| Company name | Reg. code |
|---|---|
| WASEP OÜ | 16734425 |
| WASAP OÜ kustutatud | 12431886 |
| WASEI BALTIC OÜ kustutatud (former name We2Work OÜ) | 14613093 |
| WASP CONSULT OÜ | 12067392 |
| WASP ENTERPRISES OÜ (former name Wasp OÜ) | 11931078 |
| WASP WELD OÜ | 16528080 |
| WASP PROJECT OÜ (former name Rex Management OÜ) | 11303525 |
| WASP ASSETS OÜ | 10828757 |
| WASE GRUPP OÜ | 16721187 |
| DATA WASP OÜ | 16347473 |
| HYDROPLAN OÜ (former name WASE Projekt OÜ) | 16796797 |
| MASEP OÜ | 14386322 |
| WISEP2P OÜ | 16676797 |