| Company Name | Type | Status |
|---|---|---|
| ST. SERENO CO., LIMITED | Private company limited by shares | Live |
| SERENO GROUP LIMITED | Private company limited by shares | Live |
| SERENO INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SERENO INVESTMENTS LIMITED | Private company limited by shares | Live |
| Sereno Production Limited | Private company limited by shares | Live |
| Sereno Cloud Solution HK Limited | Private company limited by shares | Live |