David Greenwood

Chairman of the Board of Directors

David Greenwood joined our Board in April 2019 and was appointed as chairman in April 2021. Mr. Greenwood brings to CohBar more than 40 years of financial and operational experience in biotechnology and investment banking. From December 2010 until its recent merger with Gurnet Point Capital in November 2018, he served on the Board of Directors of Corium International, Inc. (formerly NASDAQ: CORI), a leading biopharmaceutical company developing and commercializing transdermal healthcare products. During his tenure as Executive Chairman from June 2012 to December 2016, and Chairman beginning in 2016, Mr. Greenwood most notably led the company through a successful IPO and helped raised substantial capital in the equity and debt markets.

From 1995 through December 2011, Mr. Greenwood served in a number of executive and leadership roles, including Chief Financial Officer, President, Chief Executive Officer and Director at Geron Corporation, a biotechnology company focused on regenerative medicine and cancer. Previously, he served as Chairman of both Geron Bio-Med Limited, and TA Therapeutics, Ltd., while also serving on the Boards of ViaGen, Inc., Clone International, Parnell Pharmaceuticals Holdings Ltd and Pacific Lutheran University. He currently serves on the boards of several private companies in the biopharma and medical device fields. Early in his career, from 1979 to 1995, Mr. Greenwood held various positions at the investment bank J.P. Morgan Chase & Co., where he focused on corporate finance and mergers and acquisitions. Mr. Greenwood received his bachelor's degree from Pacific Lutheran University and his M.B.A. from Harvard Business School.

Nir Barzilai, M.D.

Founder and Director

Dr. Barzilai co-founded our Company in 2007 and has served as a member of our board of directors since our conversion to a Delaware corporation in 2009. Dr. Barzilai is the director of the Institute for Aging Research at the Albert Einstein College of Medicine of Yeshiva University, where he also holds the Ingeborg and Ira Leon Rennert Chair of Aging Research, is a professor in the Departments of Medicine and Genetics and a member of the Diabetes Research Center. Dr. Barzilai is also director of the Paul F. Glenn Center for the Biology of Human Aging Research and of the National Institutes of Health’s (NIH) Nathan Shock Centers of Excellence in the Basic Biology of Aging. Dr. Barzilai has received numerous awards, including the Beeson Fellow for Aging Research, the Ellison Medical Foundation Senior Scholar in Aging Award, the Paul F. Glenn Foundation Award, the NIA Nathan Shock Award, and the 2010 Irving S. Wright Award of Distinction in Aging Research. Dr. Barzilai is the Director of the Institute for Aging research at Albert Einstein College of Medicine, under the auspices of which he is the principal investigator of the largest of five Nathan Shock Centers of Excellence in Biology of Aging and the Glenn Center for the Biology of Human Aging.

Pinchas Cohen, M.D.

Founder and Director

Dr. Cohen co-founded our Company in 2007 and has served as a member of our board of directors since our conversion to a Delaware corporation in 2009. He served as our President from 2009 until 2013. Since April 2012, Dr. Cohen has served as dean of the Davis School of Gerontology at the University of Southern California. He holds the William and Sylvia Kugel Dean’s Chair in Gerontology and acts as executive director of the Ethel Percy Andrus Gerontology Center. Dr. Cohen was affiliated with the University of California, Los Angeles School of Medicine, where he was a member of the faculty until 2012. At the UCLA Mattel Children’s Hospital Dr. Cohen served as director of endocrine/diabetes research and training (from 1999 until 2012), chief of endocrinology and diabetes (from 2001 until 2012) and as vice chair of research (from 2011 until 2012). Dr. Cohen was also co-director of the UCSD-UCLA Diabetes and Endocrinology Research Center from 2007 until 2012. Dr. Cohen has received several awards for his work in the field of aging, including a National Institute of Aging EUREKA Award, the National Institutes of Health Director’s Transformative Research Award and the Glenn Award for Research in Biological Mechanisms of Aging. He serves on the boards of several professional journals and societies, including the American Federation for Aging Research and the Growth Hormone Research Society.

John M. Amatruda, M.D.


