Real-time security analytics that track user behavior
Castle has raised €2.1M across 3 funding rounds from 14 investors, most recently a Early VC round in Nov 2016. Based in Sweden; founded 2014; active in Software and Cybersecurity. Data as of 7 Aug 2026.
Timing: dormant vs cohort gap · momentum up. Funding-only estimates, not predictions and not investment advice — see signals.
| Date |
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| Stage |
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| Amount |
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| Investors |
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| 2016-11-01 | Early VC | €1.8M | Brainchild,F Prime Capital,First Round Capital,FundersClub,Greg Kidd,Liquid2 Ventures+3 more | View deal → |
| 2016-03-01 | Early VC | €0 | FundersClub | View deal → |
| 2015-02-01 | Seed | €318k | Anders Frankel,Erik Byrenius,Fredrik Nylander,Hampus Jakobsson,Henrik Torstensson | View deal → |
