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Inside Mark Cuban’s Maverick War Against the Adelsons

Cuban thought he was trading a stake in the Mavs for access to an even bigger prize: stadium-adjacent real estate development deal flow. A new legal filing suggests he may have gotten screwed out of the business where the actual money is getting made.

Mark Cuban
‘Mark Cuban sold a majority stake in the Dallas Mavericks in 2023.’ Photo: Tim Heitman / Getty Images
Eriq Gardner
July 27, 2026

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Everyone was surprised, even stunned, when Mark Cuban sold a majority stake in the Dallas Mavericks in 2023. Here was a billionaire who had turned a dot-com windfall and courtside obsession into a championship—and, in the process, transformed himself into one of the most recognizable faces in the National Basketball Association. Yet Cuban was relinquishing control, selling about 70 percent to casino billionaire Miriam Adelson and her son-in-law, Patrick Dumont, in a deal that valued the franchise at $3.5 billion.