John is Chief Scientific Officer of Sionna. He brings over 35 years of drug discovery experience, having made significant contributions at Pfizer, Astra Arcus, BMS, and, most recently at Sanofi, where he was the Global Head of Integrated Drug Discovery. John has led teams that have progressed more than 25 compounds into clinical development.
He is a co-inventor of numerous compounds that achieved clinical success and ultimate regulatory approval, and has contributed to over 560 publications, US-issued patents, and external presentations. John was awarded the 2009 Scarborough Award in Medicinal Chemistry, the 2014 Alfred Burger Award in Medicinal Chemistry, the 2019 Smissman Award, and the 2020 IUPAC-Richter Prize. He is an ACS Fellow (2011) and is an inductee in the MEDI Hall of Fame (2014). John obtained a B.S. from the University of Notre Dame and a Ph.D. from Princeton University, both in chemistry.