Investor profile
Castle Island Ventures has backed 3 European tech companies across 3 funding rounds between 2024 and 2025, joining rounds totalling €23M. Most active in Fintech and Deeptech. Data as of 7 Aug 2026.
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| Company | Country | Rounds | Total € |
|---|---|---|---|
| Build on Bitcoin | UK | 1 | €9.2M |
| BOB | UK | 1 | €8.1M |
| Project Eleven | UK | 1 | €5.2M |
| Company | Stage | Amount | Date |
|---|---|---|---|
| Build on Bitcoin | Seed | €9.2M | 2024-03 |
| BOB | Other | €8.1M | 2025-08 |
| Project Eleven | Other | €5.2M | 2025-06 |
