Brett S. Staffieri

aPriori Capital Partners LP (aPriori Capital Partners) is a private equity firm founded in 1985 by Susan C. Schnabel and Colin Taylor. The firm is headquartered in Los Angeles, California.

Credit Suisse Securities (USA) LLC (Credit Suisse Securities USA) is the broker/dealer division of Credit Suisse Securities (USA) LLC, an investment banking company headquartered in New York City. The firm was founded in 1998 and is a wholly owned subsidiary of Credit Suisse (USA), Inc., ultimately owned by Credit Suisse Group AG (SWX: CSGN) in Switzerland. Credit Suisse Securities USA offers a suite of equities, solutions and credit products and services which includes global securities sales, trading and execution, prime brokerage and comprehensive investment research. Their clients include financial institutions, corporations, governments, institutional investors, such as pension funds and hedge funds, and private individuals around the world.

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.

Permian Tank & Manufacturing, Inc. manufactures and supplies steel products. Its products include steel and fiberglass oil storage tanks, gun barrels, volumetric meter chambers, separators, and free water knockouts. The company was founded in 1976 and is headquartered in Odessa, TX.

Riverstone Investment Group LLC (Riverstone Investment Group) is a private equity firm, subsidiary of Riverstone Holdings LLC, founded in 2000 by Pierre F. Lapeyre, Jr. and David M. Leuschen. The firm is headquartered in New York.

Liberty Oilfield Services Holdings LLC operates as a holding company. The company is headquartered in Denver. CO.

Riverstone Holdings LLC operates as an energy focused investment manager. It conducts buyout and growth capital investments in the exploration and production, midstream, oilfield services, power, and renewable sectors of the energy industry. The company was founded by David Matthew Leuschen and Pierre Fernard Lapeyre, Jr. in 2000 and is headquartered in New York, NY.

Liberty Oilfield Services LLC engages in the provision of oilfield services. Its services include stimulation and engineering services and equipment rentals. The company was founded in March 2011 and is headquartered in Denver, CO.