Longwood Fund
longwoodfund.com Direct investor
Longwood Fund is a venture capital firm that creates and invests in science-based companies developing novel solutions for important medical problems. It partners with scientific co-founders to build companies, often taking active roles such as CEO or President.
Longwood Fund is a venture capital firm headquartered in Boston, United States. It invests directly in companies, from seed to growth, in biotech, pharmaceuticals and healthcare. 25 portfolio companies, as it reports.
“Longwood Fund creates & invests in science-based companies that develop novel solutions for important medical problems”
— Longwood Fund, own website
- Layer
- Direct investor
- Type
- Venture capital
- Headquarters
- Boston, United States
- Invests in
- US
- Sectors
- biotech, pharmaceuticals, healthcare
- Portfolio
- 25 companies
Co-invests most often with
Derived from portfolio pages both investors publish themselves: each pair below lists at least one company in common. 77 co-investors found.
- Astellas Venture Management 5 shared companies: sidewinderbio.com, dembiopharma.com, solutherapeutics.com, bicycletherapeutics.com…
- RA Capital Management 4 shared companies: evommune.com, pyxisoncology.com, interiusbio.com, kalvista.com
- Foresite Capital 4 shared companies: grail.com, engrail.com, avenzotx.com, bridgebio.com
- Frazier Life Sciences Management, LP 4 shared companies: kalvista.com, bridgebio.com, sidewinderbio.com, crystalystx.com
- SR One 4 shared companies: avenzotx.com, bicycletherapeutics.com, crystalystx.com, pulmocide.com
- Sofinnova Investments, INC. 3 shared companies: avenzotx.com, coultreon.com, xylocor.com
- Hercules Adviser LLC 3 shared companies: bridgebio.com, bicycletherapeutics.com, verastem.com
- Alta Partners 3 shared companies: dembiopharma.com, lassentherapeutics.com, progentos.com
- Atlas Venture 2 shared companies: aavantgardebio.com, rectifypharma.com
- Leaps by Bayer 2 shared companies: immunitastx.com, pyxisoncology.com
and 67 more — the graph.
Where this comes from
Every fact above was read from a page Longwood Fund publishes itself. Nothing is taken from third-party databases. Investment activity (deals, co-investors) is not yet recorded.
- https://www.longwoodfund.com/name, is_investor, layer, type, hq_country, hq_city, invests_in_geographies, stage_min, stage_max, sectors, thesis_quote, thesis_quote_page, description, portfolio_count, status
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Record 1364 · added 2026-08-28 · link last verified 2026-09-06 · confidence medium
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