| Viafin Industrial Service Kaakkois-Suomi Oy CVR 0971113-2 | BoardBoard of Directors | Since 2023 | — | Active |
| Viafin Process Piping Oy CVR 2380659-2 | BoardBoard of Directors | Since 2021 | — | Active |
| Viafin GAS Oy CVR 2390339-2 | BoardBoard of Directors | Since 2021 | — | Active |
| Viafin OT Service Oy CVR 2401294-6 | BoardBoard of Directors | Since 2024 | — | Active |
| VPP Management Oy CVR 2535108-5 | OtherLiquidator | Since 2023 | — | Active |
| Viafin Workteam Oy CVR 2703130-9 | BoardBoard of Directors | Since 2025 | — | Active |
| Viafin Installation Oy CVR 2855211-4 | BoardBoard of Directors | Since 2024 | — | Active |
| VGT Management Oy CVR 2954711-4 | BoardChairperson | Since 2019 | — | Active |
| VS HOLDCO 1 Oy CVR 2954714-9 | BoardBoard of Directors | Since 2019 | — | Active |
| Viafin North Piping Oy CVR 3005409-3 | BoardBoard of Directors | Since 2026 | — | Active |
| Viafin Industrial Service Etelä-Suomi Oy CVR 3005411-4 | OtherDeputy Member | Since 2019 | — | Active |
| Viafin Industrial Service Oy CVR 3101367-2 | BoardBoard of Directors | Since 2021 | — | Active |
| Viafin Industrial Service Pohjanmaa Oy CVR 3101373-6 | BoardBoard of Directors | Since 2021 | — | Active |
| Viafin Industrial Service Keski-Suomi Oy CVR 3242573-2 | BoardBoard of Directors | Since 2022 | — | Active |
| Viafin Pohjois-Pohjanmaa Piping Oy CVR 3242576-7 | BoardBoard of Directors | Since 2022 | — | Active |
| Viafin Industrial Service Meri-Lappi Oy CVR 3289793-2 | BoardBoard of Directors | Since 2023 | — | Active |
| VIS Holdco 4 Oy CVR 3289798-3 | BoardBoard of Directors | Since 2022 | — | Active |
| Viafin Bear Oy CVR 3366535-9 | BoardBoard of Directors | Since 2025 | — | Active |
| Viafin Wind Service Oy CVR 3396443-9 | BoardBoard of Directors | Since 2024 | — | Active |
| VIS Newco 2 Oy CVR 3396446-3 | BoardBoard of Directors | Since 2024 | — | Active |
