Investor Brady Nessler filed a 48-page complaint against Coinbase in the U.S. District Court, alleging misleading investors about a data breach that was disclosed months after it occurred.
The data breach involved cybercriminals bribing customer support staff to steal user information, leading to a $20 million extortion attempt and a 7% drop in Coinbase stock.
Coinbase also faced a $4.5 million fine from the UK's FCA for breaching agreements by onboarding high-risk customers, which was not disclosed during the IPO, impacting the stock price.
The lawsuit includes Coinbase Global Inc., CEO Brian Armstrong, and CFO Alesia Haas as defendants, seeking compensatory damages for shareholders who acquired stock between April 14, 2021, and May 14, 2025.