Companies / Biossil
Biossil
Biossil is a health and biotech AI company based in Toronto, Ontario. It had raised C$309.3M as of November 2026, most recently a US$153M venture round in September 2026 led by OpenAI Startup Fund.
AI platform to identify and revive failed late-stage drug candidates.
biossil.co- Founded
- 2023
- Category
- Health/
Bio AI - Status
- Active
- Disclosed raised
- C$309.3M
Funding history
| Round | Date | Amount | Investors |
|---|---|---|---|
| Venture round | Sep 28, 2026 | US$153M | OpenAI Startup Fund (lead); Founders Fund, Quiet Capital, Modern Capital, Golden Ventures, Panache Ventures, Duke University endowment, Abu Dhabi Investment Council. About C$216M, at a US$1B valuation. Led by the OpenAI Startup Fund, which provided the majority of the round; Founders Fund, Quiet Capital, Modern Capital, Golden Ventures, Panache Ventures, Duke University's endowment and the Abu Dhabi Investment Council participated. Round not named and not formally announced: reported by The Globe and Mail on Sep 28, 2026 and confirmed by CEO Anthony Mouchantaf. An August 2026 Corporations Canada filing created the new preferred share class. |
| Series B | Apr 21, 2026 | US$43M | Founders Fund and OpenAI Startup Fund (co-leads). Series B co-led by Founders Fund and the OpenAI Startup Fund. Closed in fall 2025 and announced Apr 21, 2026, when Biossil came out of stealth with about US$68.7M raised in total. |
| Series A | 2024 | US$22M | Founders Fund (lead). round type approximated; Founders Fund led |
| Seed | 2023 | C$3.7M | Staircase Ventures (lead); Golden Ventures, Panache Ventures. 3-yr stealth; amounts per Globe/The Logic |
Founders
- Anthony Mouchantaf, CEO/Co-founder.
- Alexander Mosa, Co-founder.
In the newsletter
Sources
- theglobeandmail.com: Biossil venture round announcement
- betakit.com: Biossil venture round announcement
- linkedin.com: Biossil venture round announcement
- Covered in Canadian AI Newsletter, Issue 28
- thelogic.co: Biossil series b announcement
- osler.com: Biossil series b announcement
- theglobeandmail.com: Biossil series b announcement
- Covered in Canadian AI Newsletter, Issue 11
Data as of November 10, 2026.