Widmann serves as head of strategy at Komainu, an institutional digital asset custody business aiming to enable secure and compliant access to the growing ecosystem. He was part of the founding team that launched the Komainu joint venture with Nomura, Ledger and CoinShares in 2018 and since then has helped the business raise $25 million and reach more than $8 billion in assets under custody. Prior to Komainu, Widmann helped launch Nomura's digital asset team and led several strategic initiatives and investments for the Japanese investment bank.