| Havsborgen VVO AB CVR 5562798032 | BoardBoard of Directors | Since 2024 | — | Active |
| Havsborgen Kärven 9 AB CVR 5564477080 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| Havsborgen Bostäder Oskarshamn AB CVR 5567774046 | BoardBoard of Directors | Since 2022 | — | Active |
| Korsörten AB CVR 5590068614 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Havsborgen Kornknarren 3 AB CVR 5590729363 | BoardBoard of Directors | Since 2024 | — | Active |
| Havsborgen Elefanten 30 AB CVR 5590891320 | BoardBoard of Directors | Since 2024 | — | Active |
| Havsborgen Snickeriet 16 AB CVR 5591029995 | BoardBoard of Directors | Since 2024 | — | Active |
| Havsborgen Navet 2 AB CVR 5591030159 | BoardBoard of Directors | Since 2024 | — | Active |
| Havsborgen Venus 13 AB CVR 5592253842 | BoardBoard of Directors | Since 2022 | — | Active |
| Havsborgen Plåten 6 AB CVR 5592388317 | BoardBoard of Directors | Since 2025 | — | Active |
| Havsborgen Vimmerby AB CVR 5593283095 | BoardBoard of Directors | Since 2025 | — | Active |
| Havsborgen AB CVR 5594572280 | BoardBoard of Directors | Since 2023 | — | Active |
| MTW Holding AB CVR 5594634148 | BoardBoard of Directors | Since 2023 | — | Active |
