| Company Name | Type | Status |
|---|---|---|
| PORTMARK LIMITED | Private company limited by shares | Dissolved |
| PORTMARK DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| PORTMARK INVESTMENTS LIMITED | Private company limited by shares | Live |
| PORTMARK SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PORTMARK TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |