| GNC HOLDING A/S CVR 18809087 | BoardBoard of Directors | 1995 – 2003 | — | Dissolved |
| GIZA A/S CVR 19805646 | BoardBoard of Directors | 1999 – 2004 | — | Dissolved |
| AS3 CORPORATE CENTRE A/S CVR 25446526 | BoardBoard of Directors | 2000 – 2013 | — | Dissolved |
| DANISH MUSIC INVEST A/S CVR 25446577 | BoardBoard of Directors | 2000 – 2004 | — | Dissolved |
| AS3 20 APRIL 2010 A/S CVR 25871685 | BoardChairman | 2008 – 2013 | — | Dissolved |
| Gross-Nielsen Holding ApS CVR 26007364 | OtherFounder | 2001 – 2020 | — | Dissolved |
| AS3 PUBLIC A/S CVR 26057698 | BoardChairman | 2018 – 2020 | — | Dissolved |
| A2B A/S CVR 26187885 | BoardChairman | 2005 – 2011 | — | Dissolved |
| A2B Sprog A/S CVR 28295944 | BoardChairman | 2008 – 2020 | — | Dissolved |
| GIZA A/S CVR 28715331 | BoardChairman | 2005 – 2010 | — | Dissolved |
| STRESSCOACHING A/S CVR 28900724 | BoardChairman | 2005 – 2010 | — | Dissolved |
| HUMANTOR.NET A/S CVR 29137366 | BoardBoard of Directors | 2013 – 2013 | — | Dissolved |
| AS3MENTOR A/S CVR 29313679 | BoardChairman | 2010 – 2014 | — | Dissolved |
| NIELSEN KOMMUNIKATION ApS CVR 27634540 | BoardChairman | 2004 – 2016 | — | Active |
| NewCo af 24.05.19 ApS CVR 40540970 | OtherFounder | 2019 – 2019 | — | Dissolved |
| Selskabet af 290685 ApS CVR 40660259 | ManagementManagement | 2019 – 2020 | — | Dissolved |
| Gross-Nielsen Family 2020 ApS CVR 41763108 | OtherFounder | 2020 – 2020 | — | Dissolved |
