| Kiinteistö Oy Valimontie 4 CVR 0235541-1 | OtherDeputy Member | Since 2023 | — | Dissolved |
| Kiinteistö Oy Kehätaso CVR 0551248-6 | BoardBoard of Directors | Since 2021 | — | Dissolved |
| Rakennuttaja CATHKA Oy CVR 0632411-0 | OtherDeputy Member | Since 2017 | — | Active |
| Oy Sports Car Center Ab CVR 0889463-5 | OtherConfidential Clerk | Since 2018 | — | Active |
| Catamount Oy CVR 0890755-5 | OtherConfidential Clerk | Since 2018 | — | Active |
| Järvenpään Auto-Arita Oy CVR 1736574-3 | OtherConfidential Clerk | Since 2018 | — | Active |
| Kiinteistökaari Oy CVR 1828474-2 | OtherConfidential Clerk | Since 2021 | — | Active |
| Scuderia Catamount Oy CVR 2248089-3 | OtherConfidential Clerk | Since 2018 | — | Active |
| Saimaan Auto-Arita Oy CVR 2248090-6 | OtherConfidential Clerk | Since 2021 | — | Active |
| Porvoon Auto-Arita Oy CVR 2421739-4 | BoardBoard of Directors | Since 2025 | — | Active |
| AU Rakennus ja Saneeraus Oy CVR 2613490-4 | BoardBoard of Directors | Since 2016 | — | Active |
| Arita Espoo Oy CVR 2671564-5 | BoardBoard of Directors | Since 2021 | — | Dissolved |
| Kiinteistö Oy Blue Park CVR 2865129-4 | OtherDeputy Member | Since 2021 | — | Dissolved |
| Catpe Invest Oy CVR 3136760-6 | OtherConfidential Clerk | Since 2025 | — | Active |
| Oy SCC Invest Ab CVR 3220291-8 | BoardBoard of Directors | Since 2021 | — | Active |
| Nordic Leasing Oy CVR 3240710-4 | OtherDeputy Member | Since 2023 | — | Active |
| Lumi Yachts Oy CVR 3321975-4 | OtherDeputy Member | Since 2023 | — | Active |
| SCC Holding Oy CVR 3617769-2 | OtherConfidential Clerk | Since 2026 | — | Active |
