Funds, angels and corporates active in European rounds
| Investor | Type | Deals | Companies | Top sector | Active |
|---|---|---|---|---|---|
| Signia Ventures | Venture capital | 2 | 2 | Proptech | 2021 |
| SIKA | Corporate | 2 | 2 | Proptech | 2023–2026 |
| Silicon Badia | Venture capital | 2 | 2 | Software | 2021–2025 |
| Silicon Valley investors | Venture capital | 2 | 2 | Transportation | 2026 |
| Silke Flick | Angel | 2 | 1 | Software | 2023–2026 |
| Silverstrand Capital | Venture capital | 2 | 2 | Software | 2024–2025 |
| Silverstripe Investment Management | Venture capital | 2 | 2 | Fintech | 2023 |
| Silvertech Ventures | Venture capital | 2 | 2 | Software | 2018–2019 |
| Silvia Sommer | Angel | 2 | 2 | Edtech | 2022–2025 |
| Simba Santé | Venture capital | 2 | 1 | Healthtech | 2021–2022 |
| Simon Dawlat | Angel | 2 | 2 | Edtech | 2021–2023 |
| Simon Squibb | Angel | 2 | 2 | Fintech | 2021–2025 |
| Simone Canclini | Angel | 2 | 2 | Marketing | 2021–2022 |
| Simula Innovation | — | 2 | 2 | Consumer | 2017–2024 |
| SineWave Ventures | — | 2 | 2 | Fintech | 2016–2025 |
| SINTEF Venture IV | — | 2 | 2 | Deeptech | 2018–2022 |
| Sioux Technologies | Venture capital | 2 | 1 | Healthtech | 2022–2026 |
| Sir John Egan | Angel | 2 | 2 | Energy | 2022–2023 |
| Sir Richard Branson | — | 2 | 2 | Fintech | 2017–2022 |
| Sir Ronald Cohen | — | 2 | 2 | Healthtech | 2017–2021 |
| Siret Ünsal | Angel | 2 | 2 | AI | 2023 |
| Siris Capital Group | — | 2 | 1 | Travel | 2020–2023 |
| Siskon | Corporate | 2 | 2 | Software | 2025 |
| Sisu Ventures | Venture capital | 2 | 2 | Gaming | 2023–2026 |
| SiteGround | Corporate | 2 | 2 | Transportation | 2024 |
