Flagship Pioneering Co-Investors 2026

Who Flagship Pioneering invests alongside: Modi Ventures, Acre Venture Partners, CPP Investments — mapped across 13 portfolio companies in 2 sectors and 2.

Flagship Pioneering accounts for 27 tracked companies with verified cap-table data, 27 of which disclose round sizes totalling $4.4B. The median disclosed raise is $120M, and the largest is Sana Biotechnology at $700M, ahead of Omega Therapeutics ($400M) and Sigilon Therapeutics ($363M).

The names that recur most often on these co-invested cap tables are Flagship Pioneering (27 companies), Altitude Life Science Ventures (3 companies), Canada Pension Plan Investment Board (2 companies), Alaska Permanent Fund (2 companies), BlackRock (2 companies), Stage 1 Ventures (2 companies). By latest disclosed round, the market skews Series A (7), Series B (5), Seed (4), Growth (3).

Best funded Flagship Pioneering companies

  1. Sana Biotechnology — $700M (latest: IPO)
  2. Omega Therapeutics — $400M (latest: IPO)
  3. Sigilon Therapeutics — $363M (latest: Growth)
  4. Cellarity — $274M (latest: Series C)
  5. Indigo — $250M (latest: Series F)
  6. Senda Biosciences — $226M (latest: Series C)
  7. Dyne Therapeutics — $200M (latest: Series E)
  8. Lila Sciences — $200M (latest: Seed)
  9. Harbinger Health — $190M (latest: Series B)
  10. Repertoire Immune Medicines — $189M (latest: Series B)
  11. Ampersand Biomedicines — $165M (latest: Series B)
  12. Alltrna — $159M (latest: Series B)
  13. Invaio Sciences — $142M (latest: Series C)
  14. Mirai Bio — $120M (latest: Series A)
  15. Ring Therapeutics — $117M (latest: Series B)

Flagship Pioneering Fund VIII General Partner LLC — related firms and companies (56)

Flagship Pioneering Fund VIII General Partner LLC profile · All research reports

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