| UNICOOL A/S CVR 10058260 | BoardBoard of Directors | 2004 – 2010 | — | Active |
| ØLAND VENTILATIONSTEKNIK A/S CVR 18410583 | BoardBoard of Directors | 2001 – 2003 | — | Dissolved |
| ØLAND HOLDING ApS CVR 21340197 | OtherFounder | 1998 – 2005 | — | Dissolved |
| 4 X ØLAND I/S CVR 21407445 | OtherStakeholder | 1998 – 2004 | — | Active |
| DANSK ERHVERVSKAPITAL - UIIF A/S CVR 25638069 | BoardChairman | 2010 – 2012 | — | Dissolved |
| B. KREUTZFELDT HOLDING ApS CVR 26097479 | OtherFounder | 2001 – 2012 | — | Dissolved |
| K/S GOSPORT CVR 27968430 | OwnerLegal Owner | 2004 – 2022 | — | Active |
| GOSPORT KOMPLEMENTAR ApS CVR 27968473 | OwnerLegal Owner | 2005 – 2022 | — | Dissolved |
| JOHNNY ØLAND ApS CVR 29148953 | ManagementManagement | 2005 – 2012 | — | Dissolved |
| HJØRDIS & LEIF ØLAND ApS CVR 29148910 | OwnerLegal Owner | 2021 – 2022 | — | Dissolved |
| KH VENT A/S CVR 38935569 | BoardBoard of Directors | 2017 – 2018 | — | Dissolved |
| Holmland Holding JØ ApS CVR 41814616 | ManagementChief Executive Officer | 2020 – 2025 | — | Dissolved |
| HANNE HEUER HOLDING ApS CVR 34578702 | ManagementManagement | 2012 – 2012 | — | Active |
| NEDERBY ApS CVR 34902984 | ManagementManagement | 2013 – 2013 | — | Active |
| NB VENTILATION A/S CVR 41668016 | BoardBoard of Directors | 2017 – 2022 | — | Active |
| DinLeasing ApS CVR 36951273 | BoardChairman | 2015 – 2016 | — | Active |
| SeaSun International Co. ApS CVR 19372235 | ManagementManagement | 2014 – 2015 | — | Active |
| L. ØLAND VENTILATION A/S CVR 60994013 | BoardBoard of Directors | 1981 – 2015 | — | Active |
| FIRE EATER A/S CVR 59538713 | BoardBoard of Directors | 2015 – 2017 | — | Active |