Stephen L. Mayo, PhD

Stephen Mayo, Ph.D. has served as a member of our Board since November 2021. He also serves as a member of our research and development committee and audit committee.

Since March 2021, Dr. Mayo has served as a member of the board of directors and on the audit and research committees of Merck. Since July 2022, Dr. Mayo has served as a member of the board of directors and on the research and development committee of Allogene Therapeutics. In addition, he serves on the scientific advisory boards of Evozyne and Vida Ventures. He co-founded Molecular Simulations Inc. (now Biovia) and Xencor, a public antibody engineering company. Dr. Mayo is currently the Bren Professor of Biology and Chemistry and Merkin Institute Professor at California Institute of Technology (Caltech). He joined the Caltech faculty in 1992, was a Caltech-based Howard Hughes Medical Institute Investigator from 1994 to 2007, served as Vice Provost for Research from 2007 to 2010 and Chair of the Division of Biology and Biological Engineering from 2010 to 2020. Dr. Mayo was elected to the National Academy of Sciences in 2004 for his pioneering contributions in the field of protein design. He served as an elected board member for the American Association for the Advancement of Science from 2010 to 2014 and as a presidential appointee on the National Science Foundation’s National Science Board from 2013 to 2018.

Dr. Mayo holds a B.S. in Chemistry from Pennsylvania State University and a Ph.D. in Chemistry from Caltech. He completed postdoctoral work at both UC Berkeley and Stanford University School of Medicine in chemistry and biochemistry, respectively.