| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | TAMMER OÜ | 🇪🇪Estonia | Active | 03/10/2025 – present |
| Person with significant control | H2Adsorb OÜ | 🇪🇪Estonia | Active | 30/09/2025 – present |
| Person with significant control | Terasmaa holding OÜ | 🇪🇪Estonia | Active | 11/12/2024 – present |
| Officer | Sihtasutus Katrin ja Raigo Tammo Heategevuse Fond | 🇪🇪Estonia | Active | 03/03/2023 – present |
| Person with significant control | TAMMER OÜ | 🇪🇪Estonia | Active | 27/10/2022 – present |
| Person with significant control | RAJU10X OÜ | 🇪🇪Estonia | Active | 31/08/2022 – present |
| Person with significant control | Aktsiaselts ESTANC | 🇪🇪Estonia | Active | 09/08/2021 – present |
| Person with significant control | TIFC OÜ | 🇪🇪Estonia | Active | 30/01/2020 – present |
| Person with significant control | Raigostar OÜ | 🇪🇪Estonia | Active | 30/10/2018 – present |
| Person with significant control | Adammo Vara OÜ | 🇪🇪Estonia | Active | 22/10/2018 – present |
| Person with significant control | Terasmaa OÜ | 🇪🇪Estonia | Active | 22/10/2018 – present |
03/10/2025
appointed
30/09/2025
appointed
22/10/2018
appointed