STEPHEN L. MAYO, PH.D.

Corporate Board Profile

Tech Score: 17/100

Software Technology Evidence

1 mention(s) identify STEPHEN L. MAYO, PH.D. as having software/technology expertise.

Company	Filing Date	Evidence	Reason
Merck & Co., Inc.	2022-04-04	Dr. Mayo has extensive scientific experience relevant to the biopharmaceutical industry.	Dr. Mayo has extensive scientific experience and has overseen technology licensing, indicating familiarity with technical aspects of scientific research.

Merck & Co., Inc.

Filing Date	Source Excerpt
2021-04-05	Dr. Mayo has extensive scientific experience relevant to the biopharmaceutical industry, including being the Bren Professor of Biology and Chemistry and former Chair of the Division of Biology and Biological Engineering at the California Institute of Technology (Caltech) and co-founder of Xencor, a public antibody engineering company. In addition, in his role as the former Vice Provost at Caltech, Dr. Mayo oversaw Caltech’s technology licensing program. Elected to the National Academy of Sciences in 2004 for his pioneering contributions in the field of protein design, Dr. Mayo has also served as a presidential appointee on the National Science Foundation’s National Science Board and as an elected board member for the American Association for the Advancement of Science.
2022-04-04	Dr. Mayo has extensive scientific experience relevant to the biopharmaceutical industry.
2023-04-03	Dr. Mayo has extensive scientific experience relevant to the biopharmaceutical industry, including being the Bren Professor of Biology and Chemistry, Merkin Institute Professor and former Chair of the Division of Biology and Biological Engineering at the California Institute of Technology (“Caltech”) and co-founder of Xencor, a public antibody engineering company. In addition, in his role as the former Vice Provost at Caltech, Dr. Mayo oversaw Caltech’s technology licensing program. Elected to the National Academy of Sciences in 2004 for his pioneering contributions in the field of protein design, Dr. Mayo has also served as a presidential appointee on the National Science Foundation’s National Science Board and as an elected board member for the American Association for the Advancement of Science. Dr. Mayo also serves as a member of the board of directors of Sarepta Therapeutics, Inc and Allogene Therapeutics, Inc.
2024-04-11	Dr. Mayo has extensive scientific experience relevant to the biopharmaceutical industry, including being the Bren Professor of Biology and Chemistry, Merkin Institute Professor and former Chair of the Division of Biology and Biological Engineering at the California Institute of Technology (“Caltech”) and co-founder of Xencor, a public antibody engineering company. In addition, in his role as the former Vice Provost at Caltech, Dr. Mayo oversaw Caltech’s technology licensing program. Elected to the National Academy of Sciences in 2004 for his pioneering contributions in the field of protein design, Dr. Mayo has also served as a presidential appointee on the National Science Foundation’s National Science Board and as an elected board member for the American Association for the Advancement of Science. Dr. Mayo also serves as a member of the board of directors of Sarepta Therapeutics, Inc and Allogene Therapeutics, Inc.

Sarepta Therapeutics, Inc.

Filing Date	Source Excerpt
2022-04-25	Stephen L. 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.
2023-04-24	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 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. Our nominating and corporate governance committee believes that Dr. Mayo’s experience serving in leadership roles in various scientific and biotechnology institutions and companies qualifies him to serve as a member of our Board.

Filing Date

Source Excerpt

2022-04-25

Stephen L. 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.

2023-04-24

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 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. Our nominating and corporate governance committee believes that Dr. Mayo’s experience serving in leadership roles in various scientific and biotechnology institutions and companies qualifies him to serve as a member of our Board.

Data sourced from SEC filings. Last updated: 2026-02-03