| Company Name | Type | Status |
|---|---|---|
| Serotonin Co Limited | Private company limited by shares | Live |
| SEROTONIN GEAR CO., LIMITED | Live | |
| SEROTONIN OUTDOORS CO., LIMITED | Live | |
| SEROTRADE LIMITED | Private company limited by shares | Dissolved |
| SEROTROPIN LIMITED | Private company limited by shares | Live Commenced dormancy on 09-Mar-2010 |