David Weinhoffer

ASARCO LLC engages in the mining, smelting and refining of copper. Its products include copper cathode, rod and cake. The firm operates a copper smelter in Hayden, Arizona and a copper refinery in Amarillo, Texas. The company was founded in 1899 and is headquartered in Tucson, AZ.

BJ Services Co. LLC engages in the provision of pressure pumping, cementing, stimulation, and coiled tubing services. The company was founded on May 30, 1990 and is headquartered in Houston, TX.

Rowan Cos., Inc. engages in the provision of contract drilling services to the oil and gas industry. The company was founded by Charles Rowan and Archibald Rowan in 1923 and is headquartered in Houston, TX.

Luminant Worldwide Corp. provides Internet and electronic commerce professional services. It services include, strategy consulting, creative solutions, technology solutions and ongoing services. The company was founded in August 1998 and is headquartered in Houston, TX.

Summit Management Group LLC provides healthcare management services. The American company was founded by John P. Conrad.

Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA.

Oceaneering International Services Ltd. provides engineered services and products for offshore oil and gas industry with a focus on deep-water applications. It serves the defense, entertainment, and aerospace industries. The company was founded on September 6, 1971 and is headquartered in Cleveland, the United Kingdom.

Part of TechnipFMC plc, Sub Sea international is an American company that makes robotic systems and provides engineering services to offshore oil and gas industries. The company is based in SC. Sub Sea international was acquired by Technip USA, Inc. (Louisiana) from Dresser Industries, Inc. on July 31, 1997 for $102 million.

St. Luke's Episcopal Hospital provides medical and healthcare services. Its services include home health care, outpatient, surgical, cancer care, pulmonary care, rehabilitation therapy, and other health care services. The company was founded in 1954 and is headquartered in Houston, TX

The Houston Museum of Natural Science operates a national museum. It consists of a planetarium, environmentally-controlled butterfly center, off-site observatory, advanced IMAX theatre and temporary and permanent exhibit halls. The museum features displays on subjects such as space science, energy, paleontology, chemistry, gems and minerals, ancient Egyptians, Native Americans and Texas wildlife. The company was founded in 1909 and is headquartered in Houston, TX.

The National Petroleum Council operates as a council for national petroleum. The private company is based in Washington.

Avista Capital Holdings LP (Avista Capital Partners) is a private equity firm founded in 2005 by Steven Webster and Thompson Dean. The firm is headquartered in New York.

Falcon Partners LLC (Falcon Partners) is a venture capital firm founded in 2002 by Michael J. Riccio. The firm is headquartered in Seattle, Washington.

Sirius Solutions LLLP provides business consulting services. The company specializes in compliance, financial reporting, technology solutions, energy consulting areas. The firm serves the agriculture, banking, biotechnology, capital markets, chemicals, commodity trading, construction, consumer services, and entertainment industries. The company was founded in 2002 and is headquartered in Houston, TX.

Georgia Tech Foundation, Inc. provides educational services. It promotes the cause of higher education in the State of Georgia, receives and manages financial donations received by the foundation for support and enhancement of the Georgia Institute of Technology and assists the Georgia Institute of Technology in its role as a leading educational and research institution. The company was in 1932 and is headquartered in Atlanta, GA.

Part of The National Academies of Science, the National Academy of Engineering operates as a professional membership organization. The company is based in Washington.

The Explorers Club is a professional society founded in 1904 that is dedicated to the advancement of field research, scientific exploration, and resource conservation. The private company is based in New York, NY. Members of the club have explored the earth, seas, skies, and even the moon. The company offers opportunities to carry their historic flag in the field during exploration and supports young explorers from around the world through grants. The official online store of the Explorers Club is available, and the company provides updates on the latest announcements and news related to the club.

Darnall, Sikes & Frederick CPAs is a private company that provides a range of professional services including audit and accounting, tax, litigation support, human resources, and technology consulting. The company is based in Lafayette, LA and has subsidiaries in the United States.

Ranger Offshore, Inc. provides marine and subsea construction support services to the oil and gas industry. Its services include diving services, portable saturation diving, inspection, repair and maintenance, decommissioning, and pipeline and offshore construction. The company was founded in 2008 and is headquartered in Houston, TX.

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 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.

Founded in 2015, Ecosse Subsea Ltd. is a British business support services company that is part of Oceaneering International, Inc. The company is based in Aberdeenshire, UK.

Founded in 2015, Ecosse Subsea Scar Holdings Ltd. functions as an investment holding company. Part of Oceaneering International, Inc., the company is based in Dyce, UK.