| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | R4 Immo GmbH in Liquidation | 🇨🇭Svizzera | Dissolved | 31/07/2023 – present |
| Officer | Riner Gartenbau AG | 🇨🇭Svizzera | Active | 31/07/2023 – present |
| Officer | Riner Holding AG | 🇨🇭Svizzera | Active | 31/07/2023 – present |
| Officer | SWISSZAUN AG | 🇨🇭Svizzera | Active | 31/07/2023 – present |
| Officer | K. Riner Transport | 🇨🇭Svizzera | Dissolved | 10/02/2023 – present |
| Officer | R2W GU AG | 🇨🇭Svizzera | Active | 29/11/2022 – present |
| Officer | R2W Invest AG | 🇨🇭Svizzera | Active | 21/04/2021 – present |
| Officer | RIWAAG Immobilien AG | 🇨🇭Svizzera | Active | 21/04/2021 – present |
| Officer | ARW GU AG | 🇨🇭Svizzera | Active | 29/11/2016 – present |
06/02/2024
appointed
31/07/2023
appointed
28/10/2016
appointed