Mark Cuban Faces Appeal in Voyager Crypto Lawsuit

Investors appeal a court ruling dismissing claims against Mark Cuban and the Dallas Mavericks over their promotion of the failed crypto broker Voyager.

The move marks a new phase in one of the longest-running legal battles stemming from the 2022 crypto crash. This development could have significant implications for the future liability of celebrities and sports organizations that promoted digital assets.

Plaintiffs are challenging Federal Judge Roy Altman’s December 2025 decision to dismiss the class-action lawsuit, as well as a subsequent ruling in May of this year that denied a motion to reopen the case. The appellate court must now determine whether the lawsuit should be remanded to a lower court for a trial on its merits.

According to the appellants, Mark Cuban and the Dallas Mavericks helped promote Voyager as a reliable investment platform during a period of aggressive customer acquisition. Shortly thereafter, the broker faced a liquidity crisis and filed for Chapter 11 bankruptcy protection, leaving thousands of investors with frozen funds.

The Jurisdictional Dispute

Crucially, the court has not yet dismissed the allegations on their merits. The late 2025 ruling was based entirely on procedural arguments regarding jurisdiction.

Judge Altman ruled that the plaintiffs failed to establish a sufficiently strong connection between the defendants’ alleged actions and the state of Florida, where the lawsuit was filed. Cuban’s defense argued that Voyager’s advertising campaigns and his public appearances were aimed at a national audience rather than specifically targeting Florida residents.

This procedural win allowed the defendants to avoid addressing more serious allegations, including claims that they facilitated the sale of unregistered securities and misled investors about the platform’s inherent risks.

This specific jurisdictional argument is now the focus of the appeal. Investors contend that the court applied an overly restrictive interpretation of jurisdictional rules and insist the case should proceed.

Cuban Remains Among the Last Active Defendants

The case is particularly notable because most celebrities originally named in similar Voyager-related lawsuits have already reached out-of-court settlements.

In 2024, several high-profile figures, including former NFL player Rob Gronkowski and basketball player Victor Oladipo, agreed to a settlement worth approximately $2.4 million without admitting any wrongdoing.

However, Mark Cuban and the Dallas Mavericks opted for a different strategy. Instead of settling, they have continued to contest the case through a series of procedural motions and requests for dismissal.

This approach has positioned Cuban as one of the most prominent figures still actively defending against allegations related to crypto endorsements from the market’s era of euphoria.

Potential Impact on the Crypto Industry

The outcome of this appeal could resonate far beyond the Voyager case. If the appellate court reverses the lower court’s decision, the case will return for a new hearing where the core allegations of misleading marketing and potential securities law violations could be analyzed for the first time.

Such a development would heighten the legal risks for celebrities, sports clubs, and companies that leverage their popularity to promote financial products and digital assets.

Conversely, if the dismissal is upheld, it would represent a major victory for Cuban and the Mavericks. Such a ruling might complicate future attempts to hold promotional partners accountable within the crypto industry.

Four years after Voyager’s collapse, the fallout continues to permeate courtrooms. The appellate court’s decision will be closely watched by investors and the wider crypto industry as it continues to grapple with the legacy of one of its most turbulent periods.