Dallas Mavericks ownership has officially shifted to Patrick Dumont and his wife, Sivan Ochshorn, after the couple purchased Miriam Adelson’s shares and secured a controlling 69% stake in the NBA franchise. The transaction, completed in October 2026, puts the husband and wife firmly in charge of one of basketball’s most recognizable organizations.
The ownership change was confirmed on November 3, marking another major development for the Mavericks nearly three years after billionaire Mark Cuban sold his majority interest in the team.
Adelson, a billionaire businesswoman whose family controls the Las Vegas Sands casino empire, originally acquired the Mavericks alongside her daughter, Ochshorn, and son-in-law, Dumont, in December 2023. That transaction valued the franchise at approximately $3.5 billion.
Although Adelson held a significant ownership position, Dumont had already become the organization’s primary decision-maker. As team governor, he represented Dallas at NBA Board of Governors meetings and helped oversee major basketball and business decisions.
The Dumont family expressed confidence in the franchise’s future following the latest purchase.
“We are deeply committed to building a championship team, supporting our fans and growing the organization’s impact in the local community through our investments in the city of Dallas,” the Dumont family said in a prepared statement. “We are very happy with our family ownership and could not be more excited about the future of the Mavericks.”
Under the updated Dallas Mavericks ownership structure, Cuban retains 27% of the franchise, while Mary Stanton, the widow of an original team shareholder, holds the remaining 4%.
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However, Dumont could eventually increase his ownership even further. The original 2023 agreement reportedly gives him the option to purchase another 20% stake from Cuban using the franchise’s previous $3.5 billion valuation.
If that transaction happens, the Dumont family’s ownership could climb to 89%, leaving Cuban with just 7%.
The latest purchase also comes after a turbulent period for the franchise.
One of the most controversial decisions under Dumont’s leadership involved the February 2025 trade that sent superstar Luka Dončić to the Los Angeles Lakers. The blockbuster move stunned fans and dramatically changed the Mavericks’ direction.
Dumont approved the trade, which became a major source of frustration among supporters. The fallout eventually contributed to the dismissal of former general manager Nico Harrison, whose decision to move Dončić generated widespread backlash.
Dallas Mavericks ownership has since focused on rebuilding the organization through changes in basketball leadership, player development and long-term planning.
The franchise hired former Toronto Raptors executive Masai Ujiri as team president and alternate governor in May 2026. Ujiri, who helped construct Toronto’s 2019 NBA championship roster, now oversees the Mavericks’ basketball operations.
Mike Schmitz was subsequently appointed general manager, while Dusty May took over as head coach.
Much of the team’s future now centers on Cooper Flagg, the No. 1 overall selection in the 2025 NBA Draft. Flagg earned Rookie of the Year honors in 2026 and has emerged as a central figure in Dallas’ rebuilding efforts.
Away from the basketball court, Dumont is preparing for another enormous investment.
The Mavericks are pursuing plans for a basketball-focused arena and surrounding entertainment district at the former Valley View Mall property in North Dallas.
The proposed development is targeting a 2031 opening, coinciding with the expiration of the team’s current lease at American Airlines Center.
For Dallas Mavericks ownership, the proposed arena would represent a major opportunity to expand the franchise’s business operations while establishing a new home for future generations of fans.
Dumont brings extensive experience in large-scale entertainment developments through his leadership at Las Vegas Sands, where he serves as chairman and chief executive officer.
He has also overseen significant changes within the Mavericks’ business operations. Rick Welts, who joined as CEO in 2025, is scheduled to retire at the end of December 2026. Team president Ethan Casson will assume the CEO position on January 1, 2027.
With 69% ownership secured, a revamped basketball operation and a proposed new arena in development, Patrick Dumont and Sivan Ochshorn now have even greater financial control over the Dallas Mavericks’ future.
