Celtics Sold for $6.1 Billion to Symphony Co-Founder

BOSTON, Mass. — The ownership group of the Boston Celtics has confirmed an agreement to sell the team to William Chisholm, managing director and co-founder of Symphony Technology Group, for $6.1 billion, as reported by the Globe on Thursday.

Chisholm, a Dartmouth graduate and lifelong Celtics fan, hails from Georgetown, Massachusetts. His firm, Symphony Technology Group, is a California-based private equity firm. He previously co-founded The Valent Group, further establishing his business credentials.

Wyc Grousbeck, co-owner of the Celtics, is expected to continue overseeing the team during the transition period. The Grousbeck family initially announced plans to sell 51 percent of the franchise in late 2024 or early 2025, citing estate and family planning considerations.

The players, largely kept out of the sales discussions, have expressed hope that the change in ownership will not disrupt the team’s current trajectory. All-Star forward Jayson Tatum stated his optimism regarding the new owners. “I look forward to whoever it is,” Tatum said this week. “I trust [Grousbeck] and those guys in their decision. And understanding the culture that we’ve set and we have, and sustaining that and trying to make it better.”

Tatum also emphasized the importance of maintaining the strong foundation the Celtics have built, highlighting the dedication and hard work of everyone in the organization. “We’ve got some great people in this organization and on this team, and we’ve worked really hard to build something special. I trust that they’ll make the right decisions in whoever that next group is,” he added.

The sale reflects a significant moment in the franchise’s history, which boasts a storied legacy of success in the NBA. The Celtics, founded in 1946, have had numerous championships and are regarded as one of the league’s premier teams.

The Globe news team will continue to provide updates on this evolving story.