Kostis Tselenis

Managing Partner - Swiss Impact Office | Board Chair - Hellenic Impact Investing Network

Kostis is a pioneering investor and thought leader who has helped shape the sustainability and impact investing landscape in Europe. Over the past two decades, he has managed large-scale portfolios across direct investments and funds, spanning venture capital, private equity and project finance, with a focus on energy and food transition, climatech, circular and blue economy, nature finance, and access to finance.

He is Managing Partner of the Swiss Impact Office, a Zurich-based multi-family office and OCIO boutique allocating private and institutional capital into financially performing portfolios aligned with environmental and social goals. Drawing on his investment background and early exposure to entrepreneurship through his family business, he brings a family capital perspective to long-term value creation and impact.

Kostis founded and chairs the Hellenic Impact Investing Network, Greece’s official National Platform. A frequent speaker and university lecturer, he holds a Master’s degree magna cum laude in Economics and Finance from the University of Zurich.