| SIDER COMPANY LIMITED | Private company limited by shares | Dissolved |
| SIDER ASIA LIMITED | Private company limited by shares | Live |
| SIDER DIGITAL COMPONENTS LIMITED | Private company limited by shares | Dissolved |
| SIDER INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| NEO TECH SIDER LIMITED | Private company limited by shares | Live |
| SIDERA INVESTMENT LIMITED | Private company limited by shares | Live |
| SiderBlue Inc Limited | Private company limited by shares | Live |
| Sidere Limited | Private company limited by shares | Live |
| Sidere Bioscience Limited | | Live |
| SIDEREAL LIMITED | Private company limited by shares | Dissolved |
| Sidereal Limited | Private company limited by shares | Live |
| Sidereal Creative Limited | Private company limited by shares | Live |
| Siderian Resource Capital Limited | Private company limited by shares | Live |
| SIDERIS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SIDERONE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SIDEROY LIMITED | Private company limited by shares | Dissolved |