| Company name | Reg. code |
|---|---|
| KITADIL OÜ | 16907086 |
| KITAI BEAUTY OÜ (former name Alina Beatiful OÜ) | 14192187 |
| BITADEL OÜ kustutatud | 14268775 |
| VITADIS OÜ | 10501714 |
| CITADEL HOLDING OÜ (former name Dellago OÜ) | 14144599 |
| CITADEL TRADING OÜ kustutatud | 12083646 |
| DIGITAL CITADEL OÜ | 17198118 |
| CITADEL INVEST GRUPP OÜ kustutatud | 12376288 |
| SYNHOLDINGS OÜ (former name Citadel Consulting OÜ) | 12754164 |
| DATA SOLUTIONS OÜ (former name Datavalve OÜ) | 14055418 |