C. Philip Tholen

Tipperary Corp. provides exploration services. It explores for coal and natural gas. The company has operations in Queensland, Australia, Colorado and Nebraska. The company was founded in 1967 and is headquartered in Denver, CO.

Part of Chevron Corp., Monterey Resources, Inc. is a company that produces and develops oil and natural gas. The company is based in Bakersfield, CA. Monterey Resources was acquired by Texaco, Inc. on November 05, 1997 for $1,103.08 million.

Part of Maverick Natural Resources LLC, BreitBurn GP LLC focuses on the acquisition, exploitation and development of oil and gas properties. The company is based in Los Angeles, CA. The company was founded by Randall Hart Breitenbach, Halbert S. Washburn. Halbert S. Washburn has been the CEO since incorporation.

Stifel, Nicolaus & Co., Inc. (Stifel) is a dual-registered broker-dealer and investment adviser headquartered in St. Louis, Missouri. Founded in 1890, the firm is a subsidiary of Stifel Financial Corp. (NYSE: SF), a financial service holding company. Stifel provides full-service brokerage and investment advisory services to individuals and their families, institutions and businesses, and financial advisors.

South Texas Oil Co. is an independent oil and natural gas company that is engaged in the acquisition, production, exploration and development of oil and natural gas properties. The company was founded on July 31, 2001 and is headquartered in San Antonio, TX.

Samson Resources Co. operates as an independent oil and natural gas company. It also engages in the exploration, development and production of oil and natural gas from properties located onshore in the United States. The company was founded on November 23, 1971 and is headquartered in Tulsa, OK.

University of Southern California is a private research university that mainly offers undergraduate, graduate & other higher education. The university was founded in 1880 and is headquartered in Los Angeles, CA.

American Petroleum Institute (API) is the only national trade association that represents all aspects of America's oil and natural gas industry. Its more than 400 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. They are producers, refiners, suppliers, pipeline operators and marine transporters, as well as service and supply companies that support all segments of the industry.

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.

The University of Oklahoma Foundation, Inc. operates as a non-profit organization. It offers financial services, as well as provides private donors means to invest in the future. The company was founded in 1944 and is headquartered in Norman, OK.

Western States Petroleum Association engages in petroleum exploration, production, refining, transportation, and marketing. The private company is based in Sacramento, CA.

Applied Natural Gas Fuels, Inc. produces, distributes and sells liquefied natural gas. It sells its products to transportation, industrial, and municipal markets in the western United States and northern Mexico. The firm offers turn-key fuel solutions to its customers that include delivery of clean LNG fuel, equipment storage, fuel dispensing equipment and fuel loading facilities. The company was founded in 1995 and is headquartered in Westlake Village, CA.

Helen Woodward Animal Center focuses on pet adoption and on-site humane education. It offers equine hospital, small animal hospital, boarding facility, animal-assisted therapy outreach, therapeutic horseback riding for the disabled and AniMeals food for pets of the homebound. The company was founded by Helen Whittier Woodward in 1972 and is headquartered in Rancho Santa Fe, CA.

Part of Vermilion Energy, Inc., Canadian Phoenix Acquisition Corp. operates as an investment holding company. The company is based in Calgary, Canada. Michael James Atkinson has been the CEO of the company since 2009. Canadian Phoenix Acquisition was acquired by Renegade Petroleum Ltd., a SUB of Vermilion Energy, Inc. from Knol Resources Corp. on December 17, 2012 for $76.89 million.

Woodbine Holdings LLC is a private company that engages in oil and gas extraction services. The company is based in Fort Worth, TX.