| MAGNUSSEN ENGINEERING AS CVR 913823001 | OtherContact Person | Siden 2014 | — | Aktiv |
| OSO PROPERTY AS CVR 964458855 | BoardBoard of Directors | Siden 2021 | — | Aktiv |
| ONETANK AS CVR 921055595 | BoardChairman | Siden 2025 | — | Aktiv |
| OSO GROUP AS CVR 936603947 | ManagementChief Executive Officer | Siden 2018 | — | Aktiv |
| OSO HOTWATER LTD CVR 985777322 | OtherContact Person | Siden 2021 | — | Aktiv |
| OSO HOTWATER AB CVR 985777330 | OtherContact Person | Siden 2021 | — | Aktiv |
| ØSTENENGEN GÅRD ROY ANDRÉ MAGNUSSEN CVR 922740917 | OwnerOwner | Siden 2019 | — | Aktiv |
| OSO LOGISTICS AS CVR 831021322 | ManagementChief Executive Officer | Siden 2025 | — | Aktiv |
| NORTEAM EIENDOM AS CVR 827385492 | BoardChairman | Siden 2023 | — | Aktiv |
| FLOWFORM AS CVR 827385522 | BoardChairman | Siden 2023 | — | Aktiv |
| NORTEAM HOLDING AS CVR 929169212 | ManagementChief Executive Officer | Siden 2025 | — | Aktiv |
| OSO HOTWATER AS CVR 986173617 | BoardChairman | Siden 2021 | — | Aktiv |
| FILTERUNIQ AS CVR 998589894 | BoardBoard of Directors | Siden 2012 | — | Aktiv |
| OSO ENERGY AS CVR 925156663 | BoardChairman | Siden 2020 | — | Aktiv |
| OSO TECHNOLOGY AS CVR 989031503 | BoardBoard of Directors | Siden 2021 | — | Aktiv |
