Josh Stark, a key researcher and challenge supervisor on the Ethereum Basis, the non-profit group that stewards improvement of the Ethereum ecosystem, mentioned Thursday that he’s departing the group after 5 years.
Stark didn’t present a selected purpose for his departure and mentioned in a submit on X that he has “no plans for the longer term.” As an alternative, he’ll take some private time to deal with household and mates. He mentioned:
“The Ethereum ecosystem has reliably finished issues the world informed us have been unattainable. It’s simple to neglect how a lot actual concern and doubt there was that Ethereum would by no means launch, that decentralized finance (DeFi) would by no means work, or that Proof of Stake would by no means ship.”
He’s certainly one of 4 folks listed as “Administration” on an organizational chart which exhibits almost all the Basis’s employees reporting in. Cointelegraph reached out to Stark about his departure, however didn’t obtain a response by the point of publication.
The departure of Stark from the Ethereum Basis represents essentially the most high-profile exit from the group since Ethereum co-founder Vitalik Buterin introduced sweeping management modifications and a brand new course for the Basis in 2025. A day earlier, one other Basis contributor, Trent Van Epps, introduced that he resigned final week.
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The Ethereum Basis received a shakeup in 2025
In January 2025, co-founder Vitalik Buterin introduced sweeping modifications to the Ethereum Basis in response to rising criticism from the Ethereum group over the long-term course of the ecosystem.
Bringing in “recent” expertise to the group, better decentralization and growing the protocol for sooner transaction throughput and elevated transaction speeds have been amongst a number of the objectives Buterin listed for the modifications.
Nevertheless, the revamped Ethereum Basis wouldn’t interact in ideological disputes, foyer US lawmakers in Washington or symbolize “vested pursuits,” Buterin added.
“This stuff aren’t what EF does, and this is not going to vary. Individuals searching for a special imaginative and prescient are welcome to begin their very own orgs,” he mentioned.

The Ethereum Basis formally introduced new management in March 2025, including Hsiao-Wei Wang, an Ethereum Basis researcher, and Tomasz Stańczak, CEO of Nethermind, an Ethereum execution shopper, as co-directors of the group.
Stańczak stepped down from his position in February 2026, whereas Wang stays a member of the Ethereum Basis’s administration board, in accordance with its organizational chart.
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