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Billions quietly exchanged in major Mavericks ownership twist
Sivan and Patrick Dumont have taken control of the Dallas Mavericks after buying Miriam Adelson’s shares in October, bringing their family’s ownership to 69%. Patrick Dumont said the change reflects a long-term commitment to Dallas, including plans for a new arena and the aim of building a championship-winning team.
Adelson bought the majority stake from Mark Cuban in 2023, and Cuban still owns 27%; under that sale’s terms, Dumont can buy a further 20% from him at the original $3.5 billion valuation. A new arena is planned for the 2031-32 season, while the team rebuilds around rookie Cooper Flagg after trading Luka Doncic and finishing last season 26-56. Dallas began this season 4-3.
In short
- The Dumont family now holds 69% of the Mavericks.
- Mark Cuban retains a 27% stake.
- A new arena is planned for 2031-32.
Steelman: both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
The ownership change could bring patient investment and a clearer long-term plan, including a new arena and efforts to build a competitive team around young talent. Supporters may see the Dumonts’ increased stake as a way to provide continuity and the resources needed to restore the Mavericks’ success.
The case against
Concentrating control in the Dumont family could leave fans with less influence over major decisions, while the proposed arena and team rebuild carry financial and sporting risks. Critics may also question whether the change serves the club and its supporters, given the trade of Luka Doncic and the prospect of Cuban selling more of his stake at the original valuation.
Explained simply
The Dallas Mavericks are a professional basketball team in the NBA, the main men’s basketball league in the United States. The team is based in Dallas, Texas, and has won the NBA championship once, in 2011.
Miriam Adelson bought a majority stake in the team from businessman Mark Cuban in 2023. Her son-in-law Patrick Dumont and daughter Sivan are now the majority owners, while Cuban retains a 27% share; the original deal also gave Dumont the option to buy more of Cuban’s stake.
The owners oversee the club’s finances and long-term plans, while team managers make decisions about players. The Mavericks are rebuilding their squad, and a new arena is planned to open for the 2031–32 season, making the owners’ plans relevant to the team and its supporters.