The sale of the Boston Celtics has been finalized. Private equity mogul Bill Chisholm has taken control of the NBA’s most-decorated franchise from a group led by Wyc Grousbeck that had owned them for more than two decades.

There were concerns that he might not return after his contract was up, and his status in terms of health was unclear after a knee injury.

Bill Chisholm has officially completed his $6.1 billion purchase of the Celtics from Wyc Grousbeck and is the team's new owner.

The Celtics have made it official with the leadership structure between new governor Bill Chisholm and longtime owner Wyc Grousbeck.

The Boston Celtics are officially under new leadership today, and it’s not just about a record‑setting price tag. The NBA Board of Governors has unanimously approved the $6.1 billion sale of the franchise to private equity executive and lifelong fan Bill Chisholm.