| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | Rosenburg AG | 🇨🇭Svizzera | Active | 20/02/2026 – present |
| Officer | Emil-Halter-Stiftung für Jugendförderung im Thurgau | 🇨🇭Svizzera | Active | 06/01/2023 – present |
| Officer | Stiftung Ernst Witzig | 🇨🇭Svizzera | Dissolved | 07/08/2020 – present |
| Officer | Ekkharthof-Verein | 🇨🇭Svizzera | Active | 09/12/2019 – present |
| Officer | Witzig Alteco Digital Services AG | 🇨🇭Svizzera | Active | 23/07/2018 – present |
| Officer | Witzig The Office Company AG | 🇨🇭Svizzera | Dissolved | 23/06/2020 – present |
| Officer | Witzig The Office Company AG in Liquidation | 🇨🇭Svizzera | Liquidation | 18/06/2020 – present |
| Officer | Ergodata AG | 🇨🇭Svizzera | Active | 19/12/2019 – present |
| Officer | Wohlfahrtsfonds Witzig Gruppe | 🇨🇭Svizzera | Dissolved | 21/11/2019 – present |
20/02/2026
appointed
06/01/2023
appointed
21/12/2018
appointed