| Kiinteistö Oy Castellum Lahti Tevi CVR 0672087-7 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Vantaa Jaakonkatu 3 CVR 1066354-5 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Jyväskylän Mattilanniemi 6 CVR 1503558-0 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Espoo Piispanhuippu CVR 1612907-9 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Kiinteistö Oy Castellum Espoo Säterinkatu 6 CVR 1629021-7 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Kiinteistö Oy Castellum Helsinki Opus 3 CVR 1706892-5 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Jyväskylän Mattilanniemi 8 CVR 2119236-3 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Espoo Linnoitustie 3 CVR 2159587-5 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Castellum Tampere HVT 30 A Oy CVR 2178399-9 | BoardBoard of Directors | 2017 – 2021 | — | Dissolved |
| Castellum Tampere HVT 30 B Oy CVR 2178400-0 | BoardBoard of Directors | 2017 – 2021 | — | Dissolved |
| Castellum Tampere HVT 30 C Oy CVR 2178403-5 | BoardBoard of Directors | 2017 – 2021 | — | Dissolved |
| Kiinteistö Oy Castellum Tampere Hatanpään Valtatie 30 CVR 2178407-8 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Kiinteistö Oy Castellum Tampere HVT 30 B CVR 2178408-6 | BoardBoard of Directors | 2017 – 2021 | — | Dissolved |
| Kiinteistö Oy Castellum Tampere HVT 30 C CVR 2178411-5 | BoardBoard of Directors | 2017 – 2021 | — | Dissolved |
| Kiinteistö Oy Castellum Tampere HVT 30 Parkki CVR 2178412-3 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Castellum Helsinki Opus 3 Oy CVR 2330823-5 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Espoo Paalu CVR 2379341-0 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Espoo Voltti CVR 2379344-5 | BoardBoard of Directors | 2018 – 2021 | — | Dissolved |
| Kiinteistö Oy Castellum Espoo Derby CVR 2379346-1 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Espoo Spurtti CVR 2379351-7 | BoardBoard of Directors | 2018 – 2021 | — | Dissolved |
| Kiinteistö Oy Innova 4 CVR 2488224-7 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Castellum Vantaa Jaakonkatu 3 Oy CVR 2580836-4 | BoardBoard of Directors | 2018 – 2021 | — | Dissolved |
| Castellum Vantaa Jaakonkatu 3 Holding Oy CVR 2581121-3 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Turku Puutarhakatu 1 CVR 2658857-8 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Turku Puolalankatu 5 CVR 2658859-4 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Vantaa Martintalo CVR 2798553-2 | BoardBoard of Directors | 2020 – 2021 | — | Active |
| Castellum Tampere HVT 30 C Holding Oy CVR 2848441-4 | BoardBoard of Directors | 2017 – 2021 | — | Dissolved |
| Castellum Tampere HVT 30 B Holding Oy CVR 2848442-2 | BoardBoard of Directors | 2017 – 2021 | — | Dissolved |
| Castellum Tampere Hatanpään Valtatie 30 Oy CVR 2848444-9 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Kielo Jyväskylä HoldCo Oy CVR 2865523-6 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Kielo Office Solutions Oy CVR 2865525-2 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Kiinteistö Oy Innova 1 CVR 2865527-9 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Kiinteistö Oy Ohjelmakaari 2&10 CVR 2865528-7 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Kielo AR Service Oy CVR 2865529-5 | BoardChairperson | 2017 – 2021 | — | Active |
| Kielo Jyväskylä Oy CVR 2874585-6 | BoardBoard of Directors | 2017 – 2021 | — | Active |
| Kielo Martintalo Oy CVR 2916662-9 | BoardBoard of Directors | 2020 – 2023 | — | Dissolved |
| Castellum Trio Oy CVR 2917625-3 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Castellum Trio Holding Oy CVR 2917626-1 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Castellum Lahden Panimo CVR 2941757-1 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Kiinteistö Oy Innova 2 CVR 2959945-9 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Kiinteistö Oy Innova 3 CVR 2959946-7 | BoardBoard of Directors | 2019 – 2023 | — | Dissolved |
| Kiinteistö Oy Ylistönmäentie 24 CVR 2959947-5 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Kiinteistö Oy Ylistönmäentie 26 CVR 2959948-3 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Kiinteistö Oy Ylistönmäentie 31 CVR 2959949-1 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Kiinteistö Oy Survontie 9 CVR 2959950-4 | BoardBoard of Directors | 2021 – 2021 | — | Active |
| Kiinteistö Oy Castellum Helsinki Kirjurinkatu 3 CVR 3000491-8 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Castellum Helsinki Kirjurinkatu 3 Oy CVR 3000493-4 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Castellum Espoo Piispanhuippu Oy CVR 3016930-9 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Castellum Espoo Säteri Business Park Oy CVR 3016931-7 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Castellum BidCo 11 Oy CVR 3098249-8 | BoardBoard of Directors | 2019 – 2021 | — | Dissolved |
| Castellum BidCo 9 Oy CVR 3098251-9 | BoardBoard of Directors | 2019 – 2021 | — | Dissolved |
| Castellum HoldCo 11 Oy CVR 3098253-5 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Castellum Vantaa Martintalo Oy CVR 3098254-3 | BoardBoard of Directors | 2019 – 2021 | — | Active |