# Interius BioTherapeutics funding: rounds and investors > Interius BioTherapeutics has raised $73M across 2 rounds since 2024. Investors include RA Capital Management, Cormorant Asset Management and Longwood Fund. Source: https://millionrounds.com/company/interius-biotherapeutics (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Interius BioTherapeutics* 2 rounds we have observed, with the 4 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Pharma Funding summary Updated 26 Oct 2026 **$73M** raised across 2 rounds since 2024, from 2 sources **$51M** Series B **$22M** Venture - **Latest round:** Venture, $22M Jan 2025 - **Biggest round:** $51M Series B · Jun 2024 - **Investors:** 4 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2025 **$51M** Series B **$22M** Venture - **First round:** Series B, $51M - **Biggest round:** $51M - **Between rounds:** 7 months ## The rounds - **Jan 2025** Venture **$22M** *1 new* *3 returning* [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Longwood Fund](https://millionrounds.com/fund/longwood-fund) [Bain Capital Life Sciences](https://millionrounds.com/fund/bain-capital-life-sciences) Source recorded - **Jun 2024** Series B **$51M** *3 new* [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Longwood Fund](https://millionrounds.com/fund/longwood-fund) Source recorded SEC filing: $51M sold, first sale May 2024 ## Founders and team From the SEC filings it signed: 2 on the team. - **Dora R. Mitchell** Executive Officer i - **Philip R. Johnson** Executive Officer, Director i On the board, as filed i *Bihua O. Chen* *Leon R. Moulder* *Tomas R. Kiselak* ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series B** 2024 **Venture** 2025 [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Longwood Fund](https://millionrounds.com/fund/longwood-fund) [Bain Capital Life Sciences](https://millionrounds.com/fund/bain-capital-life-sciences) ## Everyone who backed them [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) Private equity **2** rounds [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) Private equity **2** rounds [Longwood Fund](https://millionrounds.com/fund/longwood-fund) VC firm **2** rounds [Bain Capital Life Sciences](https://millionrounds.com/fund/bain-capital-life-sciences) Private equity **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=interius-biotherapeutics). ## Quick answers about Interius BioTherapeutics ### Who invested in Interius BioTherapeutics? Interius BioTherapeutics's investors include RA Capital Management, Cormorant Asset Management, Longwood Fund and Bain Capital Life Sciences. ### How much has Interius BioTherapeutics raised? Interius BioTherapeutics has raised $73M across 2 rounds since 2024. ### When did Interius BioTherapeutics last raise? Interius BioTherapeutics's most recent round was a Venture of $22M in Jan 2025. ### What was Interius BioTherapeutics's biggest round? Interius BioTherapeutics's largest round on record is $51M (Series B), in Jun 2024. ### Who backed Interius BioTherapeutics first? Interius BioTherapeutics's first round on record, in Jun 2024, was backed by RA Capital Management, Cormorant Asset Management and Longwood Fund. ### What stage is Interius BioTherapeutics at? Interius BioTherapeutics's latest named round is a Venture, in Jan 2025. ### Where is Interius BioTherapeutics based? Interius BioTherapeutics is based in the United States. ## Companies like Interius BioTherapeutics In the same sector, and raised in the last eighteen months. [**Matchpoint Therapeutics** $220M · Oct 2026](https://millionrounds.com/company/matchpoint-therapeutics)[**Rx Bandz** Oct 2026](https://millionrounds.com/company/rx-bandz)[**Hera Biotech** $1.8M · Sept 2026](https://millionrounds.com/company/hera-biotech)[**GevRx Nutraceuticals** $300K · Sept 2026](https://millionrounds.com/company/gevrx-nutraceuticals)[**RegCell** $81M · Sept 2026](https://millionrounds.com/company/regcell)[**ClearSight Therapeutics** $307K · Sept 2026](https://millionrounds.com/company/clearsight-therapeutics) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app