The Boston Celtics are set to be sold to a group led by Bill Chisholm, co-founder of private equity firm Symphony Technology Group, in a record-breaking $6.1bn deal.

The purchase price marks the highest valuation ever for a North American sports franchise, surpassing the $6.05bn sale of the Washington Commanders in 2023.

The sale follows nine months of deliberation after Celtics majority owner Wyc Grousbeck announced plans to sell the team. The Grousbeck family, which purchased the franchise for $360m in 2002, oversaw a highly successful era that included two NBA championships and four Finals appearances. Forbes valued the Celtics at $6bn in October 2024, aligning closely with the reported sale price.