# Heartseed funding: rounds and investors > Heartseed has raised $40M across 2 rounds since 2019. Investors include Nissay Capital, SMBC Venture Capital and SBI Investment. Every round with its source. Source: https://millionrounds.com/company/heartseed (Millionrounds; every figure on the page links to its filing or article) Japan · [Series D startup](https://millionrounds.com/companies) # Who invested in *Heartseed* 2 rounds we have observed, with the 9 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. Beauty Biotech Healthcare Funding summary Updated 26 Oct 2026 **$40M** raised across 2 rounds since 2019, from 2 sources **$26M** Series B **$14M** Series D - **Latest round:** Series D, $14M May 2023 - **Biggest round:** $26M Series B · Nov 2019 - **Investors:** 9 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 **$26M** Series B **$14M** Series D - **First round:** Series B, $26M - **Biggest round:** $26M - **Between rounds:** 3.4 years ## The rounds - **May 2023** Series D **$14M** *4 new* *1 returning* [SMBC Venture Capital](https://millionrounds.com/fund/smbc-venture-capital-2) [SBI Investment](https://millionrounds.com/fund/sbi-investment) [Nissay Capital](https://millionrounds.com/fund/nissay-capital) [UTokyo Innovation Platform](https://millionrounds.com/fund/utokyo-innovation-platform) [Keio Innovation Initiative](https://millionrounds.com/fund/keio-innovation-initiative-inc) Source recorded - **Nov 2019** Series B **$26M** *5 new* [Nissay Capital](https://millionrounds.com/fund/nissay-capital) [Astellas Venture Management](https://millionrounds.com/fund/astellas-venture-management) [Gene Techno Science](https://millionrounds.com/fund/gene-techno-science) JMDC SMBC Capital Reported by FinSMEs ## 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** 2019 **Series D** 2023 [Nissay Capital](https://millionrounds.com/fund/nissay-capital) [SMBC Venture Capital](https://millionrounds.com/fund/smbc-venture-capital-2) [SBI Investment](https://millionrounds.com/fund/sbi-investment) [UTokyo Innovation Platform](https://millionrounds.com/fund/utokyo-innovation-platform) [Keio Innovation Initiative](https://millionrounds.com/fund/keio-innovation-initiative-inc) [Astellas Venture Management](https://millionrounds.com/fund/astellas-venture-management) [Gene Techno Science](https://millionrounds.com/fund/gene-techno-science) JMDC SMBC Capital ## Everyone who backed them [Nissay Capital](https://millionrounds.com/fund/nissay-capital) VC firm **2** rounds [SMBC Venture Capital](https://millionrounds.com/fund/smbc-venture-capital-2) Investment bank **1** round [SBI Investment](https://millionrounds.com/fund/sbi-investment) VC firm **1** round [UTokyo Innovation Platform](https://millionrounds.com/fund/utokyo-innovation-platform) Growth equity **1** round [Keio Innovation Initiative](https://millionrounds.com/fund/keio-innovation-initiative-inc) VC firm **1** round [Astellas Venture Management](https://millionrounds.com/fund/astellas-venture-management) Corporate VC **1** round [Gene Techno Science](https://millionrounds.com/fund/gene-techno-science) Growth equity **1** round JMDC no record of our own yet **1** round SMBC Capital no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=heartseed). ## Also claim to have backed them These 2 firms list Heartseed as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Angel Bridge](https://millionrounds.com/fund/angel-bridge) Angel network Per its own site [Medical Incubator Japan K.K.](https://millionrounds.com/fund/medical-incubator-japan-k-k) VC firm Per its own site ## Quick answers about Heartseed ### Who invested in Heartseed? Heartseed's investors include Nissay Capital, SMBC Venture Capital, SBI Investment, UTokyo Innovation Platform and Keio Innovation Initiative, and 4 more on record. ### How much has Heartseed raised? Heartseed has raised $40M across 2 rounds since 2019. ### When did Heartseed last raise? Heartseed's most recent round was a Series D of $14M in May 2023. ### What was Heartseed's biggest round? Heartseed's largest round on record is $26M (Series B), in Nov 2019. ### Who backed Heartseed first? Heartseed's first round on record, in Nov 2019, was backed by Nissay Capital, Astellas Venture Management and Gene Techno Science and 2 others. ### What stage is Heartseed at? Heartseed's latest named round is a Series D, in May 2023. ### Where is Heartseed based? Heartseed is based in Japan. ## Companies like Heartseed In the same sector, and raised in the last eighteen months. [**Kinish** $35M · Oct 2026](https://millionrounds.com/company/kinish)[**RadioNano Therapeutics** $955K · Oct 2026](https://millionrounds.com/company/radionano-therapeutics)[**AI Dock** $1.6M · Aug 2026](https://millionrounds.com/company/ai-dock)[**Dioseve** $12M · Jun 2026](https://millionrounds.com/company/dioseve)[**CareLink** $1.5M · Jun 2026](https://millionrounds.com/company/carelink)[**Neusignal Therapeutics** $40M · Jun 2026](https://millionrounds.com/company/neusignal-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