Nothing But Net

Private equity executive purchases Celtics.

Updated on May 6, 2025

William Chisholm ’91 — photo credit: Symphony Technology Group

The Grousbeck family has agreed to sell the Celtics to an investment group led by lifelong fan William Chisholm at a record-breaking valuation of $6.1 billion. The Massachusetts native is managing director and chief investment officer of Symphony Technology Group, a private equity firm he helped found in 2002. 

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Published: March 21, 2025