# Trefoil Therapeutics funding: rounds and investors > Trefoil Therapeutics has raised $33M across 2 rounds since 2019. Investors include Correlation Ventures, Hatteras Venture Partners and Bios Partners. Source: https://millionrounds.com/company/trefoil-therapeutics (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Trefoil Therapeutics* 2 rounds we have observed, with the 8 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 Funding summary Updated 26 Oct 2026 **$33M** raised across 2 rounds since 2019, from 2 sources **$28M** Series A **$4.6M** Venture - **Latest round:** Venture, $4.6M May 2025 - **Biggest round:** $28M Series A · Jul 2019 - **Investors:** 8 (1 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. 2020 2021 2022 2023 2024 2025 **$28M** Series A **$4.6M** Venture - **First round:** Series A, $28M - **Biggest round:** $28M - **Between rounds:** 5.8 years ## The rounds - **May 2025** Venture **$4.6M** *1 new* *2 returning* [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [National Institutes of Health](https://millionrounds.com/fund/national-institutes-of-health) [Hatteras Venture Partners](https://millionrounds.com/fund/hatteras-venture-partners) Source recorded SEC filing: $4.6M sold, first sale Apr 2025 - **Jul 2019** Series A **$28M** *7 new* [Bios Partners](https://millionrounds.com/fund/bios-partners) Lead [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [Hatteras Venture Partners](https://millionrounds.com/fund/hatteras-venture-partners) [Aju IB Investment](https://millionrounds.com/fund/aju-ib-investment) [Access Industries](https://millionrounds.com/fund/access-industries) [ExSight Ventures](https://millionrounds.com/fund/exsight-ventures) [InFocus Capital Partners](https://millionrounds.com/fund/infocus-capital-partners) Reported by Hatteras Venture Partners SEC filing: $11M sold, first sale Jul 2019 ## 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 A** 2019 **Venture** 2025 [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [Hatteras Venture Partners](https://millionrounds.com/fund/hatteras-venture-partners) [Bios Partners](https://millionrounds.com/fund/bios-partners) L [National Institutes of Health](https://millionrounds.com/fund/national-institutes-of-health) [Aju IB Investment](https://millionrounds.com/fund/aju-ib-investment) [Access Industries](https://millionrounds.com/fund/access-industries) [ExSight Ventures](https://millionrounds.com/fund/exsight-ventures) [InFocus Capital Partners](https://millionrounds.com/fund/infocus-capital-partners) ## Everyone who backed them [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) VC firm **2** rounds [Hatteras Venture Partners](https://millionrounds.com/fund/hatteras-venture-partners) VC firm **2** rounds [Bios Partners](https://millionrounds.com/fund/bios-partners) Private equity **1** round, led 1 [National Institutes of Health](https://millionrounds.com/fund/national-institutes-of-health) Government **1** round [Aju IB Investment](https://millionrounds.com/fund/aju-ib-investment) VC firm **1** round [Access Industries](https://millionrounds.com/fund/access-industries) Corporate VC **1** round [ExSight Ventures](https://millionrounds.com/fund/exsight-ventures) VC firm **1** round [InFocus Capital Partners](https://millionrounds.com/fund/infocus-capital-partners) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=trefoil-therapeutics). ## Quick answers about Trefoil Therapeutics ### Who invested in Trefoil Therapeutics? Trefoil Therapeutics's investors include Correlation Ventures, Hatteras Venture Partners, Bios Partners, National Institutes of Health and Aju IB Investment, and 3 more on record. ### How much has Trefoil Therapeutics raised? Trefoil Therapeutics has raised $33M across 2 rounds since 2019. ### When did Trefoil Therapeutics last raise? Trefoil Therapeutics's most recent round was a Venture of $4.6M in May 2025. ### What was Trefoil Therapeutics's biggest round? Trefoil Therapeutics's largest round on record is $28M (Series A), in Jul 2019, led by Bios Partners. ### Who backed Trefoil Therapeutics first? Trefoil Therapeutics's first round on record, in Jul 2019, was backed by Bios Partners, Correlation Ventures and Hatteras Venture Partners and 4 others. ### What stage is Trefoil Therapeutics at? Trefoil Therapeutics's latest named round is a Venture, in May 2025. ### Where is Trefoil Therapeutics based? Trefoil Therapeutics is based in the United States. ### Who led Trefoil Therapeutics's rounds? Bios Partners led the Series A in 2019. ## Companies like Trefoil Therapeutics In the same sector, and raised in the last eighteen months. [**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)[**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. 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