The deal is finally done. You can almost reminisce a Woj Bomb for news this big. Lifelong Boston Celtics fan and co-founder, managing partner, and chief investment officer of STG has just bought the Massachusetts franchise for a whopping $6.1 billion. This makes the most expensive sports franchise team sale in North American history.

The deal was announced by current owners Irving and Wyc Grousbeck as an agreement to buy the Greens in two stages, with the first one being valued at $6.1 billion. He’s finally completed his lifelong dream of owning a controlling interest in his boyhood club. We take a look at his background, net worth, business, and much more.

Who is William Chisholm?

Chisholm is a Georgetown, Massachusetts native. As previously mentioned, he is the co-founder and managing partner of Symphony Technology Group, a private equity firm. He previously worked for Boston-based Bain & Company after graduating from Dartmouth College and received his master’s from The Wharton School at the University of Pennsylvania.

Despite being the most popular man on Earth in the first couple of hours after the sale was announced, he likes to keep his personal life personal. The only fact known about him is the fact that he has two kids, and they’re both Massachusetts born and bred.

“I understand how important the Celtics are to the city of Boston – the role the team plays in the community is different than any other city in the country. I also understand that there is a responsibility as a leader of the organization to the people of Boston, and I am up for this challenge,” said Bill in the statement regarding the sale.

What is the STG?

Bill’s biggest achievement is probably the growth of his private equity investment firm, STG. According to their website, their singular mission pertains to building outstanding companies in the mid-market enterprise software and software-enabled technology services sector. Since it’s a private equity firm, they don’t really disclose their assets to determine their total valuation. But considering their massive portfolio, it’s safe to assume the number to be in the multi-billion dollar range.

Over the years, STG has gotten a reputation for its long-term, hands-on operational approach. Their strategy is built on a ‘buy-and-build’ basis, in which they buy companies, positively amplify their operations and positioning, and then choose to either reinvest in future growth or cautiously exit. But their biggest dub is the fact that they’re different to the rest- not due to their valuation portfolio- but more due to the fact that they don’t have a New York address, rather being based out of San Francisco.

Their portfolio includes more than 50 active and closed investments, with about $10 billion of assets under management, as of March 2023. Finally makes sense on where William picked the capital from.

William Chisholm continues to aspire the rest of the world. Other than being a billionaire, he’s just done what every sports fan has dreamed of doing- owning their favourite team. The Boston Celtics are already the most successful franchise in NBA history. Getting a fanatic like William Chisholm into the board will only propel their success hereon.