Investor profile
Jim Tananbaum
Angel, Operator angel & Founder and CEO Foresite Capital at Foresite Capital
An angel investor and operator angel based in San Francisco, California, United States, Jim Tananbaum has one known investment, Peloton Therapeutics.
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Investment focus
- Sector
- AIHealthcare
Contacts
Jim Tananbaum portfolio company (1)
- Peloton Therapeutics
Affiliated funds' portfolios
Founder and CEO Foresite Capital at Foresite Capital, whose known portfolio counts 10 companies
- Midi Health
- Parabilis Medicines
- Candid Therapeutics
- Aeovian Pharmaceuticals
- OnKure Therapeutics
- Pinnacle Medicines
- SeraGene Therapeutics
- Indomo
- Alumis
- Slate Medicines
Investor Profile
The known portfolio sits in sectors AI and Healthcare, and focus areas Biotech, Digital Health, Drug Discovery and Gene Therapy.
Jim Tananbaum is listed for Seed and Series A rounds in the database.
The portfolio and focus above give founders context on whether Jim Tananbaum matches their raise.
Colleagues at Foresite Capital
Cindy Xiong
Partner
San Diego, United States
Michael Rome
Managing Director
Los Angeles, United States
Luke Bagaason
Director
Denver, United States
Stella Ho
CFO and Managing Director
Los Angeles, United States
Hadi Tabbaa
Managing Director
Darien, United States
Dennis Ryan
Chief Financial Officer & Managing Director
Greenbrae, United States
Dorothy Margolskee
Managing Director
Voorhees, United States
Richard Lau
Partner
Los Angeles, United States
Collin Yang-Wong
Director
San Francisco, United States
Jacqueline Guttman
Director
New York, United States
Stephen C. Peterson
Managing Director
Denver, United States
Rhonda Kaufman
Director
Bridgewater, United States
Justin M.
Principal, Healthcare Investments
United States
Marvin Correa
Director
San Francisco, United States
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Frequently asked questions
Who is Jim Tananbaum?
Jim Tananbaum is an angel investor and operator angel based in San Francisco, California, United States with one known investment on file, Peloton Therapeutics. The sections above list the sectors, stages and firms attached to that record.
What does Jim Tananbaum invest in?
Listed sectors include AI and Healthcare; listed focus areas include Biotech, Digital Health, Drug Discovery and Gene Therapy. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Jim Tananbaum invest at?
The database lists Jim Tananbaum for Seed and Series A rounds. 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 Jim Tananbaum listed at?
Jim Tananbaum is listed as Founder and CEO Foresite Capital at Foresite Capital. 14 other people in the database share a firm with Jim Tananbaum.
How do I contact Jim Tananbaum?
An email address, a phone number and a LinkedIn page are on file for Jim Tananbaum. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal