Netherlands · 
Who invested in Castor?
Castor's investors include Goodwater Capital, EISMEA, Eight Roads Ventures, Canary and Two Sigma Ventures, and 2 more on record.
20222023
$45MSeries B$1.5MSeedNetherlands · Seed startup
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.
Funding summaryUpdated 26 Oct 2026
$47Mraised across 2 rounds since 2021, from 2 sources
$45MSeries B$1.5MSeed
- Latest round
- Seed, $1.5MJan 2023
- Biggest round
- $45MSeries B · Jul 2021
- Investors
- 7
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series B, $45M Jul 2021
- Biggest round
- $45M Series B · Jul 2021
- Between rounds
- 18 months from the last two
CastorClinical trials1 / 9Their pitch deckCastor's pitch deck, 9 slidesEach slide read for what it argues, against the decks that raised at the same stage.→The rounds
- Jan 2023
- Jul 2021
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.
Everyone who backed them
EISMEAInvestment firm1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Castor
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.
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