Dumont family acquires majority shares of Dallas Mavericks

• The Dumont family has acquired Miriam Adelson's shares in the Dallas Mavericks.
• The Dumonts now hold a controlling interest in the franchise.
• Mark Cuban retains a 27% share and can sell an additional 20% to the Dumonts at the original $3.5 billion valuation.
• Cuban has expressed regret over selling the Mavericks to Adelson and the Dumonts.
• The Dumonts plan to gradually increase their ownership in the future.