David Chang

Part of Marathon Oil Corp., Pennaco Energy, Inc. acquires, develops, and produces oil and natural gas properties, primarily coal bed methane properties. The company is based in Denver, CO. Pennaco Energy was acquired by Marathon Oil Corp. on February 06, 2001 for $373.18 million. The company was founded in 1998 by Marc A. Bruner, Mark A. Erickson, Bradley J. Windt.

Petrohawk Energy Corp. operates as an oil and natural gas company which is engages in the acquisition, development, production, and exploration of oil and natural gas properties. The company was founded by Richard K. Stoneburner in 2003 and is headquartered in Houston, TX.

Luminus Management LLC is a SEC-registered investment advisor and hedge fund manager headquartered in Houston, Texas. The firm was founded in 2002 and is wholly-owned by Luminus Partners LP. Luminus Management manages assets on a discretionary basis on behalf of private pooled investment vehicles.

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.

Citigroup Global Markets, Inc. engages in the provision of brokerage, investment banking, and asset management services to individuals, businesses, and governments. The company was founded by Julie E. Silcock and is headquartered in New York, NY.

SIR Capital Management LP (SIR) is an independent, SEC-registered investment advisor and hedge fund manager headquartered in New York City. The firm was founded by Vincent Maddi and Shawn Brennan in 2007. SIR provides advice on a discretionary basis to various private investment funds. Their affiliate, SIR Advisors LLC, acts as the general partner for their US-based funds.

Ute Energy Corp. operates as a independent oil and natural gas company. It engages in the exploration, development, production and acquisition of oil and natural gas reserves with a primary focus on acquiring and developing oil reserves in the Uinta Basin in Utah. The company was founded on April 15, 2008 and is headquartered in Denver, CO.

University of Houston System offers higher education degrees and job training or vocational study programs. It offers about 280 undergraduate and graduate degree programs in fields such as business, education, humanities and law. It was founded in 1927 and is headquartered in Houston, TX.

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.

The University of Texas M.D. Anderson Cancer Center provides cancer patient care, research, and prevention for cancer. The firm also provides education for undergraduate and graduate students, trainees, professionals, employees and the publics. The company was founded in 1941 and is headquartered in Houston, TX.

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 Independent Petroleum Association of America manufactures oil and natural gas. The non-profit company is based in Washington. Barry Russell has been the CEO of the American company since 1980.

Entegra Power Group LLC operates as an independent power company. It provides natural gas fired combined cycle facilities. The company was founded in June 2005 and is headquartered in Tampa, FL.

Memorial Hermann Health System operates as a non-profit organization that provides healthcare services. It specializes in back pain and spine care, cancer, children's health, digestive health, emergency services, heart and vascular care, neurosurgery, neurology, stroke, orthopedics, sports medicine, rehabilitation and physical therapy, sleep medicine, transplant center, weight loss, and women?s health and maternity. Its services include alcohol and drug rehabilitation, diabetes education, home care, hospice, and medical equipment. The organization was founded 1907 and is headquartered in Houston, TX.

Blackbrush Oil & Gas LP explores, develops and produces oil and gas. It provides investment opportunities in the oil and gas industry. The company was founded by Philip M. Mezey and is headquartered in San Antonio, TX.

Kinkaid School, Inc. operates schools. It provides educational services along with social development, athletic participation, and arts and ethical behavior. The company was founded by Margaret Hunter Kinkaid in 1906 and is headquartered in Houston, TX.

Bayou City Pump, a service and manufacturing company founded in 1973, has been serving the Houston and Gulf Coast region's industrial community for over 35 years. Dedicated to providing the highest level of customer service, Bayou City Pump excels at handling emergencies and provides on-site or in-house service 24 hours a day, 7 days a week. They are proud of the longevity of their employees and customers and work to build long term relationships that are mutually beneficial to both. Specializing in marine pump repair, Bayou City Pump has the expertise to repair any industrial pumping system. Their in-house, full service, heavy industrial machine shop facilitates quick turnaround times on all repairs. We provide value to their customers by quickly repairing and returning to service critical pumping systems, anyplace, anytime. Be honest, fair, and upfront and do what clients say client will do. I simply believe in doing everything in client's power for their people." Winford Daniel "WD" Emmons, Founder of Bayou City Pump WD Emmons, former mechanic for the U.S. Air Force and employee of major companies like, Shell, Allied Chemical and Maxwell House Coffee, founded their company in 1973. WD bought an old Texaco station and a lot for $12,000 and simply "started doing repairs." From such humble beginnings, he grew Bayou City Pump into a highly experienced, service oriented company. Today, Bayou City Pump shares WD's philosophy of providing customers with extraordinary service. For over 35 years, their business has grown by earning the trust of their customers and exceeding their expectations through many full-service capabilities.

Part of Shell Plc, Shell E & P Offshore Services BV is a Dutch company that provides offshore oil and gas services. The company is based in The Hague, Netherlands.

Part of BakerRipley, Daniel & Edith Ripley Foundation, Inc. provides information aimed at volunteers, clients, donors, partners, and news media. The company is based in Houston, TX. Daniel & Edith Ripley Foundation was acquired by Neighborhood Centers, Inc. on February 16, 2017.

Ursa Resources Group II LLC engages in the exploration and production of oil and natural gas properties. It develops oil rich unconventional plays as well as the acquisition of conventional oil and gas producing properties. The company was founded by Stephen E. Skinner in 2011 and is headquartered in Denver, CO.

Jagged Peak Energy LLC engages in the acquisition, development, and exploration of oil and gas assets. The firm's investment and business activities focus on resource plays in North American basins. It engages in operations that address liquids resource opportunities onshore. The company was founded in April 2013 and is headquartered in Denver, CO.

Ajax Resources LLC provides oil and gas drilling services. The company was founded in June 2015 and is headquartered in Huston, TX.

Terra Energy Partners LLC engages in the exploration and production of oil and natural gas. It acquires and develops long-lived producing oil and gas assets in North America. The company was founded by Michael S. Land in 2015 and is headquartered in Houston, TX.

Bruin E&P Partners LLC explores oil and gas properties. It focuses on the development of oil rich unconventional plays as well as the acquisition of conventional oil and gas producing properties. The company is headquartered in Houston, TX.

Verdad Resources Holdings LLC functions as an investment holding private company. The company is based in Dallas, TX.

Development Capital Resources LLC engages in the provision of oil and gas exploration services. The company was founded in 2017 and is headquartered in Houston, TX.

Cima Inspection LLC provides industrial inspection services. The private company is based in Pasadena, TX. The CEO of the company is William Jefferson Campbell.

Halcon Resources Corp. engages in the acquisition, production, exploration, and development of onshore oil and natural gas properties. The private company is based in Houston, TX. The company was founded by Jason E. Brown.

Bowline Energy LLC provides oil and gas exploration and production services. The private company is based in Denver, CO and has subsidiaries in the United States.