Alexander Klabin

York Capital Management Global Advisors LLC, dba York Capital Management (York), is an independent, SEC-registered investment advisor and hedge fund manager headquartered in New York City. The firm was founded by James Dinan in 1991 as JGD Management Corp. York provides investment advice to a variety of private investment partnerships and offshore investment funds. The funds are comprised of various types of investors, including high net-worth individuals, pension and profit-sharing plans, trusts, estates, charitable organizations, corporations, business entities, endowments, and foreign sovereign wealth funds.

Supernova Partners Acquisition Co., Inc. operates as a blank check company. Its services include effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization, and other business combination activities. The company was founded by Spencer M. Rascoff, Alexander Mathew Klabin, Robert D. Reid, and Michael S. Clifton on August 31, 2020 and is headquartered in Washington, DC.

Quadrangle Group LLC (Quadrangle Group) is a private equity firm founded in 2000. The firm is headquartered in New York.

Goldman Sachs & Co. LLC (GS&Co.) is a securities brokerage firm headquartered in New York City. Founded in 1927, the firm is a subsidiary of The Goldman Sachs Group, Inc. (NYSE: GS). GS&Co. provides services to help hedge funds manage risk, monitor portfolios, maintain liquidity and build their businesses. They offer clients access to global equity and derivatives markets, as well as foreign exchange, commodities, European Lefts, rates and credit across the Americas, Europe and Asia. The firm proactively monitors capital markets, searching for pockets of liquidity and news that may require changes to those strategies. Integration with the Goldman Sachs network gives clients access to the firm's sectored block trades and their insights into price discovery. Their electronic trading program provides clients with tools to manage their trades from pre-trade analytics to post-trade analysis.

The Allen-Stevenson School provides elementary education for boys. It provides pre-secondary program of academics, athletics, and the arts. The company was founded in 1883 and is headquartered in New York, NY.

New York Philharmonic provides live theatrical presentations. The company was founded in 1842 and is headquartered in New York, NY.

The Nantucket Project LLC conducts programs, presentations, and candid discussions of visionaries, thinkers, innovators, and performers in the United States. The company was founded in 2011 by Thomas Scott and Kate Brosnan and is headquartered in Greenwich, CT.

Enstructure LLC engages in the provision of logistic and infrastructure services. It stevedoring, truck and rail services, warehousing and storage, and marine services. The company was founded by Ken Budreau and Philippe de Montigny in 2015 and is headquartered in Wellesley, MA.