| BIRKEBO BYG ApS CVR 10031052 | BoardBoard of Directors | 2000 – 2001 | — | Dissolved |
| EASYFLEX ApS CVR 30587197 | BoardChairman | 2007 – 2009 | — | Dissolved |
| F & L HOLDING A/S CVR 11210473 | OtherFounder | 1987 – 2003 | — | Dissolved |
| NETWORK MANAGEMENT CONSULTANTS A/S CVR 11932177 | BoardBoard of Directors | 1988 – 1993 | — | Dissolved |
| COMINCO A/S CVR 11932207 | BoardChairman | 1988 – 1993 | — | Dissolved |
| FISCHER-MADSEN & LORENZ PETERSEN OFFICE SYSTEMS CONSULTANTS A/S CVR 12101996 | BoardBoard of Directors | 1988 – 1993 | — | Dissolved |
| TPNETWORKS A/S CVR 12930089 | BoardBoard of Directors | 2004 – 2007 | — | Dissolved |
| FISCHER-MADSEN & LORENZ PETERSEN TELECOMMUNICATIONS CONSULTANTS ApS CVR 13623007 | BoardBoard of Directors | 1989 – 1995 | — | Dissolved |
| DANSKE FÆRDIGHEDSSPIL A/S CVR 14859640 | ManagementChief Executive Officer | 2005 – 2006 | — | Dissolved |
| SINTAS A/S CVR 18114704 | BoardChairman | 2000 – 2001 | — | Dissolved |
| UH COMMUNICATIONS ApS CVR 19058379 | BoardBoard of Directors | 1999 – 2008 | — | Dissolved |
| CARL BRO DOCUTOUR A/S CVR 19064336 | BoardChairman | 1999 – 2001 | — | Dissolved |
| ICON MEDIALAB A/S CVR 19372286 | BoardBoard of Directors | 2001 – 2005 | — | Dissolved |
| ICON MEDIALAB II A/S CVR 19384985 | BoardBoard of Directors | 2001 – 2002 | — | Dissolved |
| CADWALK ApS CVR 20347988 | BoardBoard of Directors | 2000 – 2001 | — | Dissolved |
| CONSIT A/S CVR 20355980 | BoardBoard of Directors | 2011 – 2013 | — | Dissolved |
| AFV C. HOLDING ApS CVR 21165573 | BoardBoard of Directors | 2006 – 2006 | — | Dissolved |
| NWORKS A/S CVR 21847844 | BoardChairman | 2009 – 2012 | — | Dissolved |
| Devoteam A/S CVR 78068213 | BoardBoard of Directors | 1985 – 1997 | — | Active |
| TRIFORK INFRASTRUCTURE CONSULTING A/S CVR 24209733 | BoardBoard of Directors | 2004 – 2005 | — | Dissolved |
| SUPERTEL DANMARK A/S CVR 24243044 | BoardBoard of Directors | 2007 – 2008 | — | Dissolved |
| JRC HOLDING ApS CVR 24258637 | BoardChairman | 2000 – 2001 | — | Dissolved |
| NAVICOM INTERNATIONAL A/S CVR 25164962 | BoardChairman | 2000 – 2001 | — | Dissolved |
| TELOGIC HOLDING A/S CVR 25212908 | BoardChairman | 2012 – 2013 | — | Dissolved |
| TELELET A/S CVR 25584627 | BoardBoard of Directors | 2004 – 2005 | — | Dissolved |
| SUMMIT CONSULTING A/S CVR 25671678 | BoardChairman | 2004 – 2022 | — | Dissolved |
| SUPERTEL A/S CVR 27195601 | BoardChairman | 2009 – 2009 | — | Dissolved |
| Summit Holding 2017 ApS CVR 38556231 | BoardChairman | 2017 – 2021 | — | Active |
| TIMESLOT ApS CVR 28110197 | BoardChairman | 2008 – 2009 | — | Dissolved |
| GIGACONTENT A/S CVR 28333730 | BoardChairman | 2007 – 2007 | — | Dissolved |
| EASYFLEX IPR ApS CVR 30587073 | BoardChairman | 2007 – 2009 | — | Dissolved |
| SUMMIT CONSULTING HOLDING A/S CVR 30700686 | BoardChairman | 2007 – 2014 | — | Dissolved |
| FISCHER-MADSEN & LORENZ PETERSEN ApS CVR 64522418 | ManagementManagement | 1984 – 1997 | — | Active |
| Selskabet af 01.11.2022 ApS CVR 33784872 | BoardChairman | 2019 – 2022 | — | Dissolved |
| SUMMIT HOLDING 2013 ApS CVR 35517693 | BoardChairman | 2013 – 2017 | — | Active |
| KÆRVEJ EJENDOMSINVEST ApS CVR 24212947 | BoardBoard of Directors | 2000 – 2001 | — | Active |
| NetWyse A/S CVR 38672959 | BoardChairman | 2017 – 2018 | — | Dissolved |
| Swapsafe A/S CVR 38870181 | BoardBoard of Directors | 2017 – 2018 | — | Dissolved |
| MenuPay Holding A/S CVR 41922362 | BoardChairman | 2020 – 2022 | — | Dissolved |
| A2I SYSTEMS A/S CVR 30602730 | BoardBoard of Directors | 2015 – 2015 | — | Active |
| GLOBALCONNECT A/S CVR 26759722 | BoardBoard of Directors | 2003 – 2009 | — | Active |
| SKOVLYST PRODUCTION A/S CVR 30279255 | BoardBoard of Directors | 2008 – 2019 | — | Active |
| KONSENSIT A/S CVR 35514902 | BoardChairman | 2018 – 2024 | — | Dissolved |
| PORTALIZED ApS CVR 27397581 | BoardBoard of Directors | 2010 – 2011 | — | Active |
