.

Founded in 1989, Petrie Parkman & Co., Inc. is an investment bank headquartered in Denver, Colorado with additional offices in Houston and London. The offer investment banking services, equity research, sales and trading and underwriting in the capital markets area. Their research analysts focus on the energy sector. Their research coverage extends from small oil companies to large integrated major oils, pipeline, midstream and downstream companies. Petrie Parkman is a member of the NASD and the SIPC. They are a subsidiary of Merrill Lynch & Co., Inc. (NYSE: MER).

Gerrity Oil & Gas Corp. explores for oil and gas properties. The company is headquartered in Denver, CO.