| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | Westermann Schulverlag Schweiz AG | 🇨🇭Switzerland | Disuelta | 4/11/2020 – presente |
| Cargo | Westermann Schweiz AG | 🇨🇭Switzerland | Activa | 4/11/2020 – presente |
| Cargo | KLV Verlag AG | 🇨🇭Switzerland | Disuelta | 4/11/2020 – presente |
9/2/2021
appointed
20/1/2021
appointed