# Broken String Biosciences funding: rounds and investors > Broken String Biosciences has raised $29M across 4 rounds since 2023. Investors include Tengxun Touzi, Illumina Ventures and Eurostars. Source: https://millionrounds.com/company/broken-string-biosciences (Millionrounds; every figure on the page links to its filing or article) United Kingdom · [Venture startup](https://millionrounds.com/companies) # Who invested in *Broken String Biosciences* 4 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. Biotech Raised 12 months ago Funding summary Updated 26 Oct 2026 **$29M** raised across 4 rounds since 2023, from 4 sources **$15M** Series A **$8.0M** Series A **$6.4M** Round - **Latest round:** Round, $6.4M Oct 2025 - **Biggest round:** $15M Series A · Sept 2023 - **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. 2024 2025 **$15M** Series A **$8.0M** Series A **?** Venture **$6.4M** Round - **First round:** Series A, $15M - **Biggest round:** $15M - **Usual gap between rounds:** 9 months ## The rounds - **Oct 2025** Round **$6.4M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Jul 2025** Venture **Amount undisclosed** *1 new* *2 returning* [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) [Eurostars](https://millionrounds.com/fund/eurostars) [Illumina Ventures](https://millionrounds.com/fund/illumina-ventures) Source recorded - **Oct 2024** Series A **$8.0M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Sept 2023** Series A **$15M** *3 new* [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) [Illumina Ventures](https://millionrounds.com/fund/illumina-ventures) [DvH Ventures](https://millionrounds.com/fund/dieter-von-holtzbrinck-ventures) Source recorded ## Funding filed with regulators Broken String Biosciences filed 3 raises, $23M in all. Filings say how much was sold and to how many investors; they never name the investors. - Oct 2025 **$6.4M** UK share allotment - Oct 2024 **$8.0M** UK share allotment - Aug 2023 **$8.8M** UK share allotment ## Founders and team From Broken String Biosciences's own website: 5 on the team. - **Gabe Longoria** Chief Commercial Officer - **Samantha Macro** Chief Finance Officer - **Claire Dacombe** VP Sales APAC & EU - **Claudia Melara** VP Sales & Support, North America - **Hannah Ingram** VP Global Marketing ## 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** 2023 **Series A** 2024 **Venture** 2025 **Round** 2025 [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) [Illumina Ventures](https://millionrounds.com/fund/illumina-ventures) [Eurostars](https://millionrounds.com/fund/eurostars) [DvH Ventures](https://millionrounds.com/fund/dieter-von-holtzbrinck-ventures) ## Everyone who backed them [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) VC firm **2** rounds [Illumina Ventures](https://millionrounds.com/fund/illumina-ventures) VC firm **2** rounds [Eurostars](https://millionrounds.com/fund/eurostars) VC firm **1** round [DvH Ventures](https://millionrounds.com/fund/dieter-von-holtzbrinck-ventures) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=broken-string-biosciences). ## Quick answers about Broken String Biosciences ### Who invested in Broken String Biosciences? Broken String Biosciences's investors include Tengxun Touzi, Illumina Ventures, Eurostars and DvH Ventures. ### How much has Broken String Biosciences raised? Broken String Biosciences has raised $29M across 4 rounds since 2023. One round did not disclose an amount, so the total is a floor. ### When did Broken String Biosciences last raise? Broken String Biosciences's most recent round, $6.4M, was in Oct 2025. ### What was Broken String Biosciences's biggest round? Broken String Biosciences's largest round on record is $15M (Series A), in Sept 2023. ### Who backed Broken String Biosciences first? Broken String Biosciences's first round on record, in Sept 2023, was backed by Tengxun Touzi, Illumina Ventures and DvH Ventures. ### What stage is Broken String Biosciences at? Broken String Biosciences's latest named round is a Venture, in Jul 2025. ### Where is Broken String Biosciences based? Broken String Biosciences is based in the United Kingdom. ## Companies like Broken String Biosciences In the same sector, and raised in the last eighteen months. [**HydRegen** $12M · Oct 2026](https://millionrounds.com/company/hydregen)[**OMass Therapeutics** $442M · Oct 2026](https://millionrounds.com/company/omass-therapeutics)[**CMR Surgical** $1.1B · Oct 2026](https://millionrounds.com/company/cmr-surgical)[**Living Optics** $61M · Oct 2026](https://millionrounds.com/company/living-optics)[**Bactobio** $18M · Oct 2026](https://millionrounds.com/company/bactobio)[**RHYTHM AI** $23M · Sept 2026](https://millionrounds.com/company/rhythm-ai) ## 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