| Company name | Reg. code |
|---|---|
| OSIRIS OÜ | 17340591 |
| OSIRIS GROUP OÜ kustutatud | 11253425 |
| SANCTUM OSIRIS OÜ | 14810978 |
| E-QUALITY CONSULTING & ADVISORY OÜ (former name Isis & Osiris OÜ) | 16643533 |
| OSIIRIS OÜ kustutatud | 10136812 |
| OSIISO OÜ | 14817756 |
| OSIRA OÜ kustutatud | 14260779 |
| OSILIA TAKSO OÜ | 12694864 |
| OSILIA SHIPPING OÜ | 11180442 |
| OSILIA TRADING OÜ kustutatud | 14149332 |
| OSILIA INVEST OÜ | 11118242 |
| OSILIA JAHUTUS OÜ | 10961485 |
| OSIAS TRANSPORT AND LOGISTICS OÜ (former name Damascus Food OÜ) | 16049284 |
| SIRIS OÜ (former name Siris Kindlustusmaakler OÜ) | 12908816 |
| SIRIS VÄLIMEEDIA OÜ | 14266167 |
| SIRIS GYM OÜ | 14825690 |
| ONIRIC OÜ | 16145739 |
| ASPIRIS OÜ kustutatud (former name System Merchants ES OÜ) | 12826892 |
| NOSTRIS OÜ | 12823511 |
| FEIRIS OÜ | 17381928 |
| SIURIS OÜ | 17053182 |
| ASIRAS OÜ | 16987770 |
| NAIRIS OÜ | 14474351 |
| SOTIRIS OÜ kustutatud | 16620408 |
| OSTRIK OÜ | 16367332 |
| SIRIUS OÜ | 12978455 |
| OLIRISE OÜ | 17113932 |
| ISIDIS OÜ | 14985608 |
| OSTRAS OÜ | 17077314 |
| OPIBIS OÜ | 14924877 |
| ASIRIUS OÜ kustutatud | 14652120 |
| OBERIS OÜ | 10122141 |
| SAIRIS OÜ | 16434278 |
| OTSKRIS OÜ | 14173951 |
| SIRIOS OÜ | 11677941 |
| ASARIS OÜ | 14028976 |
| MAIRIS OÜ | 16867637 |
| ORIRI OÜ kustutatud | 16749639 |
| OORIS OÜ | 10290246 |
| AIRIS OÜ | 11954582 |
| KIRIS OÜ | 16697575 |
| SIRIUS PARTNERS OÜ | 12157864 |
| OLORIS KONSULTATSIOONID OÜ | 12597500 |
| SIRIUS INVEST OÜ | 11176529 |
| TOMIRIS VOKANZIH OÜ | 16825636 |
| RASIRIS TECH OÜ | 14996032 |
| SIRIUS ENERGY OÜ | 14663106 |
| SIRIUS HOLDING OÜ | 16214559 |
| SIRIUS ADVISORY OÜ | 17097877 |
| SIRIUS CONSULTING OÜ | 11557616 |