| Company | Role | Period | Ownership | Status |
|---|
| Company | Role | Period | Ownership | Status |
|---|---|---|---|---|
| COMPACT DATA A/S CVR 10040493 | BoardBoard of Directors | 1999 – 2002 | — | Dissolved |
| Firma Peter Hartmann CVR 10177154 | OtherStakeholder | 2002 – 2020 | — | Active |
| GYLDENDAL AKADEMISK A/S CVR 14246983 | BoardBoard of Directors | 2000 – 2003 | — | Dissolved |
| ANALYTICAL INSTRUMENTS A/S CVR 15148845 | BoardBoard of Directors | 2007 – 2008 | — | Dissolved |
| ANDR. FRED. HØST & SØN A/S CVR 18254018 | BoardBoard of Directors | 1935 – 1987 | — | Dissolved |
| SAXO DANMARK INTERNETBOGHANDEL I/S CVR 20408499 | OtherUnofficial title | 1997 – 2000 | — | Active |
| HANS REITZELS FORLAG A/S CVR 42951218 | BoardBoard of Directors | 1962 – 1999 | — | Dissolved |
| ERHVERVSØKONOMISK FORLAG S/I CVR 17220756 | BoardBoard of Directors | 2003 – 2008 | — | Active |
| G.E.C. GADS FORLAG A/S CVR 36424311 | ManagementManagement | 2003 – 2005 | — | Active |
| JOHN WILEY & SONS A/S CVR 24207854 | BoardBoard of Directors | 2001 – 2002 | — | Active |
| Person | Role | Shared companies | Profile |
|---|---|---|---|
| Chairman | 2companies | View profile | |
| Chief Executive Officer | 2companies | View profile | |
| Management | 2companies | View profile | |
| Board of Directors | 2companies | View profile | |
| Board of Directors | 1company | View profile |