| Company name | Reg. code |
|---|---|
| GK OÜ | 16411395 |
| GK PRO OÜ kustutatud (former name Z Service OÜ) | 12622072 |
| GK-AUTO OÜ | 14135577 |
| GK MOTOR OÜ | 17172952 |
| GK TRADE OÜ | 11244805 |
| GK MEDIA OÜ | 16783659 |
| GK VISION OÜ | 16398743 |
| GK STUDIO OÜ | 16227763 |
| SMARTY GK OÜ kustutatud | 10908870 |
| GK ENIGMA OÜ | 14395545 |
| GK EHITUS OÜ | 11234971 |
| GK BEAUTY OÜ | 14060520 |
| GK SYSTEMS OÜ | 16467444 |
| GK CAPITAL OÜ | 12413977 |
| GK FINANTS OÜ | 12822730 |
| GK HOLDING OÜ | 11739398 |
| GK SERVICE OÜ | 14213395 |
| GK TRADING OÜ | 14035677 |
| GK CREATION OÜ | 11491900 |
| GK STRATEGY OÜ | 17053012 |
| GK FORESTRY OÜ | 14326314 |
| GK AUTOVEOD OÜ kustutatud | 14203057 |
| GK PUIDUÄRI OÜ | 12077479 |
| GK MARKETING OÜ kustutatud | 11980792 |
| GK MANAGEMENT OÜ | 16322295 |
| GK CONSULTING OÜ | 14682865 |
| GK VARAHALDUS OÜ | 14305737 |
| GK INVESTMENTS OÜ | 11414733 |
| GK FINANTSEERINGUD OÜ | 11190742 |
| GK KONSULTATSIOONID OÜ kustutatud | 12354223 |
| GK TRANS GROUP OÜ | 14653740 |
| GK TRADE EXPORT OÜ kustutatud | 12718228 |
| BALTIC FOREST GK OÜ kustutatud | 14166230 |
| GK TRADE LUMENIX OÜ kustutatud (former name OÜ Irinfo) | 11300923 |
| GK-GRUPI VALDUSE OÜ | 11685053 |
| GK-INVESTMENT GROUP OÜ | 12544426 |
| GK ILU JA TERVIS OÜ | 16057321 |
| GK TRADE GLUING SOLUTIONS OÜ | 12585951 |
| JIWAN KAMARANGATALI OÜ kustutatud (former name GK Scoring OÜ) | 16372086 |
| LIVONIA HOLDINGS OÜ (former name GK Invest OÜ) | 14348221 |
| MAJAKLIIMA OÜ (former name OÜ GK Auctores) | 12601822 |
| GKO OÜ | 17392375 |
| GKT OÜ | 14751201 |
| GKA OÜ | 17239596 |
| GKIT OÜ | 16929850 |
| GKUUSK OÜ | 14143654 |
| GKSALES OÜ | 14985991 |
| GKIDEAL OÜ (former name SCI-SHARK OÜ) | 16805542 |
| GKPHOTO OÜ | 14662710 |
| GKG GROUP OÜ | 16619670 |