Investor profile
At One Ventures has backed 7 European tech companies across 7 funding rounds between 2021 and 2025, joining rounds totalling €74M. Most active in Cleantech and Energy. Data as of 7 Aug 2026.
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| Company | Country | Rounds | Total € |
|---|---|---|---|
| Stellaria | France | 1 | €23M |
| Transmutex | Switzerland | 1 | €21M |
| Factor2 Energy | Germany | 1 | €7.8M |
| Opibus | Sweden | 1 | €6.5M |
| Evove | UK |
| Company | Stage | Amount | Date |
|---|---|---|---|
| Stellaria | Other | €23M | 2025-07 |
| Transmutex | Series A | €21M | 2024-01 |
| Factor2 Energy | Seed | €7.8M | 2025-09 |
| Opibus |
| 1 |
| €6.4M |
| TEMO | France | 1 | €6.0M |
| Material Evolution | UK | 1 | €3.0M |
| €6.5M |
| 2021-11 |
| Evove | Other | €6.4M | 2023-03 |
| TEMO | Series A | €6.0M | 2024-01 |
| Material Evolution | Seed | €3.0M | 2021-11 |
