| Company name | Reg. code |
|---|---|
| GTA INVEST OÜ (former name GTA INVEST) | 12606707 |
| GTM INVEST OÜ | 10718365 |
| GTT INVEST OÜ kustutatud | 12194831 |
| GTR INVEST OÜ kustutatud | 12277422 |
| TARVA-ELEMENT OÜ (former name STA INVEST OÜ) | 14394057 |
| GEGHANIST ZOWUNY OÜ (former name GT Invest Group OÜ) | 12602572 |