# Zenflow funding: rounds and investors > Zenflow has raised $56M across 3 rounds since 2014. Investors include Y Combinator, National Science Foundation and National Institutes of Health. Source: https://millionrounds.com/company/zenflow (Millionrounds; every figure on the page links to its filing or article) United States · [Series C startup](https://millionrounds.com/companies) # Who invested in *Zenflow* 3 rounds we have observed, with the 10 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 Y Combinator: W15 Funding summary Updated 26 Oct 2026 **$56M** raised across 3 rounds since 2014, from 3 sources **$120K** Seed **$31M** Series A **$24M** Series C - **Latest round:** Series C, $24M Nov 2024 - **Biggest round:** $31M Series A · Feb 2018 - **Investors:** 10 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. 2016 2018 2020 2022 2024 **$120K** Seed **$31M** Series A **$24M** Series C - **First round:** Seed, $120K - **Biggest round:** $31M - **Usual gap between rounds:** 6.8 years ## The rounds - **Nov 2024** Series C **$24M** *3 new* *1 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [National Institutes of Health](https://millionrounds.com/fund/national-institutes-of-health) [Eight Roads Ventures](https://millionrounds.com/fund/eight-roads) Source recorded SEC filing: $19M sold, first sale Nov 2024 - **Feb 2018** Series A **$31M** *3 new* [F-Prime Capital](https://millionrounds.com/fund/f-prime) [Invus](https://millionrounds.com/fund/invus) [Medical Technology Venture Partners](https://millionrounds.com/fund/medical-technology-venture-partners) Reported by FinSMEs SEC filing: $31M sold, first sale Sept 2017 - **Dec 2014** Seed **$120K** *4 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Farzad (Zod) Nazem](https://millionrounds.com/fund/farzad-zod-nazem) [Astia Angels](https://millionrounds.com/fund/astia-angels) [Varsity Ventures](https://millionrounds.com/fund/varsity) From a historical funding record ## 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. **Seed** 2014 **Series A** 2018 **Series C** 2024 [Y Combinator](https://millionrounds.com/fund/y-combinator) [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [National Institutes of Health](https://millionrounds.com/fund/national-institutes-of-health) [Eight Roads Ventures](https://millionrounds.com/fund/eight-roads) [F-Prime Capital](https://millionrounds.com/fund/f-prime) [Invus](https://millionrounds.com/fund/invus) [Farzad (Zod) Nazem](https://millionrounds.com/fund/farzad-zod-nazem) [Astia Angels](https://millionrounds.com/fund/astia-angels) [Varsity Ventures](https://millionrounds.com/fund/varsity) [Medical Technology Venture Partners](https://millionrounds.com/fund/medical-technology-venture-partners) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **1** round [National Institutes of Health](https://millionrounds.com/fund/national-institutes-of-health) Government **1** round [Eight Roads Ventures](https://millionrounds.com/fund/eight-roads) VC firm **1** round [F-Prime Capital](https://millionrounds.com/fund/f-prime) VC firm **1** round [Invus](https://millionrounds.com/fund/invus) Private equity **1** round [Farzad (Zod) Nazem](https://millionrounds.com/fund/farzad-zod-nazem) VC firm **1** round [Astia Angels](https://millionrounds.com/fund/astia-angels) Angel network **1** round [Varsity Ventures](https://millionrounds.com/fund/varsity) VC firm **1** round [Medical Technology Venture Partners](https://millionrounds.com/fund/medical-technology-venture-partners) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=zenflow). ## Quick answers about Zenflow ### Who invested in Zenflow? Zenflow's investors include Y Combinator, National Science Foundation, National Institutes of Health, Eight Roads Ventures and F-Prime Capital, and 5 more on record. ### How much has Zenflow raised? Zenflow has raised $56M across 3 rounds since 2014. ### When did Zenflow last raise? Zenflow's most recent round was a Series C of $24M in Nov 2024. ### What was Zenflow's biggest round? Zenflow's largest round on record is $31M (Series A), in Feb 2018. ### Who backed Zenflow first? Zenflow's first round on record, in Dec 2014, was backed by Y Combinator, Farzad (Zod) Nazem and Astia Angels and 1 others. ### What stage is Zenflow at? Zenflow's latest named round is a Series C, in Nov 2024. ### Where is Zenflow based? Zenflow is based in the United States. ## Companies like Zenflow 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)[**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) ## 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