| AHS KURS AS CVR 912306674 | BoardChairman | Siden 2013 | — | Aktiv |
| TOM ARNTSEN HOLDING AS CVR 913295986 | ManagementChief Executive Officer | Siden 2014 | — | Aktiv |
| TOM ARNTSEN KONSULTING CVR 988576638 | OwnerOwner | Siden 2005 | — | Aktiv |
| VITOA AS CVR 936694357 | BoardChairman | Siden 2025 | — | Aktiv |
| ABG SUNDAL COLLIER HOLDING ASA CVR 961095026 | OwnerLegal Owner | Siden 2023 | 0.0% | Aktiv |
| NORCONSULT ASA CVR 963865724 | OwnerLegal Owner | Siden 2023 | 0.0% | Aktiv |
| KONGSBERG AUTOMOTIVE ASA CVR 942593821 | OwnerLegal Owner | Siden 2024 | 0.0% | Aktiv |
| MØSSAVEIEN 10 AS CVR 985572232 | BoardChairman | Siden 2020 | — | Aktiv |
| OK FERDIGBETONG AS CVR 918938451 | BoardChairman | Siden 2020 | — | Aktiv |
| KALVTRÅKKET BORETTSLAG CVR 919674172 | BoardChairman | Siden 2023 | — | Aktiv |
| OK KRISTOFFERSEN HOLDING AS CVR 929365038 | BoardChairman | Siden 2022 | — | Aktiv |
| KALVTRÅKKET 5 AS CVR 930468312 | BoardChairman | Siden 2022 | — | Aktiv |
| RINGVEIEN EIENDOM AS CVR 930468320 | BoardChairman | Siden 2022 | — | Aktiv |
| OK KRISTOFFERSEN ENTREPRENØR AS CVR 964151008 | BoardChairman | Siden 2020 | — | Aktiv |
| NIHF REGION MIDT CVR 984553137 | BoardDeputy Chairman | Siden 2020 | — | Aktiv |
