William Lane Britain

PetroCap LLC (PetroCap) is a private equity firm founded in 1992 by Doug Evans. The firm is headquartered in Dallas, Texas.

Safety-Kleen, Inc. provides environmental services to commercial, industrial and automotive customers. It offers oil solutions, part cleaning technologies, waste management, vacuum services, compliance services, emergency response, total project management and automotive fluids. The firm also offers safety-Kleen professional products and absorbent and wipers. The company was founded in 1963 and is headquartered in Richardson, TX.

Blackwell BMC LP performs geophysical, geological, and other exploration services for the oil and gas industry. The private company is based in Dallas, TX.

Carey International, Inc. engages in the provision of chauffeured vehicle services. Its services include airport limousine services, hourly charters, special occasions, road show and tours and sightseeing. The company was founded by J. P. Carey in 1921 and is headquartered in Frederick, MD.

Dallas Zoological Society engages in saving wildlife. The company was founded in 1888 and is headquartered in Dallas, TX.

Highland Capital Management LP (Highland) is a SEC-registered investment advisor headquartered in Dallas, Texas. The firm was founded by James (Jim) Dondero and Mark Okada in 1993. They are owned by the Highland Claimant Trust. Highland acts as an investment adviser or sub-adviser to structured product vehicles (which include but not limited to CLOs and Collateralized Debt Obligations unregistered investment funds, and single Client accounts).

The Carlyle Group LP (Global Private Equity) is a private equity firm founded in the year 1990 by William E. Conway, Jr. and Daniel A. D'Aniello. The firm is headquartered in Washington DC.

Founded in 2004, Ewing Management Group is a private equity firm located in Dallas, Texas with an additional office in New York City.