Daniel Gaisin

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.

The Carlyle Group LP (Global Private Equity) is a private equity firm founded in the year 1990 by William E. Conway, Jr. and Daniel A. D'Aniello. The firm is headquartered in Washington DC.

FirstMark Capital LLC (FirstMark Capital) is venture capital firm founded by Rick Heitzmann and Amish Jani in 1996. The firm is headquartered in New York.

FirstMark Horizon Acquisition Corp. operates as a blank check company. Its business purpose is to effect a merger, capital stock exchange, asset acquisition, stock purchase, and reorganization. The company was founded on August 13, 2020 and is headquartered in New York, NY.

FirstMark Acquisition Corp. II operates as a blank check company. The company was founded on February 8, 2021 and is headquartered in New York, NY.

FirstMark Acquisition Corp. III is a blank check company formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. The company was founded in February 18, 2021 and is headquartered in New York, NY.