The Boston Celtics underwent a massive leadership change in August as Bill Chisholm officially became the franchise’s new owner. Chisholm’s entrance into the new role was rolled out through a lengthy process that began during the 2024-25 season, and he was already involved with the team — unofficially — during the latter stages of Boston’s regular season and playoffs. It must have been jarring, then, for Chisholm — a lifelong Celtics fan, by the way — to witness Jayson Tatum go down with a torn Achilles, and to witness president of basketball operations Brad Stevens cut massive costs and trade away multiple stars this summer, all within a few months of Chisholm’s takeover. Many a new owner would be flustered by the series of events, but not Chisholm. His even-keeled approach meant that he wasn’t bothered by all of the chaos, at least according to Stevens, who recently praised Chisholm during a phone interview with The Athletic‘s Celtics reporter, Jay King. “I called Bill and told him in the midst of (the offseason), ‘Hey, I just appreciate the way you’re thinking about it and going about it,'” Stevens said, per King. “‘Because you agreed to buy the team in March and there’s a lot of tough decisions and tough things that you have to go through in your first six months. That’s not easy.'” Story continues below advertisement “It’s one of the reasons why I’m so impressed with him because it’s like, he’s just got such a level, measured approach,” Stevens continued. “And I have been thankful for that for sure because this could certainly have been an emotional roller coaster for anyone and certainly was for me to just decide to make the deals and to retool.” Despite Stevens’ prudent retool, the Celtics still have a lot of talent remaining on the 2025-26 roster, a reality that Chisholm is no doubt well aware of, given his notable basketball IQ. Story continues below advertisement That roster will begin its regular season journey on Wednesday night, as the Celtics host the Philadelphia 76ers at TD Garden in game one of 82.