| Company name | Reg. code |
|---|---|
| DOSSA OÜ | 17466665 |
| NOSSA OÜ | 12915779 |
| BOSSA OÜ | 10946310 |
| FOSSA OÜ | 12802360 |
| BOSSA SAILING OÜ | 11196971 |
| WOSSA CORONOU OÜ (former name Epiflow OÜ) | 14491906 |
| FOSSA ELECTRIC OÜ (former name WebPark OÜ) | 14733404 |
| FOSSA FORMALIS OÜ | 11179597 |
| BRO FOSSA OÜ kustutatud | 11699019 |
| ARANCIA ROSSA OÜ | 14392877 |
| PILLOLA ROSSA OÜ kustutatud | 16240502 |
| RÕSSA PÕLD JA METS OÜ | 14290022 |
| ORMSÖ SHEEP OÜ (former name Ossa OÜ) | 12843755 |