Kostis Tselenis

Kostis Tselenis is a pioneering investor who has helped shape the sustainability and impact investing landscape in Europe. In the last 20 years, he has managed large-scale portfolios across direct investments and funds, spanning venture capital, private equity, and project finance. He has addressed major impact themes, including energy transition, the circular economy, nature finance, and access to finance, in both developed and developing countries. His track record includes leadership roles in pioneering financial institutions and investment platforms. He is the Managing Partner of the Swiss Impact Office, an investment manager and multi-family office based in Zurich, allocating private and institutional capital into financially performing portfolios aligned with environmental and social goals. Kostis also founded and chairs the Hellenic Impact Investing Network HIIN, Greece’s official National Platform, which has played a catalytic role in building the regional ecosystem. HIIN’s mission is to mobilise capital for sustainability and social impact, with financial innovation, education and awareness.

A frequent speaker at international conferences, he has also lectured at leading universities across Europe and authored articles and publications. He holds a Master’s in Economics and Finance from the University of Zurich and was inspired to follow the sustainability path through early involvement in his family’s business, a pioneer in sustainable and ethical cosmetics.