| Insinööritoimisto Pontek Oy CVR 0201880-2 | BoardBoard of Directors | 2020 – 2025 | — | Active |
| Insinööritoimisto W. Zenner Oy CVR 0570636-0 | BoardChairperson | 2021 – 2025 | — | Active |
| Solwers Oyj CVR 0720734-6 | ManagementChief Executive Officer | 2019 – 2025 | — | Active |
| Oy Polyplan Ab CVR 0916091-6 | BoardBoard of Directors | 2024 – 2025 | — | Active |
| Finnmap Infra Oy CVR 0921976-2 | BoardBoard of Directors | 2017 – 2026 | — | Active |
| Geounion Oy CVR 0944273-7 | BoardBoard of Directors | 2021 – 2025 | — | Active |
| Davidsson Tarkela Siren Arkkitehdit Oy CVR 1025174-3 | BoardChairperson | 2022 – 2025 | — | Active |
| Kalliotekniikka Consulting Engineers Oy CVR 1484723-7 | BoardChairperson | 2024 – 2025 | — | Active |
| Inmeco Oy Rakennuskonsultit CVR 1637178-9 | BoardBoard of Directors | 2021 – 2025 | — | Active |
| Solwers Kiinteistöt Oy CVR 1734675-3 | OtherDeputy Member | 2020 – 2020 | — | Active |
| Taitotekniikka Oy CVR 1856600-2 | BoardBoard of Directors | 2020 – 2025 | — | Active |
| Finexplo Oy CVR 2276784-3 | OtherPerson with significant control | 2024 – 2026 | — | Active |
| Accado Oy Ab CVR 2308220-5 | BoardBoard of Directors | 2019 – 2025 | — | Active |
| Lukkaroinen Arkkitehdit Oy CVR 2557243-5 | BoardBoard of Directors | 2025 – 2025 | — | Active |
| Plan-Air Oy CVR 2794656-8 | BoardChairperson | 2022 – 2025 | — | Active |
| Solwers Finland Oy CVR 3331322-2 | BoardBoard of Directors | 2023 – 2026 | — | Active |
