The sale of the Boston Celtics will be finalized Thursday, and there will be a surprising leadership change at the top of the chain, SportsCenter 5’s Duke Castiglione has learned. William Chisholm, managing director and co-founder of Symphony Technology Group, will take ownership on Thursday after the $6.1 billion deal is finalized. The deal was first announced in March.Wyc Grousbeck will continue in his role as CEO but relinquish the role of governor to Chisholm, Castiglione has learned. Grousbeck was expected to retain both roles through the 2027-28 NBA season.The governor generally has the final say on NBA team decisions. Chisholm grew up in Georgetown, Massachusetts, and is a Dartmouth College graduate.”(Chisholm) is born and raised here, so it really helps,” Grousbeck said in March. “I think it helped him make his bid the best bid, because he really wanted this. As he said, he bleeds green. So, when you get to know him, I think once the fans, all of us, really get to know him, we’re going to be really excited about it.”In July 2024, Grousbeck’s family announced they were selling their controlling interest in the team. Grousbeck led the group that bought the Celtics for $360 million in 2002. Under his ownership, the team won its 17th championship title in 2008 and brought home its 18th banner in 2024.Look back: Each of the Boston Celtics’ 18 NBA championshipsSymphony Technology Group is a California-based private equity firm. Chisholm previously co-founded The Valent Group and also worked at Bain & Company and PaineWebber.

The sale of the Boston Celtics will be finalized Thursday, and there will be a surprising leadership change at the top of the chain, SportsCenter 5’s Duke Castiglione has learned.

William Chisholm, managing director and co-founder of Symphony Technology Group, will take ownership on Thursday after the $6.1 billion deal is finalized. The deal was first announced in March.

Wyc Grousbeck will continue in his role as CEO but relinquish the role of governor to Chisholm, Castiglione has learned. Grousbeck was expected to retain both roles through the 2027-28 NBA season.

The governor generally has the final say on NBA team decisions.

Chisholm grew up in Georgetown, Massachusetts, and is a Dartmouth College graduate.

“(Chisholm) is born and raised here, so it really helps,” Grousbeck said in March. “I think it helped him make his bid the best bid, because he really wanted this. As he said, he bleeds green. So, when you get to know him, I think once the fans, all of us, really get to know him, we’re going to be really excited about it.”

In July 2024, Grousbeck’s family announced they were selling their controlling interest in the team. Grousbeck led the group that bought the Celtics for $360 million in 2002. Under his ownership, the team won its 17th championship title in 2008 and brought home its 18th banner in 2024.

Look back: Each of the Boston Celtics’ 18 NBA championships

Symphony Technology Group is a California-based private equity firm. Chisholm previously co-founded The Valent Group and also worked at Bain & Company and PaineWebber.