Logos Capital is a San Francisco healthcare investment firm that backs biotech companies from private rounds through their public life, and turns up repeatedly in cancer drug financings.
Logos Capital is a healthcare-focused investment firm based in San Francisco with offices in San Diego and Boston, investing in private and public biotechnology companies with a data-driven, clinically grounded approach. It appears as a participant in several of the sourced oncology rounds in OnCo, typically as part of a syndicate rather than as the company-creating lead. Portfolio links here are derived from the startup records that name it; the firm's own site describes its team and approach rather than listing a full portfolio.
| Company | Stage | Type | Cancers | Latest round |
|---|---|---|---|---|
| 858 Therapeutics San Diego, CA, US | Growth stage | biotech | Ovarian cancerBreast cancer (all types)Prostate cancer | Series B 2024, $50M |
| Adcendo Copenhagen, DK | Growth stage | biotech | Sarcomas (soft tissue, bone, GIST) | Series C 2026, $75M |
| Obsidian Therapeutics Cambridge, MA, US | Public | cell therapy | MelanomaNon-small-cell lung cancer | Crossover 2026, $350M |
| Tango Therapeutics Boston, MA, US | Public | biotech | Pancreatic ductal adenocarcinomaNon-small-cell lung cancerGlioma & glioblastoma | IPO 2021, $353M |
| Third Arc Bio Spring House, PA, US | Startup | biotech | Series A extension 2026, $52M | |
| Triana Biomedicines Lexington, MA, US | Startup | biotech | Non-small-cell lung cancerHR-positive / HER2-negative breast cancer | Series B 2025, $120M |
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Shares Obsidian Therapeutics, Triana Biomedicines and the tag vc.
Shares Obsidian Therapeutics, Triana Biomedicines, Adcendo, Tango Therapeutics and the tag vc.
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