Investing Profile

Jonathan Leff

InvestorVC

Executive Partner at Sofinnova Investments

sofinnova.com/team/jonathan-l...Menlo Park, California

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Networks Jonathan is a member of

University of Pennsylvania Network

515 CONNECTIONS

Merck Network

62 CONNECTIONS

Roche Network

51 CONNECTIONS

Roche Network

51 CONNECTIONS

Amgen Network

42 CONNECTIONS

Find Jonathan Leff on

Current Investing Position

Sofinnova Investments Partner

Investment Range

$100K - $5.0M

Sweet Spot

$1.5M

Investments On Record

Jonathan Leff is on these Sector & Stage Rankings

Pharmaceuticals (Seed)Consumer Health (Series A)BioTech (Seed)Consumer Health (Seed)Pharmaceuticals (Series A)Health IT (Series A)BioTech (Series A)Health & Hospital Services (Series A)San Francisco Bay Area Health IT (Seed)Digital Health (Series A)Digital Health (Seed)Health & Hospital Services (Seed)

Jonathan Leff's Investments On Record (2)

Company	StageDateRound Size	Total Raised
Expedition Therapeutics	Series AOct 2025$170M	$280M
Co-investors: Brett Zbar (General Atlantic)
Axonis Therapeutics	Series AOct 2024$120M	$120M
Co-investors: Milad Alucozai (Entrepreneur First), Rebecca Allan (BoxOne Ventures)

Jonathan Leff's Experience

Assistant Professor University of Colorado Anschutz Medical CampusPresent

Senior Director MerckPresent

Vice President - North America Medical Affairs AmgenPresent

Vice President, Global Head Inflammation Clinical Development RochePresent

Vice President RochePresent

Vice President and Chief Medical Officer Halozyme, Inc.Present

Chief Medical Officer Joanna Gerard PsychicPresent

Executive Vice President, Research and Development InterMunePresent

Senior Vice President and Chief Medical Officer Ascendis PharmaPresent

Board Member Avalyn PharmaPresent

Board Member Aerovate TherapeuticsPresent

Board Member Axonis TherapeuticsPresent

Executive Partner Sofinnova InvestmentsPresent

Jonathan Leff's Education

University of Pennsylvania B.A. Chemistry

University of Pennsylvania School of Medicine M.D. Medicine

University of Colorado Anschutz Internal Medicine Internship/Residency Internal Medicine Internship/Residency

Investors who invest with Jonathan Leff

Scouts & Angels Affiliated With Jonathan Leff