Mark Cuban Accuses Patrick Dumont Over Mavericks Relocation

Mark Cuban has filed a complaint accusing Patrick Dumont, the governor of the Dallas Mavericks, of deliberately sidelining him from business ventures tied to a possible move of the franchise. Cuban alleges that Dumont’s actions constitute “adversarial business practices” aimed at relocating the team roughly ten miles north of downtown Dallas to a vacant mall site. Both the Mavericks’ public relations team and Cuban’s representatives have declined to comment beyond the filing.

The Ownership Spectrum After the 2023 Sale

Cuban relinquished controlling interest in the Mavericks in 2023, selling to the families of Miriam Adelson and Patrick Dumont, who is Adelson’s son‑in‑law. Although he still holds a 27% stake, the purchase agreement includes a provision that lets the Adelson‑Dumont group acquire an extra 20% of his remaining shares. Cuban says his businesses were “contractually entitled to participate” in the new arena project, which he views as a unique investment chance.

The dispute also centers on basketball operations. Cuban maintains a verbal understanding that he would keep oversight of those matters, yet Dumont allegedly handed full authority to former general manager Nico Harrison. According to the filing, Cuban was unaware of Harrison’s plan to move superstar Luka Dončić to the Los Angeles Lakers until the deal was finalized in February 2025.

The Luka Dončić Trade Fallout

Harrison’s decision to send Dončić to Los Angeles backfired on the Mavericks. The team’s performance suffered, prompting a quick dismissal of Harrison in November after a slow start to the 2025‑26 campaign. The trade has become a focal point in the broader conflict between Cuban and Dumont, highlighting diverging philosophies on roster construction.

The relocation discussion adds another layer of tension. The Mavericks have secured an option to buy roughly 104 acres in north Dallas, setting the stage for a new arena slated to open in 2031. This site would replace the current American Airlines Center lease, which expires the same year, ending a downtown presence that dates back to the franchise’s 1980 expansion.

What the Conflict Means for the Mavericks’ Future

If the arena move materializes, Cuban’s involvement could become a pivotal factor in financing and branding the project. His claim of contractual rights suggests a potential legal battle that might delay or reshape the 2031 timeline. Meanwhile, the organization must navigate the aftermath of the Dončić trade and the loss of a former majority owner’s guidance.

Fan reaction is split. Some supporters view Cuban’s accusations as a power play after losing control, while others see them as a legitimate concern about minority‑owner rights. The outcome could set a precedent for how future sports franchise relocations are managed, especially when multiple ownership interests are involved.