Monday, August 31, 2026
The FOS App Launches September 1 Pre-save on the App Store Today

The $6.1 Billion Celtics Sale Is Not Street-Legal Yet

A source familiar with the transaction told FOS that Bill Chisholm was clear on NBA rules and planned on becoming the single biggest owner of the team.

Adam Silver
Peter Casey-Imagn Images

It has taken the Timberwolves sale three years and counting to go through. It might not take that long for the sale of the Celtics to get approved, but one thing has become clear this week: Bill Chisholm’s complicated bid to buy the team is not wrapped up yet.

The Grousbeck family announced last week it had an agreement to sell the team to a group of investors, ostensibly led by Chisholm, for $6.1 billion in a multiyear deal that would let Wyc Grousbeck run the franchise until 2028. 

Chisholm is still an obscure figure, and it’s not clear how much money he has, but NBA owners are required to contribute at least 15% of the purchase price when they buy teams. In this case that would mean more than $915 million from Chisholm. 

A spokesperson for Chisholm declined to comment last week when asked by Front Office Sports if he was a billionaire. He did not qualify for popular billionaire lists maintained by Forbes and Bloomberg. The Bloomberg list cuts off at $6.38 billion; an “associate” of Chisholm told the New York Post he was “worth close to $4 billion.”

Chisholm’s private equity company Symphony Technology Group has $12 billion in assets under management.

On Wednesday, Axios reported Chisholm has “committed less money” to the Celtics deal than Sixth Street, the $100 billion San Francisco private equity firm that has reportedly committed $1 billion toward buying the team. 

According to Axios, Sixth Street spending more than Chisholm on the team would violate NBA rules that require PE firms to hold a smaller stake than the primary owner.

A source familiar with the transaction told Front Office Sports that Chisholm was clear on NBA rules and planned on becoming the single biggest owner of the team.

Current Celtics minority owner and losing bidder Steve Pagliuca warned about Chisholm’s bid in a letter to fans last week. “We had no debt or private equity money that would potentially hamstring our ability to compete in the future,” Pagliuca wrote, apparently alluding to the winning bid. The Celtics have hundreds of millions of dollars in luxury tax penalties on their roster coming due as soon as next year, making liquidity essential for any owner who wants to keep the team in NBA title contention, and Pagliuca wrote that his bid was well-capitalized enough to keep winning, “luxury taxes be damned.”

If Chisholm rounds up enough new money to dilute Sixth Street’s stake below the value of his own, he’d be compliant with NBA rules, as long as he continued to own 15% of the team. 

The other possibility raised by Axios is the idea that Chisholm obtain “some sort of waiver from the league.” But NBA commissioner Adam Silver shot that down Thursday at a press conference after the league’s ownership meetings. “At this time, there’s no contemplation of changing our ownership rules,” he said.

Silver said any certainty on the Celtics deal would be premature.

“It’s very early days in that transaction,” he said. “We’re just learning about it. We haven’t had a chance to not just vet potential new owners, but dig into the specifics of the deal.”

Sixth Street did not immediately respond to a request for comment. The company owns stakes in teams like the San Antonio Spurs and Real Madrid and recently bought a nine-figure stake in MLB’s San Francisco Giants.

This field is for validation purposes and should be left unchanged.

Sign up for
The Memo Newsletter

Get the biggest stories and best analysis on the business of sports delivered to your inbox twice every weekday and twice on weekends.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Linkedin
Whatsapp
Copy Link
Link Copied
Link Copied

What to Read

Pro Tennis Players Say Bring On the Influencers

“I love that they bring this fresh eye on tennis.”
Exclusive

Callaway Content Head, Good Good Marketing VP Out After Ad Fallout

Neither Callaway’s nor Good Good’s CEO saw the ad before publishing.
First at FOS

Runners-Up Offered Seahawks Stake After Losing Out on Team

The deal is closing “very soon,” a source says.

Aaron Donald Return Supercharges Rams’ Status As 2026 ‘It’ Team

His return raised expectations and shortened betting odds. 
podcast thumbnail mobile
Front Office Sports Today

A Conversation with Hall of Fame Coach Geno Auriemma on the UConn Dynasty and NIL Chaos

0:00

Featured Today

Aug 3, 2026; Washington, D.C., USA; Alexandra Eala (PHI) kisses the championship trophy during the trophy ceremony after her match against Jessica Pegula (USA) (not pictured) in the women's singles final of the 2026 Mubadala DC Open at Rock Creek Park Tennis Center. Mandatory Credit: Geoff Burke-Imagn Images

How Alex Eala Turned the Philippines Into a Tennis Nation

A December homecoming match could break tennis’s attendance record.
August 26, 2026

Deshaun Watson Has Done the Impossible: Unite Browns Fans

Watson was named the starter after complaining boos were “personal.”
August 23, 2026

Dan Snyder ‘Invisible’ in NFL Three Years After Commanders Sale

Snyder has had little to no contact with former NFL associates.
Soccer Football - Premier League - Arsenal v Burnley - Emirates Stadium, London, Britain - May 18, 2026 Arsenal's Kai Havertz scores their first goal past Burnley's Max Weiss
August 21, 2026

Why the Premier League’s Star-Power Shortage Doesn’t Matter

The world’s richest soccer league doesn’t rely on big stars to dominate.
August 12, 2026

Trendy Golf Hat Divide Is More Than a Fashion Fight

As golf has gotten trendier, so has the sport’s style.

Aaron Donald Returns to Rams

His one-year deal is worth $20 million.
August 27, 2026

Tampa City Council Narrowly Approves Rays Stadium Funding 

The long-sought-after project narrowly survives the city vote.
August 30, 2026

Josh Jacobs Put on Paid Leave by NFL

He can’t practice or play in games.
Sponsored

Kerri Walsh Jennings’s Playbook for the Future of Volleyball

The former gold medalist talks NCAA, the Olympics, & investing in volleyball.
Aug 25, 2026; San Francisco, California, USA; San Francisco Giants first baseman Rafael Devers (16) and San Francisco Giants center fielder Drew Gilbert (0) celebrate after scoring against the Cincinnati Reds during the first inning at Oracle Park.
Exclusive
August 26, 2026

Kalshi Incorrectly Claimed Deals With Giants, Braves Were Exclusive

The prediction-market platform says the mistake was an accident.
August 26, 2026

NFL Owners Unanimously Approve Seahawks Sale

The Khosla family’s deal was officially ratified Wednesday.
August 25, 2026

What’s Next for Jed York After Prostitution Arrest?

The NFL and 49ers could take action.
August 25, 2026

WNBA’s Sky Ban Kanter Freedom From Arena Indefinitely

Sky owner Michael Alter denounced the actions of the former NBA player.