| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Cargo | Hirzbrunnen-Stiftung | 🇨🇭Switzerland | Activa | 23/2/2026 – presente |
| Cargo | Niggsche Hof AG | 🇨🇭Switzerland | Activa | 3/12/2025 – presente |
| Cargo | Credimex AG | 🇨🇭Switzerland | Activa | 6/7/2020 – presente |
| Cargo | Genossenschaft CVB Immobilien | 🇨🇭Switzerland | Activa | 9/4/2021 – presente |
| Cargo | Kubrix AG | 🇨🇭Switzerland | Activa | 5/11/2020 – presente |
| Cargo | MGB Projects AG | 🇨🇭Switzerland | Disuelta | 6/7/2020 – presente |
| Cargo | FBB Holding AG | 🇨🇭Switzerland | Activa | 25/1/2019 – presente |
| Cargo | FBB Kies + Beton AG Deisswil | 🇨🇭Switzerland | Activa | 30/1/2019 – presente |
| Cargo | FBB Kalksandstein AG Münchenbuchsee | 🇨🇭Switzerland | Activa | 30/1/2019 – presente |
| Cargo | Ziegelwerke Lauper AG | 🇨🇭Switzerland | Activa | 30/1/2019 – presente |
| Cargo | Ziegelei Ineichen AG | 🇨🇭Switzerland | Activa | 29/1/2019 – presente |
| Cargo | BAMAG Belag + Beton AG | 🇨🇭Switzerland | Activa | 29/1/2019 – presente |
| Cargo | Ziegelei Fisibach AG | 🇨🇭Switzerland | Activa | 28/1/2019 – presente |
| Cargo | FBB Immobilien AG | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | Patronale Personalfürsorgestiftung der Firma Bosshard Transport AG Bauma | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | FBB Frischbeton + Baustoff AG Gossau | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | FBB Frischbeton AG Bäretswil | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | Kies AG | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | Hess AG Erdbau + Recycling | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | FBB Frischbeton + Baustoff AG Hinwil | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | FBB Kies + Beton AG Wald | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | Bosshard Transport AG | 🇨🇭Switzerland | Activa | 24/1/2019 – presente |
| Cargo | Balz Kamm AG | 🇨🇭Switzerland | Activa | 3/1/2019 – presente |
| Cargo | Steinmüri Park AG in Liquidation | 🇨🇭Switzerland | Disuelta | 5/11/2018 – presente |
| Cargo | Engiadina Real Estate AG | 🇨🇭Switzerland | Activa | 2/2/2017 – 9/11/2022 |
| Cargo | KEYSTONE GROUP HOLDING AG | 🇨🇭Switzerland | Activa | 20/1/2017 – presente |
| Cargo | Keystone Management AG | 🇨🇭Switzerland | Activa | 23/12/2016 – 9/11/2022 |
| Cargo | KEYSTONE DEVELOPMENT AG | 🇨🇭Switzerland | Activa | 23/12/2016 – 9/11/2022 |
| Cargo | HRS Keystone AG | 🇨🇭Switzerland | Activa | 22/4/2022 – presente |
| Cargo | Bimbosan AG | 🇨🇭Switzerland | Disuelta | 1/6/2018 – presente |
| Cargo | EGSB Roth AG | 🇨🇭Switzerland | Activa | 27/4/2021 – presente |
| Cargo | Keystone Equity AG | 🇨🇭Switzerland | Activa | 19/4/2022 – presente |
| Cargo | Pezula Holding AG | 🇨🇭Switzerland | Activa | 12/10/2021 – presente |
| Cargo | Roth Gerüste AG | 🇨🇭Switzerland | Activa | 12/4/2021 – presente |
| Cargo | Roth Gerüste Holding AG | 🇨🇭Switzerland | Disuelta | 12/4/2021 – presente |
| Cargo | Keystone Equity II AG | 🇨🇭Switzerland | Activa | 19/4/2022 – presente |
| Cargo | K-Equity AG | 🇨🇭Switzerland | Activa | 19/4/2022 – presente |
| Cargo | Trivor AG | 🇨🇭Switzerland | Activa | 10/5/2022 – presente |
| Cargo | Keystone Constructions AG in Liquidation | 🇨🇭Switzerland | Disuelta | 21/4/2022 – presente |
23/2/2026
appointed
3/12/2025
appointed
23/12/2016
appointed