Samsara BioCapital Co-Investors 2026

Who Samsara BioCapital invests alongside: Canaan Partners, Connecticut Innovations, Janus Henderson Investors — mapped across 12 portfolio companies in 1.

Samsara Biocapital accounts for 3 tracked companies with verified cap-table data, 3 of which disclose round sizes totalling $407M. The median disclosed raise is $61M, and the largest is FogPharma at $323M, ahead of MiroBio ($61M) and Primmune Therapeutics ($23M).

The names that recur most often on these co-invested cap tables are Samsara Biocapital (3 companies), ARCH Venture Partners (1 company), Milky Way Investments (1 company), Fidelity Management & Research Company (1 company), Nextech Invest (1 company), RA Capital Management (1 company). By latest disclosed round, the market skews Series D (1), Series A (1), Series B (1).

Best funded Samsara Biocapital companies

  1. FogPharma — $323M (latest: Series D)
  2. MiroBio — $61M (latest: Series A)
  3. Primmune Therapeutics — $23M (latest: Series B)

Samsara Biocapital — related firms and companies (47)

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