William Chisholm Wiki, Age, Wife, Net Worth, Family, STG, Celtics
William Chisholm Biography – William Chisholm Wiki
William Chisholm is the co-founder of Symphony Technology Group (STG), a private equity firm based in Menlo Park, California. He serves as the firm’s Managing Partner and Chief Investment Officer. He is set to be the new owner of the Boston Celtics.
At STG, Bill leads the firm’s investment activities and assumes a hands-on approach in the day-to-day management of STG companies, according to the company’s website. From strategic discussions to mining innovation opportunities, Bill acts as a sounding board on a variety of issues.
Bill has led many STG investments, including AFS Technologies (sold to Telus), Aldata (now SymphonyEYC), Cadmium, CAI Software, Capco (sold to FIS), CoreOne (sold to Markit), Dodge Construction Data, eProductivity Software, First Advantage (sold to Silver Lake Partners), IMI (merged with CDC Corp.), Intentia (merged with Lawson Software), GERS (sold to Ecometry/GGC), IRi (sold to New Mountain), JobRapido, Skyhigh Security and Trellix (from the combination of McAfee Enterprise and FireEye), MSC Software (sold to Hexagon), RSA, Symphony Services (merged with Teleca to become Symphony Teleca, sold to Harman), Symphony Talent, Symphony Marketing Solutions (sold to Genpact), Trace One, Ventiv (sold to Tailwind Capital), and Winshuttle (sold to Precisely).
Prior to co-founding STG, Bill co-founded The Valent Group and also worked at Bain & Company and PaineWebber, Inc., the latter of which was founded in Boston but acquired by Swiss bank UBS in 2000. Bain & Company, which is based in Boston, is also where Celtics minority owner Stephen Pagliuca used to work, according to WMTW News 8.
Bill graduated from Dartmouth College with a Bachelor of Arts degree and from The Wharton School at the University of Pennsylvania with an MBA with Distinction. He currently sits on the board of directors for Cadmium, CAI Software, Dodge, eProductivity Software, Jobrapido, RSA, Skyhigh Security, Symphony Talent, Trace One, and Trellix.
William Chisholm Age
William Chisholm was born in 1969 and grew up in Georgetown, Massachusetts. He is 56 years old, according to the Associated Press.
William Chisholm Wife
Massachusetts native William Chisholm is married to Kimberly Ford Chisholm.
William Chisholm Family
William Chisholm and his wife, Kimberly Ford Chisholm, have three children. Chisholm and Kim graduated from Dartmouth in New Hampshire in 1991; Bill played on the men’s soccer team from 1988-91. Their son, Will, also went to Dartmouth and also played on the men’s soccer team from 2016-19.
William Chisholm Net Worth
STG co-founder William Chisholm has an estimated net worth of $7.5 billion. STG has a portfolio that has consisted of more than 50 global companies and had $10 billion of assets under management as of March 2023.
Chisholm will buy the Boston Celtics at a $6.1 billion valuation, Boston Basketball Partners LLC announced on March 20, 2025. The sale price is the largest for a North American sports franchise, topping the $6.05 billion a group led by Josh Harris paid for the NFL’s Washington Commanders in 2023 and far surpassing the $4 billion valuation the Phoenix Suns got when Mat Ishbia bought the team in the same year, according to The New York Times.
In 2002, Chisholm co-founded Symphony Technology Group, based in Menlo Park, California, which specializes in tech investing — in particular data, software, and analytics companies. During his tenure, STG bought and combined tech companies McAfee Enterprise and FireEye to create the cybersecurity company Trellix in 2022. STG also acquired Survey Monkey-parent Momentive.
As of 2023, the company has raised nearly $10 billion across its private equity investment funds and has completed more than 100 investments. In 2023, STG closed on its seventh and largest fund, raising $4.2 billion.
William Chisholm Celtics
On March 20, 2025, Boston Basketball Partners LLC announced it has entered into a definitive agreement to sell the Boston Celtics to an investor group led by William Chisholm, a lifelong Celtics fan and Boston-area native, pending NBA Board of Governors approval. Wyc Grousbeck will continue in his roles of CEO and Governor, overseeing team operations, through the 2027-2028 NBA season.
If approved, the new ownership group will buy a majority of the team this summer at an initial valuation of $6.1 billion. In addition to Chisholm and Grousbeck, this group includes prominent Boston business executives and philanthropists Rob Hale (a current Celtics owner) and Bruce A. Beal, Jr., President of Related Companies, as well as Sixth Street, a global investment firm, among others.
“Growing up on the North Shore and attending college in New England, I have been a die-hard Celtics fan my entire life,” said Chisholm. “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.”
Chisholm continued, “My partners and I have immense respect for Wyc, the entire Grousbeck family and their indelible contributions to the Celtics organization over the last 23 years. We look forward to learning from Wyc and partnering with Brad Stevens, Joe Mazzulla and the talented team and staff to build upon their success as we work to bring more championships home to Boston.”