Dr. Amatruda, a CohBar co-founder, has over 28 years of experience as a senior pharmaceutical research executive and scientific consultant, together with 50 years of experience in the practice and teaching of medicine. He has been a consultant and scientific advisor to more than 20 biotechnology and leading pharmaceutical companies and has been on the Board of 4 biotechnology companies since 2009. As Senior Vice President and Franchise Head for Diabetes and Obesity at Merck Research Laboratories until 2009, Dr. Amatruda had end-to-end responsibility for drug compounds from target discovery to patent expiration, including basic research, experimental medicine, clinical development, external alliances and licensing. Prior to being named Franchise Head, Dr. Amatruda led drug development groups at Merck for diabetes, obesity, atherosclerosis and cardiovascular disease. Under his leadership, the development program and regulatory approvals of Januvia™ and Janumet™ - the first compounds in the important class of DPP-IV inhibitors for Type 2 diabetes, and two of Merck's leading revenue-generating drugs - were successfully initiated and completed, and worldwide submissions for Vytorin™, Januvia™ and Janumet™ were filed. Prior to joining Merck, Dr. Amatruda was Vice President and Therapeutic Area Head for Metabolic Disorders Research at Bayer Corporation for ten years, where he assisted in the approval of Acarbose, and led the discovery and advancement of several compounds into clinical development. Dr. Amatruda has also had a successful career in academic medicine, formerly as a Professor of Medicine at the University of Rochester School of Medicine, where he was head of the Clinical Research Center and a Principal Investigator on several NIH funded research projects; and currently as an Adjunct Professor of Medicine at Yale University School of Medicine. He continues to see patients in a teaching capacity. In addition, Dr. Amatruda has co-authored over 160 publications, many of which have been published in leading peer-reviewed journals, and has served as a reviewer for several journals. Dr. Amatruda was educated at Yale University and The Medical College of Wisconsin, and completed his internship and residency in internal medicine and fellowship in endocrinology and metabolism at The Johns Hopkins Hospital.

Albion J. Fitzgerald


Albion J. Fitzgerald has served as a member of our board of directors since May 2014 and as Chairman from July 2014 to April 2021. Mr. Fitzgerald previously served as chief executive officer and chairman of the board of directors of ManageIQ, Inc., a provider of global cloud IT systems management solutions. Mr. Fitzgerald was appointed as a director of ManageIQ in 2007, and served as strategic consultant to the Company from 2007 until April 2012, and as chief executive officer and chairman of the board of directors from April 2012 until ManageIQ, Inc. was acquired by Red Hat, Inc. in December 2012. In 1992 Mr. Fitzgerald co-founded Novadigm, Inc. (NASDAQ: NVDM), an international provider of IT systems management solutions to Fortune 500 companies and government agencies with customers in 26 countries. He served as its chairman and chief technology officer from 1992 and chief executive officer from 1995 until its acquisition by Hewlett Packard in 2004. Prior to Novadigm, Mr. Fitzgerald founded and served as chief executive officer of Telemetrix, Inc., a provider of enterprise IT systems and network management solutions. From 1980 to 1989, Mr. Fitzgerald was a strategic technology consultant to New York University responsible for architecting, building and managing the university’s computer center and campus-wide multi-media network. Mr. Fitzgerald began his technology career at IBM in 1966.

Phyllis Gardner, M.D.


Dr. Gardner was appointed to the Board in February 2019. Dr. Gardner has over 35 years of experience in the medical industry and academia. Dr. Gardner is currently a tenured professor at the School of Medicine at Stanford University, where she has served in various positions since 1984, and is a member of the board of directors of the Harvard Medical School of Fellows and Advisory Council on Education. Dr. Gardner has served as a director of Revance Therapeutics, Inc. (NASDAQ: RVNC), a biotechnology company, since December 2008, and previously served on the board of directors of Corium International, Inc., a biopharmaceutical company formerly listed on NASDAQ, from November 2007 to November 2018. From September 2014 to September 2015, Dr. Gardner served as a director of Parnell Pharmaceuticals Holdings Ltd. (OTCMKTS: PARNF). From 1999 to 2014, Dr. Gardner served as an adjunct partner, then partner at Essex Woodlands Health Ventures, a healthcare growth equity and venture capital firm. She also served as an independent director of various biopharmaceutical companies from 1998 to 2005. Dr. Gardner’s research has centered on cardiac arrhythmias, ion channel biophysiology, cell biology, cystic fibrosis pathogenesis, gene therapy and diagnosis, and her clinical work has concentrated on medicine and cardiology. Dr. Gardner received her bachelor’s degree in biology from the University of Illinois and her M.D. from Harvard Medical School.

