Aditya Mittal Joins Celtics Ownership in $6.1B Deal

Aditya Mittal, CEO of ArcelorMittal, will invest $1 billion in the Boston Celtics, becoming the second-largest stakeholder in William Chisholm's $6.1 billion acquisition of the team. Mittal may serve as the alternate governor, with Chisholm set to take over as team governor from Wyc Grousbeck after the 2027-28 season. The investment closes a key funding gap and boosts international involvement in U.S. sports ownership. The sale represents the most expensive control transaction in U.S. sports history and awaits NBA Board of Governors approval, expected by summer. Mittal will maintain his corporate role while contributing strategic expertise to the franchise. The transition occurs as the Celtics navigate roster and financial challenges following a disappointing playoff performance.