David Buller is a seasoned healthtech entrepreneur turned venture capitalist, bringing a wealth of experience in business building, investment strategy, and deal flow to KELES. After scaling and exiting Avantec Healthcare, he transitioned into VC, backing over 200 companies across deep tech, AI, and digital health. As co-founder of Ascension Life Fund, he built a high-performing portfolio, including Aparito (acquired by Eli Lilly). In 2023, David and Laurent Van Lerberghe established KELES, analysing 3,000+ European startups before launching a firm dedicated to scaling Europe’s most promising digital health companies. KELES leverages David’s operational and investment expertise alongside Laurent’s global pharma experience to drive growth-stage success.