| ALL-ROUND MASKINFABRIK A/S CVR 19789039 | ManagementManagement | 1997 – 1998 | — | Opløst |
| TAMSEN ApS CVR 21494836 | ManagementManagement | 1998 – 2010 | — | Opløst |
| Tamsen Stålteknik v/Rene Tamsen CVR 27109373 | OtherStakeholder | 2003 – 2010 | — | Aktiv |
| SELSKABET AF 30.03.2012 ApS CVR 30535634 | BoardBoard of Directors | 2008 – 2010 | — | Opløst |
| EUROCON INDUSTRISERVICE ApS CVR 71051412 | BoardBoard of Directors | 1999 – 2003 | — | Opløst |
| MG NORDIC ApS CVR 32663036 | OtherFounder | 2009 – 2015 | — | Opløst |
| MEI ApS CVR 32663206 | ManagementManagement | 2009 – 2016 | — | Opløst |
| TAMSEN HOLDING ApS CVR 36034904 | OtherFounder | 2014 – 2016 | — | Opløst |
| EASY METAL ApS CVR 36034912 | ManagementChief Executive Officer | 2014 – 2016 | — | Opløst |
| RT Holding Aarhus ApS CVR 37957666 | OtherFounder | 2016 – 2019 | — | Opløst |
| Tamsen Steel.Tech. ApS CVR 37958107 | ManagementManagement | 2016 – 2017 | — | Opløst |
| Grønkjær Munkholm A/S CVR 30279468 | BoardBoard of Directors | 2013 – 2016 | — | Aktiv |
| LISTO DK ApS CVR 38537504 | ManagementChief Executive Officer | 2017 – 2018 | — | Opløst |
| HYDRALOAD ApS CVR 30533860 | BoardBoard of Directors | 2008 – 2010 | — | Aktiv |
