Investor profile
Jonathan Leff
Private equity, Venture capital & Executive Partner at Sofinnova Investments
Jonathan Leff works as an Executive Partner at Sofinnova Investments. The firm's known portfolio counts 9 companies.
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Investment focus
- Sector
- HealthcareSaaS
Contacts
Affiliated funds' portfolios
Executive Partner at Sofinnova Investments, whose known portfolio counts 9 companies
- Star Therapeutics
- Aeovian Pharmaceuticals
- Avenzo Therapeutics
- Atsena Therapeutics
- Axonis Therapeutics
- Edgewise Therapeutics
- Expedition Therapeutics
- Coultreon Biopharma
- ARTBIO
Investor Profile
Founders in the listed sectors Healthcare and SaaS, and focus areas Biotech, Drug Discovery, Life Science and Pharma fall inside that listing.
Stage-wise, the deals at Sofinnova Investments cluster around Growth, Late-Stage and Series A rounds.
The firm portfolio and the focus above give founders context on whether Jonathan Leff matches their raise.
Colleagues at Sofinnova Investments
Naomi Pacalin
Investor
San Francisco, United States
Nathalie Auber
Partner and CFO
San Francisco, United States
Lars Ekman
Excecutive Partner
San Diego, United States
Raymond Bower
Portfolio Manager of the Synergy Fund
Seattle, United States
Perry Nisen
Executive Partner/Advisor
San Diego, United States
Alain Azan
President
San Francisco, United States
Maha Katabi
General Partner
Canada
David Kabakoff
Executive Partner
Rancho Santa Fe, United States
Frequently asked questions
Who is Jonathan Leff?
Jonathan Leff is a private equity investor and venture capital investor based in Menlo Park, California, United States, listed as Executive Partner at Sofinnova Investments. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to Jonathan Leff personally.
What does Jonathan Leff invest in?
Listed sectors include Healthcare and SaaS; listed focus areas include Biotech, Drug Discovery, Life Science and Pharma. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Jonathan Leff invest at?
Sofinnova Investments appears in Growth, Late-Stage and Series A rounds across its known deals, and Jonathan Leff is listed there as Executive Partner. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Jonathan Leff listed at?
Jonathan Leff is listed as Executive Partner at Sofinnova Investments. 8 other people in the database share a firm with Jonathan Leff.
How do I contact Jonathan Leff?
A LinkedIn page is on file for Jonathan Leff. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal