| Ettevõtte nimi | Reg. kood |
|---|---|
| OAK HOLDING OÜ | 14049607 |
| OAKLER HOLDING OÜ | 14011355 |
| OAKTREE HOLDING OÜ kustutatud | 12391017 |
| OAKLAND HOLDINGS OÜ | 16408233 |
| RAK HOLDING OÜ | 17026601 |
| OKA HOLDING OÜ | 11211786 |
| F.A.W.E (FIRE AIR WATER EARTH) HOLDING OÜ (endine nimi MAK Holding OÜ) | 14393925 |