Longwood Fund
Venture capital
Portfolio collected from the firm’s website, last checked Jul 26, 2026.Raises and exits come from each company’s own SEC and company records.
12Deep-tech portfolio9 active
3Portfolio exitsAcquired or listed
1Raises, 12 monthsLatest: Mediar Therapeutics
13Co-investorsShare a portfolio company
Portfolio · 12 companies
| Company | Sector | Status | Latest raise | Raised |
|---|---|---|---|---|
| Mediar Therapeutics | Biotech | Active | Dec 23, 2025 | $74.6M |
| Carbon Biosciences | Biotech | Active | Jan 25, 2022 | $38.0M |
| Immunitas Therapeutics | Biotech | Active | Aug 24, 2021 | $29.1M |
| Juvenescence | Biotech | Active | Jun 7, 2021 | $114.5M |
| AP Neomorph | Biotech | Active | — | — |
| BE Biopharma | Biotech | Active | — | — |
| Neomorph | Biotech | Active | — | — |
| Newleos | Biotech | Active | — | — |
| Tome Biosciences | Biotech | Active | — | — |
| Pyxis Oncology | Biotech | Public | Mar 22, 2021 | $194.5M |
| TScan Therapeutics | Biotech | Public | Jan 28, 2021 | $123.3M |
| Vor Biopharma | Biotech | Public | Jul 10, 2020 | $110.1M |
Peer ranks
Portfolio size#40
Portfolio exits#69
Raises, 12 months#22
Co-investors#144
Co-investors
- Third Rock VenturesVenture capital3 shared
- Deerfield Capital ManagementVenture capital2 shared
- Alexandria Venture InvestmentsVenture capital1 shared
- ARCH VentureVenture capital1 shared
- Ascent Biomedical VenturesVenture capital1 shared
- BiogenVenture capital1 shared
- Goldman Sachs AlternativesVenture capital1 shared
- New Enterprise AssociatesVenture capital1 shared
- Novo HoldingsVenture capital1 shared
- Perceptive AdvisorsVenture capital1 shared
Sectors
- Biotech12
Portfolios are collected from investors’ own websites and matched to tracked deep-tech companies by name; duplicate listings of the same firm are merged. Exits and raises come from each company’s own record: Form D through the latest filing.