# Biossil funding: rounds and investors

> Biossil has raised $153M across 1 round since 2026. Investors include OpenAI Startup Fund, Founders Fund and Quiet Capital. Every round with its source.

Source: https://millionrounds.com/company/biossil (Millionrounds; every figure on the page links to its filing or article)

Canada · [Series B startup](https://millionrounds.com/companies)

# Who invested in *Biossil*

One round we have observed, with the 8 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI Biotech Healthcare

Raised 1 month ago

Funding summary Updated 26 Oct 2026

**$153M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series B, $153M Sept 2026
- **Led by:** OpenAI Startup Fund
- **Investors:** 8 (1 led)

See who backed them

## The rounds

- **Sept 2026** Series B **$153M** [OpenAI Startup Fund](https://millionrounds.com/fund/openai-startup-fund) Lead [Founders Fund](https://millionrounds.com/fund/founders-fund) [Quiet Capital](https://millionrounds.com/fund/quiet-capital) [Panache Ventures](https://millionrounds.com/fund/panache-ventures) [Golden Ventures](https://millionrounds.com/fund/golden-ventures) [Abu Dhabi Investments Council](https://millionrounds.com/fund/abu-dhabi-investments-council) [Modern Capital](https://millionrounds.com/fund/modern-capital) [Duke University's endowment fund](https://millionrounds.com/fund/duke-university-s-endowment-fund) Reported by BetaKit

## Everyone who backed them

[OpenAI Startup Fund](https://millionrounds.com/fund/openai-startup-fund) VC firm **1** round, led 1

[Founders Fund](https://millionrounds.com/fund/founders-fund) VC firm **1** round

[Quiet Capital](https://millionrounds.com/fund/quiet-capital) VC firm **1** round

[Panache Ventures](https://millionrounds.com/fund/panache-ventures) VC firm **1** round

[Golden Ventures](https://millionrounds.com/fund/golden-ventures) VC firm **1** round

[Abu Dhabi Investments Council](https://millionrounds.com/fund/abu-dhabi-investments-council) Hedge fund **1** round

[Modern Capital](https://millionrounds.com/fund/modern-capital) Hedge fund **1** round

[Duke University's endowment fund](https://millionrounds.com/fund/duke-university-s-endowment-fund) Growth equity **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=biossil).

## Quick answers about Biossil

### Who invested in Biossil?

Biossil's investors include OpenAI Startup Fund, Founders Fund, Quiet Capital, Panache Ventures and Golden Ventures, and 3 more on record. OpenAI Startup Fund led its latest round.

### How much has Biossil raised?

Biossil has raised $153M across 1 round since 2026.

### When did Biossil last raise?

Biossil's most recent round was a Series B of $153M in Sept 2026, led by OpenAI Startup Fund.

### What was Biossil's biggest round?

Its most recent round, $153M in Sept 2026, is also its largest on record.

### Who backed Biossil first?

Biossil's first round on record, in Sept 2026, was backed by OpenAI Startup Fund, Founders Fund and Quiet Capital and 5 others.

### What stage is Biossil at?

Biossil's latest named round is a Series B, in Sept 2026.

### Where is Biossil based?

Biossil is based in Canada.

### Who led Biossil's rounds?

OpenAI Startup Fund led the Series B in 2026.

## Companies like Biossil

In the same sector, and raised in the last eighteen months.

[**Quminex** $1.1M · Oct 2026](https://millionrounds.com/company/quminex)[**Astrus** $20M · Sept 2026](https://millionrounds.com/company/astrus)[**Altis Labs** $31M · Sept 2026](https://millionrounds.com/company/altis-labs)[**Thri5** $5.4M · Sept 2026](https://millionrounds.com/company/thri5)[**LawZero** $215M · Sept 2026](https://millionrounds.com/company/lawzero)[**Micrologic** $32M · Sept 2026](https://millionrounds.com/company/micrologic)

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