Hsiao-Wei Wang resigned as co-executive director and board member of the Ethereum Foundation on Thursday, the second co-ED exit at the Switzerland-based nonprofit in four months. Her departure deepens a leadership turnover that has been running through the organization since the spring.

Wang announced the move in a post on X, saying a recent sabbatical "gave me space to reflect on my priorities and the kind of life I want to build next" and that the time had brought her to "the right moment for me to step back." She framed the decision around staying closer to home while remaining part of the broader Ethereum community. Board member Bastian Aue, who oversaw the leadership transition during Wang's sabbatical, has taken on a larger role guiding the organization in the interim.

Wang joined the foundation's research team in 2017 and was elevated to co-executive director in early 2025. Across roughly nine years she contributed to consensus and protocol-coordination work spanning the Beacon Chain, The Merge, Shapella and Dencun Co-founder Vitalik Buterin called the co-ED slot "perhaps the most challenging position in the Ethereum Foundation, at one of the most challenging times for Ethereum.”