Aditya Mittal, CEO of the steel giant ArcelorMittal, has committed $1 billion to help finalize the purchase of the Boston Celtics, according to reports by Sportico and Bloomberg.
Mittal, part of one of India’s wealthiest families, is set to become the second-largest owner of the Celtics and may serve as an alternate governor in the future.
The primary owner will be William Chisholm, a private equity executive whose group agreed to buy the Celtics in March for $6.1 billion—the highest price ever paid for a U.S. sports team. Chisholm is expected to take over as team governor after the 2027-28 NBA season.
When the sale was announced, the full financing was not yet secured. However, Mittal’s investment brings the ownership group closer to meeting the agreed purchase price.
ArcelorMittal, led by Mittal’s father Lakshmi Mittal, is the world’s largest steel and mining company by output, generating about $68 billion in revenue. Lakshmi Mittal also serves on the board of Goldman Sachs, the financial adviser for Chisholm’s group.
The sale still requires approval from the NBA’s Board of Governors, which is expected in the coming months. Once approved, Chisholm’s group will acquire a 51% stake in the Celtics, with the remaining shares transferring after the current governor, Wyc Grousbeck, steps down in 2028.
Chisholm has been seen courtside at Celtics games since the deal was announced, often alongside Grousbeck. The Celtics remain focused on competing for a title as the ownership transition progresses.
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