Jason P. Hafler

Board Member at Expansion Therapeutics

Dr. Hafler joined Sanofi Ventures in 2014 with a background in early stage biotech investing and transactions. Prior to Sanofi, he was the Director of Corporate Development at RaNA Therapeutics, LLC, a company co-founded by his previous firm Atlas Venture. While at Atlas, Dr. Hafler was an Associate in the Life Sciences group and a Board Observer for several portfolio companies. Previously, he was a Flagship Ventures Entrepreneurial Fellow and consulted for the technology transfer company at the University of Cambridge while performing his doctoral research. Before his time at Cambridge, he was an analyst at JSB Partners LP, an investment banking firm focusing on advisory and business development activities in the life sciences space. Dr. Hafler currently serves on the Board of Directors for NeuroVia Inc., is a board observer for Navitor Pharmaceuticals, and is on the Board of Directors for Sanofi Ventures-backed seed stage companies. Dr. Hafler is on the Board of Trustees at the Buckingham Browne and Nichols school and is on the Board of Directors of The Magdalene College Foundation. Jason graduated with honors from Bowdoin College, and holds a Ph.D. from the University of Cambridge.


  • Board Member

    Current role


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