Carol Nast


Ms. Nast has served on our board since August 2021. Ms. Nast has spent her career in executive level positions with both large multinational companies and early-stage companies in the medical industry. Most recently, Ms. Nast served as Chief Operating Officer at MindMed, a biotech company developing psychedelic-inspired therapies. She is a recognized expert in product development and commercialization and has extensive experience in the management of complex, multinational partner programs and has played a critical role in the development and commercialization of over 100 products. Previously, Ms. Nast was COO at NuGen, a genomics company, and served in executive level positions at Inhale Therapeutics (Nektar), Syva (a division of Syntex Pharmaceuticals,) BioRad and Pfizer.

Misha Petkevich


Mr. Petkevich has more than 30 years of financial and investment experience in biotechnology and investment banking. Since 2015, Mr. Petkevich has been the Chief Investment Officer of V2M Capital, an investment firm funding life science companies. He currently serves on the board of directors of HingeBio, Inc., a biotechnology company developing bispecific and multispecific antibodies.  In 2005, he co-founded BladeRock Capital, LLC, an investment firm specializing in life science companies. Prior to founding BladeRock Capital, Mr. Petkevich founded The Petkevich Group, a biotechnology advisory firm, where he was Chairman and Chief Executive Officer from 1998 to 2005. Between 1989 and 1997, Mr. Petkevich served as Managing Director, as well as Head of Healthcare and Investment Banking at Robertson Stephens & Co.  Mr. Petkevich began his career at Hambrecht & Quist, an investment bank, where he served as a Principal, Head of Healthcare Banking and as a biotechnology analyst covering Genentech, Chiron and others. Mr. Petkevich received his bachelor’s degree from Harvard University and his DPhil from the University of Oxford. 

Joseph J. Sarret, M.D., J.D.

Chief Executive Officer and Director

Joseph J. Sarret joined CohBar as Chief Executive Officer and Director in May 2021.  From 2019 until 2021, Dr. Sarret worked as a consultant in the life science industry, focusing on business development and corporate development activities.  From 2015 until 2019, he served as Chief Business Officer at Corium International, Inc. (formerly NASDAQ: CORI), a biopharmaceutical company developing and commercializing transdermal healthcare products.  Prior to Corium, Dr. Sarret served in senior leadership roles at Solazyme, Inc. (formerly NASDAQ: SZYM) and Sevident, Inc.  From 2005 to 2012, he held several executive management roles, most recently serving as Chief Business Officer at Codexis, Inc. (NASDAQ: CDXS), a publicly traded life sciences company developing novel enzymes for a variety of applications.  Earlier in his career, Dr. Sarret worked as a practicing clinician focused on patients with human immunodeficiency virus and an attorney specializing in IP transactional work in the life sciences industry.  He received a B.A. in human biology from Stanford University, an M.D. from the University of California, San Francisco School of Medicine and a J.D. from Stanford Law School.

Joanne Yun, Ph.D.


Dr. Yun has served on our board since September 2021. Dr. Yun is a partner at Egon Zehnder, one of the world’s preeminent leadership advisory firms and is currently a member of the firm’s Health Practice. In addition to her board and executive leadership work for global pharmaceutical and biotechnology companies, Dr. Yun leads the Research & Development segment of Egon Zehnder’s Health Practice. Prior to joining Egon Zehnder, Dr. Yun was a Director in the Global Oncology Business Unit for Bayer HealthCare Pharmaceuticals with responsibility for oncology program management and new product planning. She has advised on all aspects of research, development, and commercial strategies, including portfolio prioritization, business development, alliance governance, and merger integration. Dr. Yun started her career with Bayer AG as a Bench Chemist and Laboratory Head in the Organic Synthesis Department of Bayer’s Central Research Division in Leverkusen, Germany. She later transitioned into the Corporate Research & Development Planning Department for the Bayer AG Board of Management and then joined theStrategic Planning Department for the Pharmaceuticals Division, where she focused on global merger & acquisition strategies and transactions. Dr. Yun subsequently transferred to Bayer’s North America Business Development & Licensing group. Dr. Yun earned a bachelor’s degree in chemistry and French from Amherst College and a Ph.D. in chemistry from the Massachusetts Institute of Technology. She was a National Institutes of Health (NIH) Postdoctoral Fellow at The Scripps Research Institute and is a member of the American Society of Clinical Oncology, the American Society of Hematology, and the American Chemical Society.