| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | Microtunnel.ch AG | 🇨🇭Switzerland | Activa | 11/10/2024 – presente |
| Cargo | Witschi Immobilien AG | 🇨🇭Switzerland | Activa | 20/6/2019 – presente |
| Cargo | Solit Energie AG | 🇨🇭Switzerland | Activa | 2/12/2022 – presente |
| Cargo | Witschi Group AG | 🇨🇭Switzerland | Activa | 27/11/2018 – presente |
| Cargo | Rudolf Steiner Schule Oberaargau | 🇨🇭Switzerland | Activa | 7/11/2023 – presente |
| Cargo | Stiftung für Alterswohnungen in Langenthal | 🇨🇭Switzerland | Activa | 24/8/2017 – presente |
| Cargo | Aare Uferpark AG | 🇨🇭Switzerland | Disuelta | 9/6/2021 – presente |
| Cargo | Wohnbaugesellschaft Langeten AG | 🇨🇭Switzerland | Activa | 27/10/2020 – presente |
| Cargo | Witschi Group AG | 🇨🇭Switzerland | Disuelta | 20/6/2019 – presente |
| Cargo | Witschi Baumanagement AG | 🇨🇭Switzerland | Activa | 20/6/2019 – presente |
| Cargo | Witschi Detox AG | 🇨🇭Switzerland | Activa | 11/8/2017 – presente |
| Cargo | Patronale Stiftung der Firma Friedrich Witschi AG | 🇨🇭Switzerland | Activa | 27/11/2018 – presente |
| Cargo | Michu Witschi GmbH | 🇨🇭Switzerland | Activa | 27/9/2017 – presente |
| Cargo | Aare Uferpark GmbH | 🇨🇭Switzerland | Activa | 18/12/2024 – presente |
11/10/2024
appointed
24/9/2024
appointed
27/9/2017
appointed