| Company name | Reg. code |
|---|---|
| AMPERMANN OÜ | 17387144 |
| AMPERSAND OÜ | 10809122 |
| HAMPELMANN OÜ kustutatud | 12569062 |
| ALBERMANN OÜ (former name CorporateLegal OÜ) | 14823509 |
| APERMAN OÜ (former name Wooh OÜ) | 16249457 |
| OPPERMANN CONSULTING OÜ | 14636948 |
| AKKERMANN CONSULTING OÜ | 17244189 |