In a significant victory for celebrity endorsers in the cryptocurrency space, a federal judge has dismissed a high-profile class-action lawsuit against billionaire Mark Cuban and the Dallas Mavericks. The suit accused them of misleading investors by promoting the now-bankrupt crypto platform Voyager Digital. On December 30, 2025, U.S. District Judge Roy K. Altman in the Southern District of Florida ruled that the court lacked personal jurisdiction over Cuban and the team, closing a case that had lingered for over three years.
The Partnership That Sparked Controversy
The story traces back to October 2021, at the peak of the crypto bull market. Voyager Digital, a crypto brokerage and lending platform, announced a five-year partnership with the Dallas Mavericks, making it the team’s official cryptocurrency partner. The deal included prominent branding at the American Airlines Center, on team jerseys, and in marketing campaigns.
Mark Cuban, the Mavericks’ then-majority owner and a vocal crypto enthusiast, personally endorsed the collaboration. At a press conference, he called Voyager “as close to risk-free as you’re gonna get in the crypto universe” and disclosed his own investment in the company. Fans were offered incentives: deposit $100 and trade $10 to receive $100 in Bitcoin. The promotion was wildly successful, temporarily overwhelming Voyager’s app with new users.
Voyager’s flagship product was its Earn Program Accounts, promising high yields—often in double digits—on deposited crypto, attracting millions of retail investors seeking better returns than traditional savings accounts.
The 2022 Crypto Winter and Voyager’s Collapse
The tide turned dramatically in 2022. The crypto market crash, ignited by the Terra-Luna collapse, exposed vulnerabilities across the industry. Voyager had loaned hundreds of millions—unsecured—to hedge fund Three Arrows Capital (3AC). When 3AC imploded, Voyager’s house of cards crumbled.
On July 1, 2022, Voyager froze withdrawals. Days later, it filed for Chapter 11 bankruptcy, leaving customers with billions in inaccessible assets. Many lost substantial portions of their savings in what plaintiffs later described as a Ponzi-like scheme reliant on new deposits to fund yields.
The Lawsuit: Claims of Fraud and Unregistered Securities
In August 2022, a class-action lawsuit was filed in Miami federal court by The Moskowitz Law Firm. It targeted Cuban, the Mavericks, and Voyager CEO Stephen Ehrlich, alleging they promoted unregistered securities (the Earn Program Accounts) and made misleading statements to lure inexperienced investors.
Key accusations:
- Cuban used his “Shark Tank” fame and Mavericks platform to portray Voyager as safe.
- Promotions violated state securities and consumer protection laws.
- Investors suffered collective losses exceeding $5 billion.
Other celebrity promoters, including Rob Gronkowski, settled for $2.4 million in 2024. Cuban, represented by Brown Rudnick LLP, refused to settle, fighting on multiple fronts including motions to dismiss and transfer venue.
The Dismissal: Jurisdiction Decides the Case
After extensive discovery and amended complaints, Judge Altman dismissed the case entirely on jurisdictional grounds. Nationwide marketing—via social media, televised games, and digital ads—did not establish sufficient ties to Florida, despite some plaintiffs residing there and economic harm felt in the state.
The ruling was without prejudice, allowing potential refiling elsewhere (e.g., Texas). However, Cuban’s attorney Stephen Best stated: “The plaintiffs have no recourse for refiling in the USDC-SDFL,” calling it the “absolute right result.”
As of December 31, 2025, no appeal or refiling has been reported.
Broader Implications for Crypto Endorsements
This dismissal comes amid ongoing regulatory scrutiny of crypto promotions. The SEC has pursued cases against celebrities like Kim Kardashian, while platforms like FTX faced similar fallout. Cuban’s win on jurisdiction offers relief to national endorsers, limiting “forum shopping” in plaintiff-friendly venues.
For Voyager victims, bankruptcy proceedings have enabled partial recoveries, but many losses remain permanent—a stark reminder of crypto’s risks.
Cuban, who sold his Mavericks majority stake in 2023 but remains involved, continues advocating for blockchain innovation while emphasizing caution. This case underscores a timeless investing lesson: celebrity endorsements, no matter how enthusiastic, are no substitute for personal due diligence.