Giants Owner John Mara Announces Unfortunate Personal Update on Monday

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Giants Owner John Mara Announces Unfortunate Personal Update on Monday

Originally posted on Athlon Sports
By Rowan Fisher-Shotton | Last updated Sep 29, 2025 2:48 PM ET

John Mara, 70, the president, CEO and co‑owner who has led the New York Giants since 2005, is one of the NFL's most recognizable and respected owners.

Mara has been at the center of Giants operations for more than three decades (joined in 1991 as General Counsel) and is part of a multigenerational ownership dynasty that founded the franchise in 1925.

Sadly, Mara disclosed in a statement released by the team on Monday that he has been diagnosed with cancer and is already following a treatment plan.

He noted how he is "feeling strong and optimistic" and "plans to remain active with the team throughout my treatment,” while asking for privacy for his family.

pic.twitter.com/Mia1gUFTUj
— New York Giants (@Giants) September 29, 2025

Under Mara's oversight, the Giants have reached three Super Bowls and won two (XLII and XLVI).

He is also the chairman of the league's Management Council Executive Committee, works with the NFL's Health and Safety, Compensation, Workplace Diversity and Legalized Sports Betting committees and played a central role in the 2011 and 2020 collective bargaining agreements with the NFL Players Association (NFLPA).

Simply put, he's been one of the most influential figures in pro football for the last two decades.

Mara's latest health update comes amid a high-profile minority stake transaction between the Mara and the Koch families.

Julia Koch and members of the Koch family agreed in early September to buy roughly 10% of the Giants in a deal that values the franchise at about $10 billion, pending NFL-owner approval.

That sale, which does not remove Mara from day-to-day control, would nearly double the previous North American professional record of $6.05 billion that Josh Harris' group paid to purchase the Washington Commanders in 2023.

This article first appeared on Athlon Sports and was syndicated with permission.

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