Sivan and Patrick Dumont bought out Miriam Adelson's shares last month, giving the family a 69 percent stake.
The Dallas Mavericks have new controlling owners. Sivan and Patrick Dumont purchased Miriam Adelson's shares of the franchise last month, a deal that pushes the Dumont family's stake to roughly 69 percent.
The move formalizes what had been a gradual shift in power atop the organization. Adelson's family had been the public face of Mavericks ownership since taking over from Mark Cuban, but the Dumonts have steadily increased their involvement, and this purchase makes their control official.
With nearly 70 percent of the team now in Dumont hands, the family holds decisive say over the franchise's direction, from front office decisions to the team's business operations. The Mavericks have not commented beyond confirming the ownership change, and it remains to be seen whether the new controlling owners will make any immediate changes to how the team is run.