# Castor funding: rounds and investors > Castor has raised $47M across 2 rounds since 2021. Investors include Goodwater Capital, EISMEA and Eight Roads Ventures. Every round with its source. Source: https://millionrounds.com/company/castor (Millionrounds; every figure on the page links to its filing or article) Netherlands · [Seed startup](https://millionrounds.com/companies) # Who invested in *Castor* 2 rounds we have observed, with the 7 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 **$47M** raised across 2 rounds since 2021, from 2 sources **$45M** Series B **$1.5M** Seed - **Latest round:** Seed, $1.5M Jan 2023 - **Biggest round:** $45M Series B · Jul 2021 - **Investors:** 7 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. 2022 2023 **$45M** Series B **$1.5M** Seed - **First round:** Series B, $45M - **Biggest round:** $45M - **Between rounds:** 18 months [**Castor** Clinical trials 1 / 9 Their pitch deck **Castor's pitch deck, 9 slides** Each slide read for what it argues, against the decks that raised at the same stage.](https://millionrounds.com/decks/castor) ## The rounds - **Jan 2023** Seed **$1.5M** *4 new* [Goodwater Capital](https://millionrounds.com/fund/goodwater-capital) [Canary](https://millionrounds.com/fund/canary) [Latitud](https://millionrounds.com/fund/latitud) [Sprint Venture Capital](https://millionrounds.com/fund/sprint-venture-capital) Source recorded - **Jul 2021** Series B **$45M** *3 new* [EISMEA](https://millionrounds.com/fund/eismea) [Eight Roads Ventures](https://millionrounds.com/fund/eight-roads) [Two Sigma Ventures](https://millionrounds.com/fund/two-sigma-ventures) Source recorded ## 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** 2021 **Seed** 2023 [Goodwater Capital](https://millionrounds.com/fund/goodwater-capital) [EISMEA](https://millionrounds.com/fund/eismea) [Eight Roads Ventures](https://millionrounds.com/fund/eight-roads) [Canary](https://millionrounds.com/fund/canary) [Two Sigma Ventures](https://millionrounds.com/fund/two-sigma-ventures) [Latitud](https://millionrounds.com/fund/latitud) [Sprint Venture Capital](https://millionrounds.com/fund/sprint-venture-capital) ## Everyone who backed them [Goodwater Capital](https://millionrounds.com/fund/goodwater-capital) VC firm **1** round [EISMEA](https://millionrounds.com/fund/eismea) Investment firm **1** round [Eight Roads Ventures](https://millionrounds.com/fund/eight-roads) VC firm **1** round [Canary](https://millionrounds.com/fund/canary) VC firm **1** round [Two Sigma Ventures](https://millionrounds.com/fund/two-sigma-ventures) VC firm **1** round [Latitud](https://millionrounds.com/fund/latitud) VC firm **1** round [Sprint Venture Capital](https://millionrounds.com/fund/sprint-venture-capital) Angel network **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=castor). ## Quick answers about Castor ### Who invested in Castor? Castor's investors include Goodwater Capital, EISMEA, Eight Roads Ventures, Canary and Two Sigma Ventures, and 2 more on record. ### How much has Castor raised? Castor has raised $47M across 2 rounds since 2021. ### When did Castor last raise? Castor's most recent round was a Seed of $1.5M in Jan 2023. ### What was Castor's biggest round? Castor's largest round on record is $45M (Series B), in Jul 2021. ### Who backed Castor first? Castor's first round on record, in Jul 2021, was backed by EISMEA, Eight Roads Ventures and Two Sigma Ventures. ### What stage is Castor at? Castor's latest named round is a Seed, in Jan 2023. ### Where is Castor based? Castor is based in the Netherlands. ## Companies like Castor In the same sector, and raised in the last eighteen months. [**New Dawn Bio** $2.6M · Jun 2026](https://millionrounds.com/company/new-dawn-bio)[**ProQR Therapeutics** $68M · Jun 2026](https://millionrounds.com/company/proqr-therapeutics)[**Leyden Labs** $221M · Jun 2026](https://millionrounds.com/company/leyden-labs)[**The Protein Brewery** $59M · Jun 2026](https://millionrounds.com/company/the-protein-brewery)[**Laigo Bio** $20M · Apr 2026](https://millionrounds.com/company/laigo-bio)[**Onward** $122M · Apr 2026](https://millionrounds.com/company/onward) ## 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