Twinstake

Summary

Twinstake is a non-custodial institutional staking provider, formed in 2022 as a joint venture between Ethereum infrastructure firm Nethermind and WebN Group, a blockchain incubator backed by hedge-fund billionaire Alan Howard. It runs validators across multiple proof-of-stake networks for institutional clients, who retain custody of assets through third-party custodians. No regulatory actions, lawsuits, or confirmed security incidents involving Twinstake were found; the company's co-founder's WebN backer announced it was closing in February 2026, and a secondary on-chain source shows isolated validator slashing penalties on one smaller network that could not be independently corroborated.