Harold Simmons

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.

Hansa Hydrocarbons Ltd. provides gas exploration services. It aims to grow a high-value business from exploiting the remaining potential for gas across the prolific Permian Basin that extends from the Southern North Sea through onshore Northern Europe. The company was founded on November 5, 2012 and is headquartered in London, the United Kingdom.

MCubed Properties Investments, Inc. invests in the energy sector. The company was founded in 1989 and is headquartered in Houston, TX.

Spartan Offshore Drilling LLC provides offshore drilling services. It provides jack-up well drilling, workover and completion services throughout the Gulf of Mexico and the Cook Inlet Alaska. The firm also focuses on providing its services in the Middle East, Mexico, and Southeast Asia. The company was founded in 2002 and is headquartered in Slidell, LA.

Celtique Energie Holdings Ltd. operates as a holding company with interests in the exploration and production of oil and natural gas. It develops oil and natural gas discoveries and prospects in onshore basins through its subsidiary Celtique Energie Ltd. The company was founded in 2006 and is headquartered in London, the United Kingdom.

Duke University is an academic university that offers undergraduate, graduate and professional programs. It also has publications and research services. The university was founded in 1838 and is headquartered in Durham, NC.

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.

Sidewinder Drilling LLC engages in the operation of land drilling rigs. It provides contract drilling services to exploration and production industries. The company was founded by Jon C. Cole in April 2011 and is headquartered in Houston, TX.

Credit Suisse (USA), Inc. provides investment services. It offers securities underwriting and trading, mergers & acquisitions advice, research, private equity investment & derivative, and risk management services. The company was founded in 1959 and is headquartered in New York, NY.

Appalachian Midstream Partners LLC engages in natural gas gathering, transportation, treatment and processing, and pipelines conversions services. It develops and operates midstream assets that reduce upstream operational costs, provide consistent reliable access to market and meet customer expectations with timely and superior service. The firm focuses on providing competitive transportation and processing solutions for energy projects in various development stages. It offers gathering, transportation and processing services. The company was founded in 2010 and is headquartered in Wexford, PA.

AEC Holdings LP (AEC Partners) is a private equity subsidiary of Avista Capital Holdings LP founded in 2017. The firm is headquartered in Houston, Texas.

Drylet, Inc. is a private company based in Houston, TX, with Trevor M. Turbidy as the CEO since 2020. The company specializes in providing products for bioremediation, wastewater treatment, animal waste treatment, and grease reduction in wastewater treatment plants and restaurant kitchens. The company's patented product, Bio React AD, enhances the degradation of undigested solid waste in biodigesters, boosting biogas generation by 30+%. The company also offers Aqua Assist, a product that helps in the treatment of wastewater. Drylet's products are safe for human, animal, and aquatic life, and they do not contain any genetic modifications or chemical ingredients. The company recently announced steps to achieve profitability and free cash flow.

Texas American Resources Co. LLC operates as an independent oil & gas exploration and production company. It operates assets located in Atascosa, Dimmit, Frio, La Salle, and Zavala Counties. The firm specializes in geology, engineering, finance, and land. The company was founded by David E. Honeycutt in 1990 and is headquartered in Austin, TX.

Donaldson, Lufkin & Jenrette is a private company that provides investment banking services. The company is based in New York, NY.

University of Houston System offers higher education degrees and job training or vocational study programs. It offers about 280 undergraduate and graduate degree programs in fields such as business, education, humanities and law. It was founded in 1927 and is headquartered in Houston, TX.

Texaco, Inc. explores and produces oil and natural gas. It engages in the worldwide exploration, production and marketing of crude oil, natural gas, and petroleum products. The company was founded in 1902 and is headquartered in San Ramon, CA.

Trico Marine Services, Inc. provides marine support services, which includes subsea services, subsea trenching and protection services and towing and supply vessels to oil and natural gas exploration and production companies that operate in major offshore producing regions around the world. It conducts its business through three operational segments: Subsea Services, Subsea Trenching & Protection, and Towing & Supply. The company was founded in 1993 and is headquartered in The Woodland, TX.

ACP III Utica LLC acquires and develops oil and natural gas assets. The company is headquartered in Houston, TX.

Southern Methodist University is a private university near the center of Dallas, SMU offers undergraduate, graduate, and professional programs through seven schools in the humanities and sciences, business, the performing, visual, and communication arts, engineering, education and human development, law, and theology.

ACP II Marcellus LLC operates as a holding company with interest in acquiring and exploiting natural gas assets. The company was founded in 2008 and is headquartered in Houston, TX.

Laramie Energy II LLC engages in the business of finding and developing natural gas reserves from unconventional gas reservoirs. The company was founded by Kenneth G. Leis and Robert Stephen Boswell in July 2007 and is headquartered in Denver. CO.

Laredo Energy develops natural gas reserves. The company is in the process of acquiring leases and drilling wells based on approximately 1,100 square miles of 3-D seismic data. The company was founded by Scott G. Stevenson, Glenn D. Hart and Steven B. Jaques in October 2001 and is headquartered in Houston, TX.

aPriori Capital Partners LP (aPriori Capital Partners) is a private equity firm founded in 1985 by Susan C. Schnabel and Colin Taylor. The firm is headquartered in Los Angeles, California.

Laredo Energy IV LP engages in the acquisition, exploration, and development of natural gas resources in the Lobo Trend in South Texas. The company was by Glenn D. Hart, Scott G. Stevenson, Robert L. Swanson, and Steven B. Jacques in 2001 and is headquartered in Houston, TX.

White Deer Management LLC (White Deer Management) is a private equity firm founded in 2008 by Benjamin Allen Guill and Thomas Jeffery Edelman. The firm is headquartered in Houston, Texas with additional office in New York.

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.

Ultra Tech Frac Services LLC provides hydraulic fracturing services. The company is headquartered in Houston, TX.