| Company | Role | Period | Ownership | Status |
|---|
| Company | Role | Period | Ownership | Status |
|---|---|---|---|---|
| JKJ MONTAGE A/S CVR 14282343 | BoardBoard of Directors | 1990 – 2007 | — | Dissolved |
| J.K.J + D3S STÅLTEKNIK ApS CVR 27071031 | BoardBoard of Directors | 2008 – 2013 | — | Active |
| J.K.J. RØRTEKNIK ApS CVR 20003332 | BoardBoard of Directors | 1999 – 2008 | — | Dissolved |
| J.K.J. HOLDING GRENAA A/S CVR 26098068 | BoardBoard of Directors | 2004 – 2005 | — | Dissolved |
| I. M. ELMENHOFF & SØN A/S CVR 33887116 | BoardBoard of Directors | 1972 – 1998 | — | Dissolved |
| ELCON A/S CVR 10074185 | BoardBoard of Directors | 2018 – 2019 | — | Active |
| NRGI A.M.B.A. CVR 41989912 | OtherDeputy | 2020 – 2021 | — | Active |
| Person | Role | Shared companies | Profile |
|---|---|---|---|
| Chairman | 3companies | View profile | |
| Board of Directors | 3companies | View profile | |
| Chairman | 3companies | View profile | |
| Management | 3companies | View profile | |
| Management | 2companies | View profile |