| Company name | Reg. code |
|---|---|
| RSA2 OÜ | 17177561 |
| RSA GRUPP OÜ kustutatud | 12571073 |
| RSA INVEST OÜ (former name OÜ Paivarin) | 12783639 |
| RSA EUROPA OÜ | 16904376 |
| RSA EHITUS OÜ | 17128158 |
| RSA HOLDING OÜ (former name Shaftmodule OÜ) | 14604842 |
| RSA TEENUSED OÜ | 12602661 |
| RSA LOGISTICS OÜ | 14468184 |
| RSA CONSULTING OÜ kustutatud | 16862471 |
| RSAP OÜ | 12797647 |
| RSAUTO OÜ kustutatud | 12008780 |
| RSAUTO24 OÜ | 16169735 |
| RSAPPS NORDICS OÜ | 16972432 |
| RSALUOKS INVESTMENTS OÜ | 12532995 |
| RBA OÜ | 16518472 |
| RRA OÜ kustutatud | 14599163 |
| PSA OÜ kustutatud | 12634709 |
| RHA OÜ | 17115718 |
| ERSA OÜ | 14106133 |
| RAS OÜ | 12005770 |
| RÄSA OÜ | 12327315 |
| IRSA OÜ | 16898500 |
| DSA OÜ | 12091502 |
| RMA OÜ (former name Saare Hambakliinik OÜ) | 16628108 |
| REA OÜ kustutatud | 12309044 |
| MSA OÜ | 12104696 |
| RLA OÜ | 14844807 |
| 123OSA OÜ | 12621598 |
| RSC OÜ | 10452447 |
| RSE OÜ | 14864388 |
| RESA OÜ | 12578767 |
| ISA OÜ kustutatud | 11038900 |
| QSA OÜ (former name SEO Konsult OÜ) | 12606723 |
| RSG OÜ | 12414296 |
| ARSA OÜ | 14653311 |
| HSA OÜ kustutatud | 11965723 |
| OSA KAKS OÜ | 14430307 |
| MSA OVERSEAS OÜ | 14379598 |
| PSA EVENTS OÜ | 16598956 |
| ISA ISRE OÜ | 14041787 |
| RESA SOLUTIONS OÜ | 17216738 |
| RMA CONSULTANCIES OÜ | 17163083 |
| RJA MEDIA OÜ | 16904100 |
| RIA STANTEKS OÜ | 11242522 |
| KSA LOGICA OÜ kustutatud | 14385943 |
| ASA HOLDING OÜ | 16757828 |
| THINK ROSA OÜ kustutatud | 14936923 |
| RMA BIOTECH OÜ | 14787682 |
| VALERI OSA OÜ | 14387681 |
| CSA PARTNERS OÜ | 11169009 |