| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | Egli Immobilien und Projektierungs AG | 🇨🇭Switzerland | Activa | 19/12/2017 – presente |
| Cargo | NSM Engineering AG | 🇨🇭Switzerland | Disuelta | 17/3/2016 – presente |
| Cargo | B. Steinmann AG in Liquidation | 🇨🇭Switzerland | Disuelta | 19/12/2017 – presente |
| Cargo | BREBAU Holding AG in Liquidation | 🇨🇭Switzerland | Liquidación | 19/12/2017 – presente |
| Cargo | Bretscher Immobilien AG in Liquidation | 🇨🇭Switzerland | Liquidación | 19/12/2017 – presente |
| Cargo | Opus AG Bauunternehmung | 🇨🇭Switzerland | Activa | 19/12/2017 – presente |
| Cargo | Künzli Immobilien AG | 🇨🇭Switzerland | Activa | 20/12/2017 – presente |
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