| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | Microtunnel.ch AG | 🇨🇭Svizzera | Active | 11/10/2024 – present |
| Officer | Witschi Immobilien AG | 🇨🇭Svizzera | Active | 20/06/2019 – present |
| Officer | Solit Energie AG | 🇨🇭Svizzera | Active | 02/12/2022 – present |
| Officer | Witschi Group AG | 🇨🇭Svizzera | Active | 27/11/2018 – present |
| Officer | Rudolf Steiner Schule Oberaargau | 🇨🇭Svizzera | Active | 07/11/2023 – present |
| Officer | Stiftung für Alterswohnungen in Langenthal | 🇨🇭Svizzera | Active | 24/08/2017 – present |
| Officer | Aare Uferpark AG | 🇨🇭Svizzera | Dissolved | 09/06/2021 – present |
| Officer | Wohnbaugesellschaft Langeten AG | 🇨🇭Svizzera | Active | 27/10/2020 – present |
| Officer | Witschi Group AG | 🇨🇭Svizzera | Dissolved | 20/06/2019 – present |
| Officer | Witschi Baumanagement AG | 🇨🇭Svizzera | Active | 20/06/2019 – present |
| Officer | Witschi Detox AG | 🇨🇭Svizzera | Active | 11/08/2017 – present |
| Officer | Patronale Stiftung der Firma Friedrich Witschi AG | 🇨🇭Svizzera | Active | 27/11/2018 – present |
| Officer | Michu Witschi GmbH | 🇨🇭Svizzera | Active | 27/09/2017 – present |
| Officer | Aare Uferpark GmbH | 🇨🇭Svizzera | Active | 18/12/2024 – present |
11/10/2024
appointed
24/09/2024
appointed
27/09/2017
appointed