The Dumonts now own the Mavericks’ controlling stake

What changed

The Mavericks’ controlling interest now sits directly with Patrick Dumont and Sivan Ochshorn. The couple purchased Miriam Adelson’s shares last month, and the franchise confirmed Tuesday that the Dumont family now owns 69 percent of the team.

Mark Cuban retains a 27 percent minority stake, while original shareholder Mary Stanton owns the remaining 4 percent. The 2023 sale agreement also gives Dumont an option to purchase another 20 percent from Cuban at the original $3.5 billion valuation; Dumont told ESPN that the family plans to consider that over time.

The practical direction is already visible. Dumont has served as the Mavericks’ governor since the families bought control in 2023, and he is closely involved in the proposed arena and entertainment district at the former Valley View Mall site. The franchise is targeting 2031 for a new basketball-focused home.

Interpretation: this is more a consolidation of authority than a sudden basketball-operations reset. Dumont was already the visible decision-maker, and Masai Ujiri still runs the team side. What changes is the clarity: arena planning, business investment and any future reduction of Cuban’s stake now sit more plainly under one family’s control.