Otis Spencer

Schramm, Inc. manufactures well drilling rigs and equipment. It offers new and pre-owned walking pad rigs, trailers mounted rigs, carrier mounted rigs, track mounted exploration rigs, and trucks for use in energy, mineral exploration, geothermal, and water well sectors. The company also offers field service support, training, parts and product support, and sales support, as well as operates service, sales, and parts centers. The firm sells its products through a network of authorized distributors and servicing dealers. The company was founded by Edward J. Breiner and Chris Schramm in 1900 and is headquartered in West Chester, PA.

GenNx360 Management Company LLC (GenNx360 Management) is a private equity firm founded in 2006 by Ronald Edward Blaylock and Lloyd George Trotter. The firm is headquartered in New York.

Tamko Building Products LLC manufactures construction products. It offers residential and low-slope commercial roofing, decking and railing, and waterproofing. The company was founded by E. L. Craig, Mary Ethel Craig, Ethelmae Craig Humphreys, Jay Humphreys and David C. Humphreys in 1944 and is headquartered in Galena, KS.

Part of Leidos Holdings, Inc., Varec, Inc. is a company that supplies hardware and software to the oil and gas, defense, and aviation markets. The company is based in Norcross, GA. Varec was acquired by Leidos, Inc. on September 13, 2006.