Fundraising Fox

Jason P. Hafler

Investor

Managing Director at Sanofi Ventures

Cambridge, Massachusetts

Writes $5M – $10M checks · typically $7.5M

About

Jason P. Hafler combines venture investing and biotech operating experience—ex-Translate Bio corporate development director and Atlas investor—and leads strategy and is public voice for a corporate VC's early-stage biotech focus.

Invests in

AI & Machine LearningBiotechData & InfrastructureHealthtechMedical Devices

Experience

  1. Sanofi VenturesManaging Directorcurrent2019 — present
  2. Sanofi VenturesHead Sanofi Ventures Investments2017 — 2019
  3. Sanofi VenturesSenior Director of Investments2015 — 2017Greater Boston
  4. Sanofi VenturesDirector of Investments2014 — 2015
  5. Buckingham, Browne & NicholsBoard of Trusteescurrent2011 — present
  6. Madgalene College FoundationMember Board of Directorscurrent2011 — present
  7. Beacon Hill Nursery SchoolMember Board of Trustees2018 — 2021
  8. RaNA TherapeuticsCorporate Development2012 — 2014
  9. Bowdoin CollegeFund Directors Board2010 — 2013
  10. Atlas VentureAssociate2010 — 2012
  11. Flagship VenturesFlagship Summer Fellow2010
  12. JSB-Partners, LPAnalyst2004 — 2006

Education

  1. University of CambridgePhD
  2. Bowdoin College
  3. BB&N

Skills & more

Financial Modeling16Venture Capital34Private Equity16Valuation11Corporate Development36Mergers2Investment Banking2Mergers & Acquisitions7Entrepreneurship8Capital Markets3Asset Management2Strategy9
+8 moreEmerging MarketsInvestmentsStart-upsCorporate FinanceHedge FundsAlternative InvestmentsInvestor RelationsDue Diligence

From Jason's professional profile.

Same school

Shared employers

Deals · 5

Star Therapeutics LLCBoard seat

via Sanofi Ventures · filed Oct 2025 · $125M raise

Matchpoint Therapeutics Inc.Board seat

via Sanofi Ventures · filed Oct 2022 · $70M raise

AbcuroBoard seat

via Sanofi Ventures · filed Jan 2021 · $42M raise

Escient PharmaceuticalsBoard seat

via Sanofi Ventures · filed Sep 2020 · $77.5M raise

Expansion TherapeuticsBoard seat

via Sanofi Ventures · filed Jun 2017 · $5M raise

Attribution from SEC filings, press coverage, and firm rosters.

Colleagues at Sanofi Ventures

Network4

Investors connected to Jason in public investor directories — a warm-intro map.