| Company | Role | Period | Ownership | Status |
|---|---|---|---|---|
| CALLSEC Joacim Grønberg CVR 987319844 | OwnerOwner | Since 2004 | — | Active |
| KOSTR AS CVR 898180352 | BoardBoard of Directors | Since 2022 | — | Active |
| KOSTR INSTALLASJON AS CVR 835727092 | ManagementChief Executive Officer | Since 2025 | — | Active |
| ILLU AS CVR 934099680 | ManagementChief Executive Officer | Since 2024 | — | Active |
| PEDMASTER AS CVR 934972317 | BoardChairman | Since 2025 | — | Active |
| JAN GRØNBERG EFTF. AS CVR 945872179 | ManagementChief Executive Officer | Since 2024 | — | Active |
| KOSTR POWERED BY DEAS AS CVR 936903363 | BoardBoard of Directors | Since 2026 | — | Active |
| MOSS HØYRE CVR 921070667 | BoardBoard of Directors | Since 2026 | — | Active |
| Person | Role | Shared companies | Profile |
|---|---|---|---|
| Board of Directors | 1company | View profile | |
| Board of Directors | 1company | View profile | |
| Deputy Member | 1company | View profile | |
| Board of Directors | 1company | View profile | |
| Chairman | 1company | View profile |