Mark Cuban withdraws lawsuit against Mavericks’ Dumont over arena plans

The legal flare-up between Dallas Mavericks minority owner Mark Cuban and team governor Patrick Dumont is over — at least for now.

Cuban’s lawyers withdrew the Rule 202 Petition earlier this week, which they filed in court in July. In that petition, they sought sworn testimony from a corporate representative from Arena Development Intermediate, a company the Mavericks formed in Delaware, as the franchise continues its push to develop a new basketball arena in the Dallas-Fort Worth Metroplex.

Cuban was originally seeking more information about Arena Development Intermediate’s corporate structure and other financial documents. Cuban claimed he was entitled to information that was withheld from him when the Mavericks entered into an option agreement earlier this summer to purchase a 104-acre tract at the former Valley View Mall site in North Dallas for a possible new arena.

“It defies belief that the Valley View Options are ‘purely exploratory,’” Cuban’s lawyers wrote in a notice of nonsuit that was filed Monday in the Texas Business Court. “But straining to trade a public hearing for a shroud of secrecy, Arena Development Intermediate, LLC finally revealed what it had concealed: its corporate structure, ultimate ownership, and affiliate status. ADI’s disclosure confirms it is working with … Patrick Dumont and its other associates to violate Petitioners’ rights.”

Judge Bill Whitehill of the Texas Business Court dismissed the motion “without prejudice” and cancelled the arbitration hearing involving Cuban’s Radical Hoops and Dumont’s ADI that was scheduled for Friday.

The back-and-forth between attorneys for Cuban and Dumont this summer was the latest in what’s been a messy transition in Mavericks ownership. Cuban sold his majority stake in the team to Dumont and his mother-in-law, Miriam Adelson, in December 2023. Cuban said he would maintain control of basketball operations after the sale. But when the franchise traded Luka Dončić to the Los Angeles Lakers in February 2025, it became clear that Dumont had handed control of the team’s front office over to former general manager Nico Harrison.

In March, Cuban said on a podcast that he regretted selling the team to Dumont and Adelson.

“I don’t regret selling,” Cuban said. “I regret who I sold to. I made a lot of mistakes in the process, and I’ll leave it at that.”

The Mavericks’ lease at American Airlines Center expires in 2031, and the team wants to move into a new arena ahead of the 2031-32 season. The option agreements in place for the Mavericks to purchase land at the former Valley View Mall site indicate the team has significant interest in building its new home in North Dallas. But it is not a foregone conclusion that the Mavericks will wind up there, Dumont’s lawyers said.

“Mr. Cuban has demanded that be involved in the option process,” Dumont’s lawyers wrote in a July 31 court filing. “Because of the nature of the Valley View Option, there is no current business opportunity to present to Mr. Cuban or the Petitioners. This fact has been communicated to Mr. Cuban.”