Stephen A. Thorington

Plains Exploration & Production Co. was an independent energy company, which was engaged in the activities of acquiring, developing, exploring and producing oil and gas properties. It was owned oil and gas properties in onshore and offshore areas of California, the Gulf Coast Region, including Haynesville Shale, Eagle Ford Shale and South and East Texas, the Mid-Continent Region and the Rocky Mountains. The company was founded on September 28, 1990 and was headquartered in Houston, TX.

Plains Resources, Inc. engages in acquisition and exploitation of mature, underdeveloped oil properties, preferably an entire field in which a major integrated or large independent producer has controlling interest, simplifying the acquisition process. The company is headquartered in Houston, TX.

CMC Materials KMG Corp. engages in the production and distribution of specialty chemicals. It operates through the following segments: Electronic Chemicals and Performance Materials. The Electronic Chemicals segment sells wet process chemicals primarily to the semiconductor industry. The Performance Materials segment includes the pipeline performance and wood treating chemicals business platforms. The company was founded in 1992 and is headquartered Fort Worth, TX.

The Chase Manhattan Bank NA operates a commercial banking. It provides financial products, services, and advice, planning and treasury management services. The company is located in New York, NY.

Vulcan Energy Corp. engages in the provision of upstream and midstream oil and gas services. It operates crude oil and natural gas wells. The company was founded in 1976 and is headquartered in Dallas, TX.

QR Energy LP engages in the acquisition, exploitation, development and production of oil and natural gas properties. Its assets are located in the Permian, Ark-La-Tex, Mid-Continent, Gulf Coast and Michigan regions. The company was founded on September 20, 2010 and is headquartered in Los Angeles, CA.