Ethereum Foundation lawsuit alleges firing followed a 53-signature staff letter

Former employee Kayleen Fulton’s Ethereum Foundation lawsuit, filed on November 4, 2026, alleges she was unlawfully fired after organizing opposition to an internal mandate and disclosing a cancer diagnosis. Named as defendants in the complaint are the foundation itself, its Singapore-based affiliate, executive Bastian Aue, and Ethereum co-founder Vitalik Buterin. Key takeaways Fulton alleges wrongful termination, disability discrimination and interference with medical-leave rights. The complaint acknowledges management said the mandate’s seppuku language was not literal. A staff letter challenging mandate conditions collected 53 signatures. Ethereum Foundation lawsuit challenges dismissal Fulton filed her complaint in the U.S. District Court for the District of Colorado , challenging her dismissal on April 6, 2026. Known as “Nixo,” she previously led the foundation’s Protocol Support team and earned $195,000 in the role.

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