| H O H INVEST I/S CVR 11339107 | OtherStakeholder | 1985 – 1999 | — | Active |
| DANSK ELEKTROLYSE A/S CVR 13630844 | BoardBoard of Directors | 1999 – 2000 | — | Dissolved |
| EJENDOMSANPARTSSELSKABET AF 27. DECEMBER 1989 CVR 13824231 | BoardBoard of Directors | 1989 – 2010 | — | Dissolved |
| LEASINGANPARTSSELSKABET AF 27. DECEMBER 1989 CVR 13824290 | OtherFounder | 1989 – 1998 | — | Dissolved |
| FINANSIERINGSANPARTSSELSKABET AF 27. DECEMBER 1989 CVR 13824347 | OtherFounder | 1989 – 1998 | — | Dissolved |
| HOH GELINECK A/S CVR 15111089 | BoardBoard of Directors | 1991 – 1994 | — | Dissolved |
| MP INVEST ApS CVR 15924195 | BoardBoard of Directors | 1964 – 1990 | — | Dissolved |
| Uniq Filtration A/S CVR 21826030 | BoardChairman | 1997 – 1997 | — | Dissolved |
| JAN NYGAARD KØBENHAVN A/S CVR 25290321 | BoardChairman | 2014 – 2016 | — | Dissolved |
| KEMP & LAURITZEN VAND & MILJØ A/S CVR 27258328 | BoardChairman | 1997 – 1998 | — | Dissolved |
| JAN NYGAARD A/S CVR 17858092 | BoardChairman | 2003 – 2003 | — | Active |
| Luisa & ko ApS CVR 15252294 | BoardChairman | 2009 – 2018 | — | Dissolved |
| KEMIC VANDRENS A/S CVR 29146233 | BoardChairman | 2005 – 2024 | — | Active |
| MILJØ CONTRACTORS A/S CVR 77847928 | BoardChairman | 1997 – 2000 | — | Dissolved |
| HOH KVR A/S CVR 81880816 | BoardChairman | 1997 – 2000 | — | Dissolved |
| HOH MILJØTEKNIK A/S CVR 83002913 | ManagementManagement | 1997 – 2001 | — | Dissolved |
| L&H - RØRBYG A/S CVR 86503417 | BoardBoard of Directors | 1979 – 1997 | — | Dissolved |
| SIEMENS TURBOMACHINERY EQUIPMENT A/S CVR 87871517 | BoardBoard of Directors | 1984 – 1997 | — | Dissolved |
| BWT Danmark A/S CVR 76381615 | BoardChairman | 1997 – 1999 | — | Active |
