# Star Therapeutics funding: rounds and investors > Star Therapeutics has raised $325M across 2 rounds since 2025. Investors include OrbiMed, Janus Henderson Investors and RA Capital Management. Source: https://millionrounds.com/company/star-therapeutics (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *Star Therapeutics* 2 rounds we have observed, with the 12 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. Biotech Healthcare Raised this month Funding summary Updated 26 Oct 2026 **$325M** raised across 2 rounds since 2025, from 2 sources **$125M** Series D **$200M** Round - **Latest round:** Round, $200M Oct 2026 - **Led by:** OrbiMed and Janus Henderson Investors - **Step-up i:** 1.6× - **Investors:** 12 (2 led) 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. 2026 **$125M** Series D **$200M** Round - **First round:** Series D, $125M - **Biggest round:** $200M - **Between rounds:** 14 months ## The rounds - **Oct 2026** Round **$200M** *6 new* *5 returning* [OrbiMed](https://millionrounds.com/fund/orbimed) Lead [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Lead [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Sofinnova Investments](https://millionrounds.com/fund/sofinnova-investments) [New Leaf Venture Partners](https://millionrounds.com/fund/new-leaf-venture-partners) [Catalio Capital Management](https://millionrounds.com/fund/catalio-capital-management) [Agent Capital](https://millionrounds.com/fund/agent-capital) [NYBC Ventures](https://millionrounds.com/fund/nybc-ventures) [Soleus Capital](https://millionrounds.com/fund/soleus-capital) [Redmile](https://millionrounds.com/fund/redmile) Reported by Pulse 2.0 - **Sept 2025** Series D **$125M** *6 new* [OrbiMed](https://millionrounds.com/fund/orbimed) [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Catalio Capital Management](https://millionrounds.com/fund/catalio-capital-management) [Blue Owl](https://millionrounds.com/fund/blue-owl) Source recorded SEC filing: $125M sold, first sale Sept 2025 ## Founders and team From Star Therapeutics's own website: 1 founder, 3 on the team. **Adam Rosenthal PhD** CEO and Founder - **Amrit Nagpal** Director - **Beth Seidenberg Md** Director - **Nancy Stagliano Phd** Executive Chair ## 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 D** 2025 **Round** 2026 [OrbiMed](https://millionrounds.com/fund/orbimed) L [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) L [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Catalio Capital Management](https://millionrounds.com/fund/catalio-capital-management) [Sofinnova Investments](https://millionrounds.com/fund/sofinnova-investments) [New Leaf Venture Partners](https://millionrounds.com/fund/new-leaf-venture-partners) [Blue Owl](https://millionrounds.com/fund/blue-owl) [Agent Capital](https://millionrounds.com/fund/agent-capital) [NYBC Ventures](https://millionrounds.com/fund/nybc-ventures) ## Everyone who backed them [OrbiMed](https://millionrounds.com/fund/orbimed) Private equity **2** rounds, led 1 [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Private equity **2** rounds, led 1 [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 [Catalio Capital Management](https://millionrounds.com/fund/catalio-capital-management) VC firm **2** rounds [Sofinnova Investments](https://millionrounds.com/fund/sofinnova-investments) VC firm **1** round [New Leaf Venture Partners](https://millionrounds.com/fund/new-leaf-venture-partners) VC firm **1** round [Blue Owl](https://millionrounds.com/fund/blue-owl) Asset manager **1** round [Agent Capital](https://millionrounds.com/fund/agent-capital) VC firm **1** round [NYBC Ventures](https://millionrounds.com/fund/nybc-ventures) Corporate VC **1** round [Soleus Capital](https://millionrounds.com/fund/soleus-capital) Private equity **1** round [Redmile](https://millionrounds.com/fund/redmile) Investment firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=star-therapeutics). ## Also claim to have backed them This firm lists Star Therapeutics as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above. [Frazier Life Sciences](https://millionrounds.com/fund/frazier-life-sciences) VC firm Per its own site ## Quick answers about Star Therapeutics ### Who invested in Star Therapeutics? Star Therapeutics's investors include OrbiMed, Janus Henderson Investors, RA Capital Management, Cormorant Asset Management and Catalio Capital Management, and 7 more on record. OrbiMed led its latest round. ### How much has Star Therapeutics raised? Star Therapeutics has raised $325M across 2 rounds since 2025. ### When did Star Therapeutics last raise? Star Therapeutics's most recent round was an Undisclosed round of $200M in Oct 2026, led by OrbiMed. ### What was Star Therapeutics's biggest round? Its most recent round, $200M in Oct 2026, is also its largest on record. ### Who backed Star Therapeutics first? Star Therapeutics's first round on record, in Sept 2025, was backed by OrbiMed, RA Capital Management and Janus Henderson Investors and 3 others. ### What stage is Star Therapeutics at? Star Therapeutics's latest named round is an Undisclosed round, in Oct 2026. ### Where is Star Therapeutics based? Star Therapeutics is based in the United States. ### Who led Star Therapeutics's rounds? OrbiMed led the Undisclosed round in 2026. ## Companies like Star Therapeutics In the same sector, and raised in the last eighteen months. [**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio) ## 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