Mavericks Owners Pursue Arena Relocation After Lease Expires; Cuban Retains 27% Stake

Mark Cuban is accusing Dallas Mavericks governor Patrick Dumont of freezing him out of business opportunities in a proposed arena relocation about 10 miles north of downtown Dallas. The Dallas Morning News reported Wednesday that Cuban alleges Dumont has engaged in adversarial business practices. The proposed site is the former location of a Dallas mall.

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. Cuban sold his majority stake in the team 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 gave former general manager Nico Harrison full control of the basketball side.

Cuban stated in the filing he was unaware of Harrison's plan to trade Luka Doncic to the Los Angeles Lakers until it was too late to object. The trade occurred in February 2025. Harrison was fired in November after the team's slow start to the 2025-26 season.

Cuban owns 27 percent of the Mavericks. The purchase agreement contains a clause allowing the Adelson and Dumont families to buy another 20 percent of his stake. The Mavericks signed an option agreement to purchase approximately 104 acres in north Dallas a little more than a month before the filing.

The planned arena would open in 2031, the same year the team's lease at American Airlines Center expires. The Mavericks have been located downtown since debuting as an expansion franchise in 1980. A Mavericks spokeswoman told The Associated Press the team would not comment on the allegations.

Cuban did not immediately respond to a request for comment.