Investment Stage

Focus Areas

About Investor

Nathan Stebbins is Senior Principal at Flagship Pioneering in Cambridge and also Co-Founder & Chief Strategy Officer of Expedition Medicines. He typically writes checks in the $500K–$15.0M range, with a sweet spot around $7.0M, focused on seed and Series A biotech and drug-delivery companies in the Boston / New England ecosystem. His role centers on conceiving and building first-in-class science companies within Flagship’s venture creation model and then helping scale them. He holds a Ph.D. in biological engineering from MIT, where his research spanned oncology, influenza and complex biologics, and he previously co-founded a cell-based therapeutics delivery startup and built biotech education programs at MIT.