Founders / Alexander Mosa
Alexander Mosa
Alexander Mosa is a co-founder of Biossil, a health and biotech AI company based in Toronto. Alexander Mosa co-founded Biossil with Anthony Mouchantaf. Biossil had raised C$309.3M across 4 rounds as of November 2026, most recently a US$153M venture round in September 2026 led by OpenAI Startup Fund. The Canadian AI Newsletter last covered Biossil in September 2026.
Alexander Mosa is a co-founder of Biossil and serves as its Chief Scientific Officer and Chair. The Toronto company uses an AI platform to find drug candidates that stalled before finishing clinical trials, then buys or licenses them to continue development. Mosa co-founded Biossil in 2023 with Anthony Mouchantaf. Mosa holds a doctor of medicine degree and a PhD in virology, trained at the University Health Network, and trained to be an internal medicine specialist before leaving to start the company.
Co-founder of Biossil.
Biossil
AI platform to identify and revive failed late-stage drug candidates.
- Role
- Co-founder
- HQ
- Toronto, ON
- Founded
- 2023
- Status
- Active
- Disclosed raised
- C$309.3M
- Latest round
- Venture round, Sep 28, 2026
- Website
- biossil.co
Co-founders: Anthony Mouchantaf
Investors: OpenAI Startup Fund, Founders Fund, Staircase Ventures, Quiet Capital, Modern Capital, Golden Ventures, Panache Ventures, Duke University endowment, and 1 more
In the newsletter
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Data as of November 10, 2026.