| Svensk Rederiservice Aktiebolag CVR 5563827301 | BoardBoard of Directors | Since 2022 | — | Active |
| Northern Offshore Services AB CVR 5564421161 | BoardBoard of Directors | Since 2020 | — | Active |
| Northern Supply Services AB CVR 5566800065 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Northern Energy & Supply AB CVR 5566863709 | BoardBoard of Directors | Since 2020 | — | Active |
| Northern Offshore Group AB CVR 5567479802 | BoardBoard of Directors | Since 2022 | — | Active |
| Northern Activity AB CVR 5567818397 | BoardBoard of Directors | Since 2022 | — | Active |
| Donsö Shipping Meet AB CVR 5568455215 | BoardBoard of Directors | Since 2021 | — | Active |
| Northern Properties AB CVR 5568865967 | BoardBoard of Directors | Since 2020 | — | Active |
| Northern Ship Management AB CVR 5590041843 | BoardBoard of Directors | Since 2020 | — | Active |
| N-O-S Skagerak AB CVR 5590081112 | BoardBoard of Directors | Since 2020 | — | Active |
| Northern Invest AB CVR 5590140694 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Northern Technical Services AB CVR 5591240055 | BoardBoard of Directors | Since 2022 | — | Active |
| Elin Kristensson AB CVR 5591539571 | BoardDeputy Board Member | Since 2022 | — | Active |
| Donsö Gamla Skola Fastighets AB CVR 5592276587 | BoardBoard of Directors | Since 2023 | — | Active |
| Donsö Utvecklings AB CVR 5592997448 | BoardBoard of Directors | Since 2022 | — | Dissolved |
| Sveriges Rederiorganisation AB CVR 5594854878 | BoardBoard of Directors | Since 2024 | — | Active |
| Northern Offshore Holding AB CVR 5594896390 | BoardBoard of Directors | Since 2024 | — | Active |
| Donsö fiskehamnsförening u.p.a. CVR 7572004294 | BoardBoard of Directors | Since 2020 | — | Active |