Inside the Dumont Family's Climb to Control of the Dallas Mavericks
Three years after Mark Cuban sold his controlling stake, Patrick Dumont runs the Mavericks with an option to buy nearly all of what Cuban has left, and Cuban isn't happy about it.
When the NBA's Board of Governors signed off on Mark Cuban's sale of the Dallas Mavericks in December 2023, it ended 23 years of one of the league's most recognizable owners running the show. Nearly three years later, the family that replaced him is closer than ever to owning almost all of it, and the relationship with Cuban has gotten messier along the way.
How the Families Took Over
The buyers were Miriam Adelson, widow of casino magnate Sheldon Adelson, and her son-in-law Patrick Dumont, president and COO of Las Vegas Sands. The deal, valued at roughly $3.5 to $4 billion, gave the Adelson-Dumont group a controlling stake commonly put at close to 70% (some reports cited figures as high as 73%), with Cuban retaining 27%. Dumont took over as the team's governor, the first change at that position since Cuban bought the franchise from Ross Perot Jr. in 2000.
Cuban stayed on in a reduced role overseeing basketball operations and famously shrugged off the sale at the time, telling reporters, "Nothing's really changed except my bank account."
The Path to Even More Control
The sale agreement included a provision that could leave Cuban with almost nothing. The Adelson and Dumont families have the right to buy up to 20% more of Cuban's remaining stake, which would take their combined ownership into the 90s and reduce Cuban to as little as 7%. They have until December 2027 to exercise that option.
Whether they'll need that long is an open question. In February 2026, reports surfaced that an investor group was exploring a partnership with Cuban to help him buy back a controlling stake in the team he once ran. The Dumont and Adelson families pushed back hard, issuing a statement that "the team is not for sale" and that they "look forward to expanding their ownership stake over time."
A New Fight With Cuban
That tension resurfaced in July 2026, when Cuban publicly accused Dumont of freezing him out of a proposed Mavericks arena project. The team has an option agreement to buy roughly 104 acres in north Dallas, about 10 miles from downtown, with a new arena targeted to open in 2031, when the Mavericks' lease at the American Airlines Center expires. Cuban alleges his businesses were contractually entitled to participate in that opportunity and weren't given the chance.
Cuban also used the moment to air an older grievance: he says Dumont handed former general manager Nico Harrison full control of basketball decisions, despite an earlier understanding that Cuban would keep running that side of the operation, and that he wasn't told in advance about Harrison's shocking February 2025 trade of Luka Doncic to the Lakers. The Mavericks and Cuban both declined to comment further when the dispute became public.
What's Next
For now, the Dumont-Adelson group controls the franchise, the arena plan is moving forward, and Cuban remains a minority owner with a shrinking window to matter in major decisions. With the buyout option open until the end of 2027, the next chapter of Mavericks ownership may already be written, it just hasn't been signed yet.
For more on the fallout from the Doncic trade, see our look at the Knicks' and Grizzlies' opening week. Follow the rest of the league in our NBA coverage.
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Background from Wikipedia
Dallas Mavericks
The Dallas Mavericks, often referred to as the Mavs, are an American professional basketball team based in Dallas. The Mavericks compete in the National Basketball Association (NBA) as a member of the Southwest Division of the Western Conference. The team plays its home games at American Airlines Center, which it shares with the National Hockey League's Dallas Stars.
Throughout the 1980s, the Mavericks were a perennial playoff team, led by All-Stars Rolando Blackman and Mark Aguirre.
Text from Wikipedia, CC BY-SA 4.0
Frequently Asked Questions
Who owns the Dallas Mavericks now?
The Adelson and Dumont families hold the controlling stake in the Mavericks, close to 70% by most reports, after buying it from Mark Cuban in a deal the NBA approved in December 2023. Patrick Dumont, Miriam Adelson's son-in-law, is the team's governor.
How much of the Mavericks does Mark Cuban still own?
Cuban retained a 27% stake when he sold control in 2023. A provision in that sale lets the Adelson and Dumont families buy up to 20% more of his shares, which they have until December 2027 to exercise.
Is Mark Cuban trying to buy the Mavericks back?
Reports in early 2026 said an investor group was exploring helping Cuban regain control, which the Dumont and Adelson families publicly rejected, saying the team is not for sale.
What is Cuban's dispute with Patrick Dumont about?
In July 2026, Cuban accused Dumont of freezing him out of a proposed new Mavericks arena project in north Dallas and of giving former GM Nico Harrison unchecked control that led to the 2025 trade of Luka Doncic.
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