Add another record to the Boston Celtics' historic legacy.

The Celtics are being sold for a record $6.1billion to a group led by Bill Chisholm, the co-founder and managing partner for Symphony Technology Group, the sides announced on Thursday.

The sale price would surpass the $6.05billion paid to buy the NFL's Washington Commanders in 2023 for the richest deal in the history of United States major pro sports.

The previous record for an NBA team was the $4billion paid by mortgage firm owner Mat Ishbia for the Phoenix Suns in 2023.

"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. "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 organisation to the people of Boston, and I am up for this challenge."

BREAKING: Bill Chisholm, managing partner at Symphony Technology Group, has agreed to purchase the Boston Celtics from the Grousbeck family for a valuation for $6.1 billion, sources tell ESPN. This now is the largest sale for a sports franchise in North America. pic.twitter.com/iPphqSQswe

— Shams Charania (@ShamsCharania) March 20, 2025

One of basketball's most iconic franchises, the Celtics captured their record 18th NBA title last June.

They entered play Thursday in second place in the Eastern Conference with a 50-19 record, having already clinched the Atlantic Division.

The Celtics have been owned by a group led by Wyc Grousbeck since 2002, when the franchise was purchased for $360million.

Chisholm has asked for Grousbeck to stay on as CEO and Governor of the Celtics for the next three seasons.

The sale still needs to be approved by the NBA's board of governors, which likely won't be made official for several months.