| HHE ENTREPRISE A/S CVR 20219483 | BoardBoard of Directors | 1997 – 2007 | — | Dissolved |
| CHR. GULDHAMMER JENSEN HOLDING ApS CVR 20241179 | BoardBoard of Directors | 1997 – 2020 | — | Dissolved |
| HHE FORSYNING A/S CVR 24211819 | BoardBoard of Directors | 2000 – 2007 | — | Dissolved |
| BOE FORSYNING A/S CVR 25471091 | BoardBoard of Directors | 2007 – 2008 | — | Dissolved |
| HHE HOLDING A/S CVR 25776666 | BoardBoard of Directors | 2000 – 2007 | — | Dissolved |
| HHE NET A/S CVR 25794435 | BoardBoard of Directors | 2000 – 2007 | — | Dissolved |
| REGIONALE NET NORDJYLLAND A/S CVR 26232392 | OtherDeputy | 2010 – 2012 | — | Dissolved |
| GULDHAMMER 2017 A/S CVR 26402964 | BoardBoard of Directors | 2002 – 2003 | — | Dissolved |
| HHE ENERGI A/S CVR 27484476 | BoardBoard of Directors | 2003 – 2008 | — | Dissolved |
| HHE BREDBÅND A/S CVR 29202443 | BoardBoard of Directors | 2005 – 2007 | — | Dissolved |
| NYFORS HOLDING A/S CVR 30545761 | BoardBoard of Directors | 2007 – 2017 | — | Dissolved |
| NYFORS ENTREPRISE A/S CVR 30545788 | BoardBoard of Directors | 2007 – 2016 | — | Dissolved |
| NYFORS FIBERNET A/S CVR 30545826 | BoardBoard of Directors | 2007 – 2016 | — | Dissolved |
| NORDJYSK ELNET A/S CVR 30545842 | BoardBoard of Directors | 2007 – 2016 | — | Dissolved |
| Brovst Vand A.m.b.a. CVR 31441137 | BoardBoard of Directors | 2019 – 2023 | — | Active |
| NYFORS FORSYNING A/S CVR 31610982 | BoardBoard of Directors | 2008 – 2016 | — | Dissolved |
| Norlys Group A/S CVR 25482190 | BoardBoard of Directors | 2016 – 2017 | — | Active |
| Andelsselskabet af 5. november CVR 38476114 | BoardBoard of Directors | 2016 – 2017 | — | Dissolved |
| Dyrlægegården Ejendomme ApS CVR 39118416 | ManagementManagement | 2017 – 2020 | — | Dissolved |
| CHR. GULDHAMMER JENSEN A/S CVR 42953814 | BoardBoard of Directors | 1972 – 2023 | — | Dissolved |
| Centrica Energy Trading A/S CVR 20293195 | OtherDeputy | 1998 – 2003 | — | Active |
| Kurt Guldhammer Holding ApS CVR 41484098 | ManagementManagement | 2020 – 2025 | — | Dissolved |
