David Leuschen

Intank, Inc. provides robotic technologies for cleaning and inspecting tank floors. It offers cleaning/decontamination equipment products, spent fuel, vessel, and reactor pool cleaning/decontamination, condensers, robotic equipment/manipulators, and remote handling technology. The company is headquartered in Laurel, MD.

Petroplus & Associates, Inc. provides property management services. It specializes in asset management, development, sales, leasing, and tenant representation. The company was founded by by Parry G. Petroplus in 1976 and is headquartered in Westover, WV.

Switchback Ranch LLC operates a cattle ranch.

Shelter Bay Energy, Inc. operated as an oil and gas investment company. It produced light oil in the Viewfield Bakken resource play in south east Saskatchewan. The company was founded in 2008 and was headquartered in Calgary, Canada.

Riverstone Holdings LLC operates as an energy focused investment manager. It conducts buyout and growth capital investments in the exploration and production, midstream, oilfield services, power, and renewable sectors of the energy industry. The company was founded by David Matthew Leuschen and Pierre Fernard Lapeyre, Jr. in 2000 and is headquartered in New York, NY.

Legend Natural Gas IV LP develops and explores natural gas & oil reserves. It is a North American natural gas focused acquisition, development and exploitation company comprised of all the key managers from 'Legend l' and 'Legend ll' and deploying the same strategy. The company was founded in 2009 and is headquartered in Katy, TX.

Riverstone Energy Ltd. operates as a closed-ended energy investment company. It intends to invest exclusively in the global energy industry located in the United States, Mexico, Western Canada, Norway and United Kingdom. The fund invests in the global energy sector, with a particular focus on opportunities in the E&P and midstream energy sub-sectors.

Riverstone Investment Group LLC (Riverstone Investment Group) is a private equity firm, subsidiary of Riverstone Holdings LLC, founded in 2000 by Pierre F. Lapeyre, Jr. and David M. Leuschen. The firm is headquartered in New York.

Silver Run Acquisition Corp is a blank check company formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. The company was founded on November 4, 2015 and is headquartered in Houston, TX.

Alta Mesa Resources, Inc. is an independent exploration and production company, which is engages in the development of unconventional onshore oil and natural gas reserves. It operates through the following segments: Exploration and Production, Midstream, and Corporate. The Exploration and Production segment sells its production of oil, natural gas, and natural gas liquids (NGL) to customers generally at prevailing spot prices in effect at the time of the sale. The Midstream segment derives its revenue from fees assessed for gathering and processing natural gas, gathering and transporting oil, the sale of processed residue gas and NGLs, and produced water gathering and disposal services. The company was founded in November 2016 and is headquartered in Houston, TX.

Alta Mesa Holdings LP engages in the acquisition, exploration, development and production of oil, natural gas, and natural gas liquids within the United States. It specializes in engineering analytics and enhanced geological techniques including three-dimensional seismic analysis, and drilling, stimulation, completion, and production methods. The company was founded by Michael E. Ellis in 1987 and is headquartered in Houston, TX.

Part of Alta Mesa Resources, Inc., Alta Mesa Holdings, LP is a privately held company located in the US. Alta Mesa Holdings, LP is engaged in onshore oil and natural gas acquisition, exploitation, exploration, and production. The American company's focus is to maximize the profitability of their assets in a safe and environmentally sound manner. The CEO of the company is Harlan H. Chappelle.

Dresser LLC provides products and services used for developing energy and natural resources. The company offers control products (relief valves, actuators, meters, fittings, and the like for oil and gas exploration), measurement systems (gas pumps and point of sale terminals made by business unit Dresser Wayne), power and compression systems (Waukesha engines, fuel testing systems), and other infrastructure technologies (Roots blowers and compressors, piping, and pumps). Dresser was founded in 1880 and is headquartered in Addison, TX.

Peter G. Peterson Institute for International Economics operates as a research institution which engages in an international economic policy. The company is headquartered in Washington, DC.

Conservation International Foundation operates and supports environmental conservation services. It promotes sustainable care for the nature. Through science, policy and field work, they're applying solutions to protect the natural resources. It helps communities, countries and societies protect tropical forests, grasslands, rivers, wetlands, lakes and the sea. The company was founded in 1987 and is headquartered in Arlington, VA.

Decarbonization Plus Acquisition Corp. II is a blank check company, which formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more entities. The company was founded on December 4, 2020 and is headquartered in Menlo Park, CA.

Decarbonization Plus Acquisition Corp. III operates as a blank check company. It is formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination. The company was founded on January 29, 2021 and is headquartered in Menlo Park, CA.

Decarbonization Plus Acquisition Corp. IV operates as a blank check company. It was formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization, or similar business combination with one or more businesses. The company was founded on February 22, 2021 and is headquartered in Menlo Park, CA.

Part of The Goldman Sachs Group, Inc., J. Aron & Co. LLC is a company that provides commodities brokerage services. The company is based in New York, NY.

Fieldwood Energy, Inc. engages in the acquisition, exploration and development of oil & gas properties. The company was founded in September, 2013 and is headquartered in Houston, TX.

The United States Olympic Endowment is an independent nonprofit company that creates as an endowment for sports in the Olympic Movement in the United States. The company was founded in 1984 and is headquartered in Colorado Springs, CO.

XTO Energy Inc. operates as a domestic energy producer engaged in the acquisition, development, and discovery of oil and natural gas properties in the United States. It specializes in the development of tight gas, shale gas, coal bed methane, and unconventional oil resources. The company was founded by Steve Palko, Bob Simpson and Jon Brumley in 1986 and is headquartered in Spring, TX.

Pipestone Energy Corp. is an oil and gas exploration and production company, which focuses on developing its condensate assets in the Pipestone area of Alberta. The company was founded on January 4, 2019 and is headquartered in Calgary, Canada.

Part of Talen Energy Corp., Cumulus Digital Holdings LLC is an investment holding American company. The company is located in the US. The CEO of the company is Alex Hernandez.

Pattern Energy Group LP develops, constructs, owns and operates renewable and transmission energy assets. Its operations include regular inspections, staff training, long-term service and maintenance and safety. The company was founded by Michael M. Garland in June 2009 and is headquartered in San Francisco, CA.

Centennial Resource Development LLC provides investment services. The company was founded on July 9, 2013 and is headquartered in Denver, CO.

Decarbonization Plus Acquisition Corp. is a blank check company, which engages in effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. The company was founded on September 7, 2017 and is headquartered in Menlo Park, CA.