| KARMSUND PROPERTY AS CVR 919713631 | ManagementChief Executive Officer | Since 2017 | — | Active |
| KARMSUND SFH AS CVR 930343129 | BoardBoard of Directors | Since 2025 | — | Active |
| KARMSUND OFFSHOREBASE AS CVR 980734137 | ManagementChief Executive Officer | Since 2013 | — | Active |
| KARMSUND YARD AS CVR 980734161 | BoardChairman | Since 2013 | — | Active |
| KARMSUND HOLDING AS CVR 919713577 | ManagementChief Executive Officer | Since 2017 | — | Active |
| KARMSUND HFH AS CVR 930343072 | BoardBoard of Directors | Since 2023 | — | Active |
| HFH INVEST AS CVR 988950998 | ManagementChief Executive Officer | Since 2005 | — | Active |
| KARMSUND SKIPSSERVICE AS CVR 989795139 | BoardChairman | Since 2013 | — | Active |
| ARVE HENNING HYSTAD CVR 915131999 | OwnerOwner | Since 2015 | — | Active |
| HUSØY INDUSTRI INVEST AS CVR 916744692 | BoardBoard of Directors | Since 2022 | — | Active |
| KARMSUND PROTEIN AS CVR 921007906 | BoardBoard of Directors | Since 2022 | — | Active |
| MOLINERGUTT AS CVR 983478603 | BoardBoard of Directors | Since 2013 | — | Active |
| KARMSUND INDUSTRI INVEST AS CVR 916455941 | BoardChairman | Since 2015 | — | Active |
| FERKINGSTAD SJØBASE AS CVR 917887926 | BoardBoard of Directors | Since 2025 | — | Active |