Boston changes era: Record $6.1 billion sale reshapes Celtics’ future this summer

The NBA approved on Wednesday the sale of the Boston Celtics to the investment group led by Bill Chisholm. This $6.1 billion transaction marks a turning point for the 2024 NBA champions. It also ends more than twenty years under Wyc Grousbeck’s leadership.

Bill Chisholm takes immediate control

Initially, Grousbeck was supposed to remain governor until 2028. However, Chisholm will take on this role as soon as the sale is finalized, expected this week according to ESPN. Grousbeck will remain CEO and become alternate governor, following the model adopted by Mark Cuban at the Dallas Mavericks in 2023.

The Grousbeck family had purchased the Celtics in 2002 for $360 million. This sale initially represented the largest transaction in NBA history, before being surpassed by the sale of the Lakers to Mark Walter for $10 billion.

It’s official ✔️ pic.twitter.com/zQAJAI1goR

— Celtics on NBC Sports Boston (@NBCSCeltics) August 13, 2025

Transition already underway with Brad Stevens

Bill Chisholm expressed confidence regarding the franchise’s sporting continuity. « I’ve had several meetings with Brad and it’s about aligning our goals and extending this team’s window. The plans that Wyc and Brad have established make perfect sense to me, » he had told ESPN when the sale was announced.

The new owner is joined by Aditya Mittal, son of steel magnate Lakshmi Mittal and CEO of ArcelorMittal. Aditya Mittal is expected to become alternate governor in 2028, when the second tranche of Grousbeck’s shares is definitively sold.

This new era begins in a particular context for Boston, with a transition season following Jayson Tatum‘s serious injury during the last playoffs. Chisholm and Brad Stevens have already undertaken a broad roster review this summer to reduce the reigning champions’ salary cap.