Executive Leadership


 Geoff Green Paul Lehr Lisa McClain Moss


International Executive Director

Senior Director, Manufacturing     

Geoff Green has been with Longeveron since 2016, previously as SVP of Clinical Operations.  Mr. Green is a versatile executive with over 20 years of experience in leadership roles in the life sciences industry.  His background spans clinical drug development, clinical operations, and business and corporate development.  He has held the positions of VP of Operations at Partikula, VP of Business Development & Clinical Affairs at Accu-Break Pharmaceuticals, Acting President and CEO of DOR BioPharma, VP of Business Development & Operations at Heart Genomics, and Director of Clinical Affairs at IDDS.  Mr. Green earned a BA in biology from Kenyon College, and an MBA from Barry University’s Andreas School of Business. Paul Lehr leads Longeverons’s international efforts and programs. He earned his BA from Brown University, and his JD from University of Florida College of Law. Over the past 20 years, Mr. Lehr has held senior legal and executive positions in corporate as well as educational and not-for-profit settings. Lisa McClain-Moss joined Longeveron in 2017 to lead the Company’s cell manufacturing and product development.  She has held previous leadership positions at Cognate BioServices and St. Jude’s Children Research Hospital.

Joshua M. Hare, M.D.  Anthony Oliva, Ph.D. James Clavijo

Chief Science Officer (Consultant)

Senior Scientist

Chief Financial Officer

Dr. Joshua Hare co-founded Longeveron in 2014 utilizing intellectual property and technology exclusively licensed from the University of Miami, where he is also the founding Director of the university’s Interdisciplinary Stem Cell Institute (ISCI).

Anthony Oliva, Ph.D. joined Longeveron in 2015 as the company’s senior scientist. Earning his undergraduate degree in Biological Sciences from the University of Chicago and his Ph.D. in Neuroscience from Baylor College of Medicine, Dr. Oliva brings with him extensive experience in the fields of health science and education.

James Clavijo joined Longeveron in 2019. Mr. Clavijo has 25 years of experience as a Financial Officer for pharmaceutical, healthcare and manufacturing companies. He served as the Chief Financial Officer for Aeterna Zentaris (NASDAQ:AEZS) and Tri-source Pharma. He served as Chief Accounting Officer at Soligenix (NASDAQ: SNGX). In addition, He worked with Deloitte & Touche and was an Officer in the U.S. Army. Mr. Clavijo was licensed as a CPA in Florida from 2000-2011. He is licensed in Florida as a real estate/business agent. Mr. Clavijo received a BA in Chemistry (PreMed) from the University of Florida, a BA in Accounting from the University of Nebraska, and a Masters in Accounting from Florida International University.

Scientific Advisory Board

Dr. Hidenori Arai
Jeremy D. Walston, M.D Laura L. Dugan, M.D. Elena Volpi, M.D., Ph.D. Hidenori Arai , M.D., Ph.D.
Dr. Jeremy D. Walston, M.D. is a professor of medicine at the Johns Hopkins University School of Medicine. Dr. Laura Dugan is a professor of Alzheimer’s at Vanderbilt University and the geriatric medicine head, Division of Geriatric Medicine at the Department of Medicine, Brain Institute & Neuroscience Program Dr. Elena Volpi is the distinguished chair in Geriatric Medicine at the University of Texas Medical Branch. Dr. Arai is the Deputy Director of the National Center for Geriatrics and Gerontology (NCGG) of Japan, Director of the Center for Gerontology and Social Science (CGSS) at the NCGG.