James M. Whipkey

Lehman Brothers Holdings, Inc. engages in the provision of securities underwriting and investment services. The company is headquartered in New York, NY.

Red Oak Capital Management LLC is a private equity firm. The private company is based in Houston, TX. The company was founded by James M. Whipkey, Robert E. Rasmus.

Harvest Natural Resources, Inc. is a petroleum exploration and production company, which engages in the business of acquiring, exploring, developing, and producing properties in geological basins with proven active hydrocarbon systems. It operates through the following geographical segments: Gabon, Indonesia, and the United States and Other. The company was founded on September 9, 1988 and is headquartered in Dallas, TX.

Kidder, Peabody & Co., Inc. provides security brokerage services. The private company is based in Buffalo, NY and has subsidiaries in Switzerland. The company was founded by Thomas W. Ostrander.

Hi-Crush Proppants LLC engages in the provision of proppant and logistics solutions to the North American petroleum industry. The firm owns and has options to acquire sand excavating and processing locations located in Wisconsin. It also offers premium frac sand and logistics services to E&P companies, integrated service companies and pressure pumping companies, on contract and spot basis. Its services include transload, terminal and storage, and railcar storage and handling. The company was founded by Robert E. Rasmus and James M. Whipkey in October 2010 and is headquartered in Houston, TX.

Hi-Crush, Inc. engages in the production of monocrystalline sand. It owns, operates, and develops sand reserves and related excavation as well as processing facilities. The firm supplies frac sand and logistics services. The company was founded on May 8, 2012 and is headquartered in Houston, TX.

Hi-Crush GP LLC is a producer and supplier of premium Northern White frac sand, which is used as a preferred prop pant in unconventional oil and gas wells. The company was founded in 2010 and is headquartered in Houston, TX.