# Biossil

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/biossil

- Industry: Biotechnology
- Headquarters: Toronto, Canada
- Website: www.biossil.co
- Total disclosed funding: $153M
- Investors on record: 10

## About

Based in Ontario, Canada, and founded in 2023 by co-founder and CEO Anthony Mouchantaf, JD, Biossil Inc., a.k.a. Biossil operates as a biotechnology company that focuses on developing therapies for biologically defined patient sub-populations in challenging diseases by leveraging its applied AI drug discovery platform. In September 2026, Biossil raised USD 153 million in venture funding led by Openai Startup Fund Management, with participation from Abu Dhabi Investment Council, Duke University Endowment, Modern Capital, Quiet Capital, Founders Fund, Golden Ventures, and Panache Ventures.

The company's Excavate software leverages a trillion-point multiomics pipeline alongside population-scale Electronic Medical Records (EMR) data to uncover disease variability and identify treatment-informing endotypes. Biossil's pipeline encompasses precision candidates targeting clinically variable diseases, with a focus on rare and neglected diseases, prophylactic vaccines, and chronic conditions exhibiting multiple disease phenotypes.  The company plans to utilize the September 2026 funding for artificial intelligence-assisted drug repurposing pipeline clinical development capacity and drug candidate expansion.

## Funding rounds

- Round, Sep 28, 2026, $153M — OpenAI, OpenAI Startup Fund, Founders Fund, Golden Ventures, Modern Capital, Panache Ventures, Abu Dhabi Investment Council, Quiet Capital, Duke University's endowment fund
- Seed, Apr 1, 2023 — Staircase Ventures

## Investors

- Staircase Ventures (https://capitalatlas.ai/funds/staircase-ventures) — Seed
- OpenAI
- OpenAI Startup Fund
- Founders Fund (https://capitalatlas.ai/funds/founders-fund)
- Golden Ventures (https://capitalatlas.ai/funds/golden-ventures)
- Modern Capital (https://capitalatlas.ai/funds/modern-capital)
- Panache Ventures (https://capitalatlas.ai/funds/panache-ventures)
- Abu Dhabi Investment Council (https://capitalatlas.ai/funds/abu-dhabi-investment-council)
- Quiet Capital (https://capitalatlas.ai/funds/quiet-capital)
- Duke University's endowment fund