United States · 
Who invested in Sirius Therapeutics?
Sirius Therapeutics's investors include OrbiMed.
United States · Series B startup
Who invested in Sirius Therapeutics
One round we have observed, with the one investor 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.
Funding summaryUpdated 26 Oct 2026
$50Mraised across 1 round since 2025, from 1 source
- Latest round
- Series B, $50MMay 2025
- Investors
- 1
The rounds
- May 2025
Everyone who backed them
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Quick answers about Sirius Therapeutics
How much has Sirius Therapeutics raised?
Sirius Therapeutics has raised $50M across 1 round since 2025.
When did Sirius Therapeutics last raise?
Sirius Therapeutics's most recent round was a Series B of $50M in May 2025.
What was Sirius Therapeutics's biggest round?
Its most recent round, $50M in May 2025, is also its largest on record.
Who backed Sirius Therapeutics first?
Sirius Therapeutics's first round on record, in May 2025, was backed by OrbiMed.
What stage is Sirius Therapeutics at?
Sirius Therapeutics's latest named round is a Series B, in May 2025.
Where is Sirius Therapeutics based?
Sirius Therapeutics is based in the United States.
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