Mark Cuban Accuses Patrick Dumont of Excluding Him from Mavericks Arena Move

Mark Cuban accused Dallas Mavericks governor Patrick Dumont of freezing him out of business opportunities connected to a proposed move of the team about 10 miles north of downtown Dallas. The Dallas Morning News reported on July 8 that Cuban alleged Dumont engaged in adversarial business practices in the bid to relocate the club to the former site of a Dallas mall.

Cuban sold his majority stake in the Mavericks in 2023 to the families of Miriam Adelson and Dumont, who is Adelson's son-in-law.

He said he had an agreement to continue running basketball operations after the sale, but Dumont instead gave former general manager Nico Harrison full control of that side of the team. Cuban stated in a filing that he was unaware of Harrison's plan to trade Luka Doncic to the Los Angeles Lakers in February 2025 until it was too late to object.

Harrison was fired in November after the team's slow start to the 2025-26 season.

Cuban owns 27 percent of the Mavericks, and the purchase agreement includes a clause allowing the Adelson and Dumont families to buy another 20 percent of his stake. The filing followed the Mavericks' signing of an option agreement to purchase approximately 104 acres in north Dallas for an arena scheduled to open in 2031. The team's lease at American Airlines Center expires the same year.

The Mavericks have played downtown since debuting as an expansion franchise in 1980. Cuban said his businesses were contractually entitled to participate in the move to the new site, which the filing describes as a unique investment opportunity. A Mavericks spokeswoman and Cuban declined to comment to The Associated Press.