| Vesilahti-Lempäälän Biopower Oy CVR 2030683-2 | OtherDeputy Member | Since 2025 | — | Active |
| Finesta Finland Oy CVR 2116839-8 | BoardBoard of Directors | Since 2024 | — | Active |
| Sontek Oy CVR 2196144-1 | BoardBoard of Directors | Since 2013 | — | Active |
| Pyramid Holding Oy CVR 2210043-2 | ManagementChief Executive Officer | Since 2010 | — | Dissolved |
| UniqAir Oy CVR 2626040-9 | BoardBoard of Directors | Since 2025 | — | Active |
| Sontek Invest Oy CVR 2789544-9 | OtherConfidential Clerk | Since 2016 | — | Active |
| Sontek Ventures Oy CVR 2826325-9 | BoardBoard of Directors | Since 2017 | — | Active |
| Sontek Technologies Oy CVR 2852268-7 | BoardChairperson | Since 2018 | — | Dissolved |
| VIF Group Oy CVR 3020198-9 | OtherDeputy Member | Since 2019 | — | Active |
| Koivu ja Kuusi Osuuskunta CVR 3134270-8 | BoardBoard of Directors | Since 2022 | — | Active |
| Take Action Oy CVR 3248039-5 | OtherDeputy Member | Since 2024 | — | Active |
| Mobility Properties Oy CVR 3253292-5 | BoardBoard of Directors | Since 2022 | — | Active |
| UniqAir Group Oy CVR 3301049-1 | BoardChairperson | Since 2024 | — | Active |
| Sontek Private Equity Investments Oy CVR 3499384-8 | BoardBoard of Directors | Since 2025 | — | Active |
| Fokura Oy CVR 3502776-4 | OtherDeputy Member | Since 2025 | — | Active |