Siena Secondary Fund is a Tallinn-based secondary investor backing proven technology companies across Central and Eastern Europe and the Nordics. It targets minority secondary positions in later-stage startups with real revenue, product-market fit, and potential exits within roughly five years, generally fitting shareholders or venture-backed companies seeking liquidity rather than primary seed funding. Typical investment size is €1-5M. Portfolio companies include Bolt, Printify, Preply, Oura and Veriff.