​DALLAS (AP) — Mark Cuban is accusing Dallas Mavericks governor Patrick Dumont of excluiring the club’s former majority owner from business opportunities as part of a proposed relocation from downtown, according to a report in the Dallas Morning News. The newspaper on Wednesday cited Cuban’s claim that Dumont has pursued “adversarial business practices” in his bid to move the team roughly 10 miles north to the former site of a Dallas mall. A Mavericks spokeswoman told The Associated Press that the team would not comment, and Cuban did not immediately respond to a request for comment.
Cuban, a billionaire who sold his majority stake in 2023 to the families of Miriam Adelson and Dumont — the latter being Adelson’s son-in-law — contends that he had an arrangement to continue overseeing basketball operations. He alleges that Dumont instead granted former general manager Nico Harrison full control of the basketball side. The News reported that Cuban said in a filing that he was unaware of Harrison’s plan to trade superstar Luka Doncic to the Los Angeles Lakers in February 2025 until it was too late to object and stop the deal.
The trade stunned the Mavericks and backfired, and Harrison was dismissed in November after the team got off to a slow start in the 2025-26 season. Cuban owns 27% of the Mavericks, but the paper noted there is a clause in the purchase agreement allowing the Adelson and Dumont families to acquire an additional 20% of Cuban’s stake. The filing by Cuban comes a little over a month after the Mavericks signed an option agreement to buy roughly 104 acres in north Dallas, a component of a plan to construct an arena that would open in 2031. The Mavericks’ lease at American Airlines Center runs through 2031, and the team has played downtown since it began as an expansion franchise in 1980.
Cuban asserts that his businesses are “contractually entitled to participate” in the move to the new site, which the filing describes as “a unique investment opportunity.”