| Company name | Reg. code |
|---|---|
| OLDBOY OÜ (former name Oldboy UÜ) | 14876204 |
| OLDBAC OÜ (former name Amper Engineering OÜ) | 12198102 |
| OLDEY OÜ kustutatud | 14861542 |
| MADBOY OÜ | 11743000 |
| WOODBOY OÜ | 14770500 |
| SADBOY OÜ | 17035238 |
| ODBO OÜ kustutatud | 14409844 |
| OLOY VENTURES OÜ | 17315357 |