| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | Egli Immobilien und Projektierungs AG | 🇨🇭Svizzera | Active | 19/12/2017 – present |
| Officer | NSM Engineering AG | 🇨🇭Svizzera | Dissolved | 17/03/2016 – present |
| Officer | B. Steinmann AG in Liquidation | 🇨🇭Svizzera | Dissolved | 19/12/2017 – present |
| Officer | BREBAU Holding AG in Liquidation | 🇨🇭Svizzera | Liquidation | 19/12/2017 – present |
| Officer | Bretscher Immobilien AG in Liquidation | 🇨🇭Svizzera | Liquidation | 19/12/2017 – present |
| Officer | Opus AG Bauunternehmung | 🇨🇭Svizzera | Active | 19/12/2017 – present |
| Officer | Künzli Immobilien AG | 🇨🇭Svizzera | Active | 20/12/2017 – present |
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