R. Cris Sherman

Mariner Energy, Inc. explored and produces oil and natural gas. It operated in four principal areas: Permian Basin, Gulf Coast, Gulf of Mexico Deepwater and Gulf of Mexico Shelf. The company was founded in August 1983 and is headquartered in Houston, TX.

Sirius Solutions LLLP provides business consulting services. The company specializes in compliance, financial reporting, technology solutions, energy consulting areas. The firm serves the agriculture, banking, biotechnology, capital markets, chemicals, commodity trading, construction, consumer services, and entertainment industries. The company was founded in 2002 and is headquartered in Houston, TX.

Reliant Energy, Inc. generates and markets electricity. It has more than 14,000 megawatts of power generation capacity at 36 coal, oil and gas-fired plants across the United States. Reliant Energy is headquartered in Houston, TX.

Part of Enron Dissolution Corp., Enron North America Corp gathers, transports, and markets natural gas. The company is based in Houston, TX.

Dynegy, Inc. is a holding company, engages in the production and sale of electric energy, capacity, and ancillary services. It operates through the following segments: PJM, NY/NE, ERCOT, MISO, and CAISO. The PJM segment comprises of power generation facilities located in Ohio, Pennsylvania, Illinois, Virginia, West Virginia, and New Jersey. It offers wholesale electricity and provides transmission planning. The NY/NE segment consists of power generation facilities located in Massachusetts, Connecticut, Maine, and New York. It dispatches power plants to meet system energy and reliability needs and settles physical power deliveries. The ERCOT segment serves the state of Texas over a high-voltage transmission system. The MISO segment includes three power generation facilities in Illinois. The CAISO segment contains two power generation facilities located in California. The company was founded in 1984 and is headquartered in Houston, TX.

Eastex Energy, Inc. operates natural gas transmission systems. The company is headquartered in Houston, TX.

Kerogen Exploration LLC identifies and develops shale oil opportunities. The company was founded by Murray W. Grigg in December 2010 and is headquartered in Houston, TX.

Kerogen Energy Holdings LLC identifies and develops shale oil opportunities. It focuses on onshore unconventional oil and liquids exploration and production in the United States and Canada. The firm offers services through its operating companies Kerogen Exploration, Inc. and BlackShale Resources, Inc. The company was founded in December 2010 and is headquartered in Houston, TX.