| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | Hirzbrunnen-Stiftung | 🇨🇭Svizzera | Active | 23/02/2026 – present |
| Officer | Niggsche Hof AG | 🇨🇭Svizzera | Active | 03/12/2025 – present |
| Officer | Credimex AG | 🇨🇭Svizzera | Active | 06/07/2020 – present |
| Officer | Genossenschaft CVB Immobilien | 🇨🇭Svizzera | Active | 09/04/2021 – present |
| Officer | Kubrix AG | 🇨🇭Svizzera | Active | 05/11/2020 – present |
| Officer | MGB Projects AG | 🇨🇭Svizzera | Dissolved | 06/07/2020 – present |
| Officer | FBB Holding AG | 🇨🇭Svizzera | Active | 25/01/2019 – present |
| Officer | FBB Kies + Beton AG Deisswil | 🇨🇭Svizzera | Active | 30/01/2019 – present |
| Officer | FBB Kalksandstein AG Münchenbuchsee | 🇨🇭Svizzera | Active | 30/01/2019 – present |
| Officer | Ziegelwerke Lauper AG | 🇨🇭Svizzera | Active | 30/01/2019 – present |
| Officer | Ziegelei Ineichen AG | 🇨🇭Svizzera | Active | 29/01/2019 – present |
| Officer | BAMAG Belag + Beton AG | 🇨🇭Svizzera | Active | 29/01/2019 – present |
| Officer | Ziegelei Fisibach AG | 🇨🇭Svizzera | Active | 28/01/2019 – present |
| Officer | FBB Immobilien AG | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | Patronale Personalfürsorgestiftung der Firma Bosshard Transport AG Bauma | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | FBB Frischbeton + Baustoff AG Gossau | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | FBB Frischbeton AG Bäretswil | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | Kies AG | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | Hess AG Erdbau + Recycling | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | FBB Frischbeton + Baustoff AG Hinwil | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | FBB Kies + Beton AG Wald | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | Bosshard Transport AG | 🇨🇭Svizzera | Active | 24/01/2019 – present |
| Officer | Balz Kamm AG | 🇨🇭Svizzera | Active | 03/01/2019 – present |
| Officer | Steinmüri Park AG in Liquidation | 🇨🇭Svizzera | Dissolved | 05/11/2018 – present |
| Officer | Engiadina Real Estate AG | 🇨🇭Svizzera | Active | 02/02/2017 – 09/11/2022 |
| Officer | KEYSTONE GROUP HOLDING AG | 🇨🇭Svizzera | Active | 20/01/2017 – present |
| Officer | Keystone Management AG | 🇨🇭Svizzera | Active | 23/12/2016 – 09/11/2022 |
| Officer | KEYSTONE DEVELOPMENT AG | 🇨🇭Svizzera | Active | 23/12/2016 – 09/11/2022 |
| Officer | HRS Keystone AG | 🇨🇭Svizzera | Active | 22/04/2022 – present |
| Officer | Bimbosan AG | 🇨🇭Svizzera | Dissolved | 01/06/2018 – present |
| Officer | EGSB Roth AG | 🇨🇭Svizzera | Active | 27/04/2021 – present |
| Officer | Keystone Equity AG | 🇨🇭Svizzera | Active | 19/04/2022 – present |
| Officer | Pezula Holding AG | 🇨🇭Svizzera | Active | 12/10/2021 – present |
| Officer | Roth Gerüste AG | 🇨🇭Svizzera | Active | 12/04/2021 – present |
| Officer | Roth Gerüste Holding AG | 🇨🇭Svizzera | Dissolved | 12/04/2021 – present |
| Officer | Keystone Equity II AG | 🇨🇭Svizzera | Active | 19/04/2022 – present |
| Officer | K-Equity AG | 🇨🇭Svizzera | Active | 19/04/2022 – present |
| Officer | Trivor AG | 🇨🇭Svizzera | Active | 10/05/2022 – present |
| Officer | Keystone Constructions AG in Liquidation | 🇨🇭Svizzera | Dissolved | 21/04/2022 – present |
23/02/2026
appointed
03/12/2025
appointed
23/12/2016
appointed