| Rol | Empresa | País | Estado | Período |
|---|---|---|---|---|
| Persona con control significativo | SIGMA PROJECT MANAGEMENT SERVICES LTD | 🇬🇧United Kingdom | Solicitud de baja | 22/6/2024 – presente |
| Persona con control significativo | SIGMA PROCUREMENT SERVICES LTD | — | Disuelta | 22/6/2024 – presente |
| Persona con control significativo | SIGMA SURVEYING SERVICES LIMITED | — | Activa | 26/6/2024 – presente |
| Persona con control significativo | SIGMA PROJECT CONTROLS LTD | — | Disuelta | 26/6/2024 – presente |
| Persona con control significativo | SIGMA RAIL LTD | — | Disuelta | 26/6/2024 – presente |
| Persona con control significativo | SIGMA QUANTITY SURVEYING SERVICES LTD | — | Disuelta | 26/6/2024 – presente |
6/4/2016
appointed