---
title: "Former Ethereum Foundation Official Sues EF and Vitalik Buterin, Alleging Retaliatory Firing Over Mandate Dispute"
url: https://thecoingazette.com/former-ethereum-foundation-official-sues-ef-and-vitalik-buterin-alleging-retaliatory-firing-over-mandate-dispute/
date: 2026-11-09
modified: 2026-11-09
lang: en
author: "Coin Gazette Editorial"
description: "According to a complaint filed in the U.S. District Court for Colorado on November 4, former Ethereu..."
categories:
  - "Crypto News"
tags:
  - "crypto"
  - "cryptocurrencies"
  - "Defi"
  - "Market Trends"
  - "News"
word_count: 102
---

# Former Ethereum Foundation Official Sues EF and Vitalik Buterin, Alleging Retaliatory Firing Over Mandate Dispute

According to a complaint filed in the U.S. District Court for Colorado on November 4, former Ethereum Foundation Protocol Support lead Kayleen Fulton (Nixo) sued six defendants, including Ethereum Foundation entities and co-founder Vitalik Buterin, alleging retaliatory termination and disability discrimination. Fulton claims she was fired on April 6 after disclosing an ovarian cancer diagnosis and helping organize a letter signed by 53 employees opposing mandatory endorsement of the Ethereum Foundation Mandate. The complaint also cites a recorded conversation in which Buterin allegedly expressed concern that employees could influence organizational decisions by creating controversy. The allegations have not been established in court.