| Company name | Reg. code |
|---|---|
| ALTUS OÜ | 16620153 |
| ALTUS TEHNO OÜ | 11593434 |
| ALTUS HALDUS OÜ | 16696707 |
| ALTUS TEENUS OÜ | 12080470 |
| ALTUS CENTAURI OÜ | 17371918 |
| OVISION OÜ (former name ALTUS TRADING OÜ) | 14102394 |
| GAS ENERGY SOLUTIONS OÜ (former name ALTUS EST OÜ) | 14837368 |
| ALTUSA BALTIC OÜ kustutatud | 16556225 |
| ALTUM OÜ | 11544217 |
| ALTOS OÜ | 11588568 |
| ALTEUS OÜ | 14258222 |
| ALTS OÜ (former name Aloverse OÜ) | 14133839 |
| ALTUM RE OÜ | 12922704 |
| ALTUM CAPITAL OÜ | 12852949 |
| ALTUM GROUP OÜ (former name KutuzovArt OÜ) | 14343985 |
| ALTIUS TRADE OÜ | 16637389 |
| ALTOS DESIGNS OÜ | 17254029 |
| ALTIUS KR OÜ kustutatud | 12414190 |
| ALTOS ENGINEERING OÜ | 12494740 |
| ALTIUS ADVISORY OÜ (former name QX Trade Group OÜ) | 12051066 |
| ALTUM MEREAGENTUUR OÜ | 12875146 |
| ALTUM ENGINEERING OÜ | 12892378 |
| ALTOS TEED OÜ | 12967894 |
| PT ALTUM OÜ (former name PulsTech Altum OÜ) | 14839114 |
| ALTEUS ESTONIA OÜ | 12634905 |
| ALTIUS CAPITAL OÜ (former name Altius Energia OÜ) | 11951112 |
| AD ALTUM OÜ kustutatud | 11080060 |
| ALTIUS TS OÜ | 10077146 |
| ALTUM INVEST OÜ | 12889875 |
| ALTAS EESTI OÜ kustutatud | 12630717 |
| ALTUM FINANCE OÜ | 12857303 |
| ALTIUS GROUP OÜ | 17125600 |
| ALTIUS CONSULT PARTNERS OÜ | 11518094 |
| ALTIUS BUSINESS SERVICES OÜ | 10376674 |
| NUTIMAJA OÜ (former name Altius Project OÜ) | 11338481 |
| ALITUS OÜ | 17116341 |
| ALNUS OÜ | 16022759 |
| PALTUS OÜ kustutatud | 12870462 |
| APTUS OÜ kustutatud | 12611186 |
| SALTUS OÜ | 10664830 |
| ALGUS OÜ | 10693582 |
| ALNUS OÜ kustutatud | 10031763 |
| FELIS ASTUS OÜ | 14430388 |
| ALNUS KONSULTATSIOONID OÜ | 14967289 |
| ACTUS STUDIO OÜ kustutatud | 11606042 |
| ÕIGUSBÜROO ALGUS OÜ | 14667894 |
| ALBUS NOX OÜ kustutatud | 14142904 |
| JAAN AMTUS OÜ kustutatud | 10097408 |
| ALIUS MARKETING OÜ kustutatud (former name OÜ Alius Marketing) | 12215148 |
| MELILOTUS ALBUS OÜ | 12025301 |