| Kiinteistö Oy Helsingin Pohjoinen Hesperiankatu 23 A CVR 2150680-1 | BoardBoard of Directors | Since 2024 | — | Active |
| Aalto-yliopistokiinteistöt Oy CVR 2842681-2 | OtherConfidential Clerk | Since 2017 | — | Active |
| Otaniemen Liikekeskus Oy CVR 2844113-1 | OtherConfidential Clerk | Since 2017 | — | Active |
| Koy Espoon Amfi CVR 2851112-8 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Otakaari 1 CVR 2851115-2 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Otakaari 3 CVR 2851117-9 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Otakaari 5 CVR 2851119-5 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Otakaari 7 CVR 2851121-6 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Sähkömiehentie 4 CVR 2851122-4 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Puumiehenkuja 2 CVR 2851126-7 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Konemiehentie 2 CVR 2851127-5 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Tietotie 1 CVR 2851129-1 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Kemistintie 1 CVR 2851130-4 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Vuorimiehentie 2 CVR 2851133-9 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Bionova CVR 2851134-7 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Otakaari 24 CVR 2851136-3 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Vuorimiehentie 1 CVR 2851139-8 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Betonimiehenkuja 5 CVR 2851144-3 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Metallimiehenkuja 4 CVR 2851150-7 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Espoon Väre CVR 2851151-5 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Helsingin Runeberginkatu 14-16 CVR 2851153-1 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Kirkkonummen Metsähovintie 114 CVR 2851156-6 | OtherConfidential Clerk | Since 2018 | — | Active |
| Koy Otaniemen Opiskelijakeskus CVR 3232571-5 | OtherConfidential Clerk | Since 2021 | — | Dissolved |