Jonathan J. Ginns

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.

Optimal Group, Inc. manufactured consumer robotic, toy and entertainment products and provided credit card processing services. The company was founded in 1996 and was headquartered in Montreal, Canada.

Chroma Oil & Gas, LP operated as a private oil and gas company. It offered acquisition, exploitation and development of properties primarily in East and South Texas and South Louisiana. The company was headquartered in Houston, TX.

APR Energy Ltd. operates as a holding company. It engages in the sale of electricity through global deployment and installation of scalable turnkey power solutions. The firm applications include peak shaving, emergency power, distributed generation, grid stability, support, bridging power and industrial generation. The company was founded on October 30, 2009 and is headquartered in London, the United Kingdom.

Northern Tier Energy LP engages in refining, retail, and logistics operations. The company was founded by Mario E. Rodriguez and Hank Kuchta on October 21, 2011 and is headquartered in Tempe, AZ.

Part of Marathon Petroleum Corp., Northern Tier Energy GP LLC provides oil and gas refining, retail and transportation services. The company is based in Ridgefield, CT. David L. Lamp has been the CEO of the company since 2014.

ACON Investments LLC (ACON Investments) is a private equity firm founded in 1996 by Kenneth R. Brotman, Bernard W. Aronson and Jonathan J. Ginns. The firm is headquartered in Washington D.C., the United States with additional offices in Dallas, Los Angeles, New York, Bogota, Madrid, Mexico City and Sao Paulo.

World Marine LLC provides marine and fabrication services. It offers new construction, heavy fabrication, repairs, upgrades, and conversions of all types of vessels and offshore rigs. The company is headquartered in Mobile, AL.

Milagro Exploration LLC engages in the acquisition, development and production of oil and gas in mid continent, the Southeast, the Texas Gulf Coast, and South Texas. The company was founded in 2005 and is headquartered in Houston, TX.