Sam Youssef

General Atlantic LLC (General Atlantic) is a private equity firm founded in 1980 by Charles F. Feeney. The firm is headquartered in New York.

Morgan Stanley & Co. LLC is a registered broker-dealer subsidiary of Morgan Stanley Domestic Holdings, Inc., ultimately owned by Morgan Stanley (NYSE: MS) in the US. Headquartered in New York City, the firm was founded in 1987 and provides debt and equity services including underwriting, M&A advice, securities dealing and brokerage and trade execution. Their client base ranges from large global institutional investors to hedge funds at the cutting edge of innovation in the industry.

Windhorse Capital Management LLC provides investment advice services. The firm offers CIO services and commingled funds. The company was founded by Richard M. Salem and is headquartered in Boston, MA.

Société Valsoft, Inc. engages in the development and acquisition of vertical software businesses. It offers coaching and formal management training, capital allocation processes, and other programs to improve earnings and generate organic growth. The company was founded by Sam Youssef and Stephane Manos in June 2011 and is headquartered in Montreal, Canada.

Valsef Capital, Inc. invest in software companies. The firm focuses in areas of the public markets. The company was founded by Ouissam Youssef in 2011 and is headquartered in Saint-Laurent, Canada.

Communications Software (Airline Systems) Ltd. provides aviation engineering and maintenance software services. The firm offers initial requirements studies, implementation support, user training, system tailoring and forward planning for a complete service. The company was founded by Gary Pollak in 1971 and is headquartered in Tiptree, the United Kingdom.

Trailhead Media LLC operates as an outdoor advertising company. The private company is based in Laurel, MS and has subsidiaries in the United States.

Part of Valsef Group, Valstone Corp., Inc. provides technology solutions and services to over 1,500 organizations worldwide in industries such as heavy construction materials, agriculture, grain, forestry, waste, and recycling. The Canadian company's team is composed of dedicated professionals who prioritize innovation and service to advance automation in their respective industries. Valstone's main focus is to acquire and expand vertical software businesses that offer mission-critical solutions in their niche markets.

Viking Global /Private Equity/ (Viking Global /Private Equity/) is a private equity subsidiary of Viking Global Investors LP. The firm is headquartered in New York with additional offices in Connecticut, California, London, and Hong Kong.