# Top 5 Big Data Angel Investors in Estonia in May 2026

| Investor | Relevant Deals | Geography | Stage | Focus |
| --- | --- | --- | --- | --- |
| Jaan Tallinn | 4 | United States, Estonia, United Kingdom | Seed, Series A | Software, Artificial Intelligence, Internet |
| Timo Rein | 1 | Estonia, Finland, United Kingdom | Seed, Angel, Convertible Note | Software, Recruiting, Human Resources |
| Markku Jääskelainen | 1 | Estonia | Series A | Drones, Big Data, Software |
| Geoffrey Prentice | 1 | United States, India, Estonia | Seed, Series A, Series C | Apps, Messaging, Language Learning |
| Martin Tajur | 1 | Estonia, Poland, Ukraine | Pre-Seed, Seed, Angel | Software, SaaS, Recruiting |

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