The New York Giants were founded in 1925 by Tim Mara and have been part of the Mara family ever since.
Team ownership was passed to Tim’s sons, Jack and Wellington Mara, in 1959, and now the team is run by principal owner, CEO, and president John Mara, who took over in 2005 after his father, Wellington’s, death. John Mara had been with the organization since 1991.
However, while John Mara is listed as the team’s principal owner, he’s actually shared ownership with Steve Tisch since 2005.
Steve Tisch’s father, Preston Robert Tisch, purchased a 50% stake in the Giants in 1991, and after his death, Steve became chairman and executive vice president.
Together, Mara and Tisch helped plan and build MetLife Stadium, and the team has won two Super Bowls (2008 and 2012) under their leadership. However, the team has struggled in recent years, winning just four games last season.
Still, the Giants are the fourth most valuable team in sports, worth $10.1 billion. Tisch has an estimated net worth of $1.6 billion, Forbes reported, while Mara reportedly has an estimated net worth of $500 million.
Tisch was not named in the 2025 report card; Mara was given a C+ ownership ranking by the NFLPA.