| DUF 2001 A/S CVR 12583605 | BoardBoard of Directors | 1988 – 1992 | — | Dissolved |
| AUTOGRAPH INTERNATIONAL AF 1992 A/S CVR 12695136 | BoardBoard of Directors | 1988 – 1998 | — | Dissolved |
| KIRKE VÆRLØSEVEJ 26A CVR 13413037 | OtherStakeholder | 1988 – 2017 | — | Active |
| EJENDOMMEN KIRKE VÆRLØSEVEJ 32/ JAN TØPHOLM M FL CVR 16856754 | OtherStakeholder | 1987 – 2016 | — | Active |
| Vp-Arkaden nr 4 v/Søren Erik Westermann CVR 18232200 | OtherStakeholder | 1984 – 2020 | — | Active |
| CYBERDAN A/S CVR 20043938 | BoardBoard of Directors | 1997 – 2002 | — | Dissolved |
| TØPHOLM & WESTERMANN HOLDING A/S CVR 20205407 | BoardBoard of Directors | 1997 – 2001 | — | Dissolved |
| PV17 ApS CVR 26204690 | BoardBoard of Directors | 2001 – 2005 | — | Dissolved |
| SEWES ApS CVR 26204712 | ManagementManagement | 2005 – 2022 | — | Dissolved |
| JALICHAN ApS CVR 26204739 | BoardBoard of Directors | 2001 – 2005 | — | Dissolved |
| WESTERMANN A/S CVR 28516584 | BoardChairman | 2005 – 2022 | — | Dissolved |
| WSAUD A/S CVR 34615500 | ManagementManagement | 2013 – 2016 | — | Active |
| GSA-Holding ApS CVR 38269747 | BoardBoard of Directors | 2016 – 2017 | — | Dissolved |
| SWH 2025 ApS CVR 45850110 | ManagementChief Executive Officer | 2025 – 2026 | — | Dissolved |
| HEARING INSTRUMENT MANUFACTURERS SOFTWARE ASSOCIATION A/S CVR 19647196 | BoardBoard of Directors | 2003 – 2023 | — | Dissolved |
| HIMPP A/S CVR 19319075 | BoardBoard of Directors | 1997 – 2022 | — | Active |
| ApS KBIL 38 NR. 1627 CVR 15701331 | BoardBoard of Directors | 1991 – 2015 | — | Active |
| WS Audiology A/S CVR 15771100 | BoardBoard of Directors | 1991 – 2019 | — | Active |
| TØPHOLM & WESTERMANN ApS CVR 60756112 | BoardChairman | 1976 – 2001 | — | Dissolved |
| CYBERDAN 1985 A/S CVR 75635613 | BoardBoard of Directors | 1984 – 2004 | — | Dissolved |
| HIMSA II A/S CVR 26929466 | BoardBoard of Directors | 2018 – 2023 | — | Active |
| GSA Helsinge ApS CVR 39927225 | BoardBoard of Directors | 2018 – 2020 | — | Active |