In 2002, Wyc Grousbeck paid $360 million for the Boston Celtics; in 2025, he sold it in a deal valuing the team at $6.1 billion Nov 1, 2026 @ 3:16pmBasketball > NBA > Boston CelticsAthlon SportsHow Wyc Grousbeck's Celtics ownership led to a record-setting sale. Read moreIn 2002, Wyc Grousbeck paid $360 million for the Boston Celtics; in 2025, he sold it in a deal valuing the team at $6.1 billion