A group led by Bill Chisholm, managing partner at Symphony Technology Group, has agreed to purchase the Boston Celtics for a valuation of $6.1 billion, sources told ESPN’s Shams Charania.
That price would surpass the $6.05 billion price a group led by Josh Harris paid to buy the NFL’s Washington Commanders in 2023 as the most paid for a franchise in North American sports history, and would easily surpass the record number for the control stake of an NBA team, which was set two years ago when Mat Ishbia bought the Phoenix Suns for $4 billion.
A Massachusetts native and graduate of Dartmouth College and Penn’s Wharton School of business, Chisholm is the managing partner of California-based Symphony Technology Group.
The new ownership group also includes Boston business leaders Rob Hale, who is a current Celtics shareholder, and Bruce Beal Jr.

“Growing up on the North Shore and attending college in New England, I have been a die-hard Celtics fan my entire life,” Chisholm said in a statement announcing Thursday’s agreement. “I understand how important the Celtics are to the city of Boston — the role the team plays in the community is different than any other city in the country. I also understand that there is a responsibility as a leader of the organization to the people of Boston, and I am up for this challenge.”

The agreement calls for a two-part sale in which Chisholm would acquire at least 51% of the team upon approval by the NBA’s board of governors, which could come as soon as this summer.

Current owners would have the option to retain the remainder of their shares until 2028, when they would be sold at a price that could be up to 20% higher, based on a formula determined by league revenue growth.