| Company name | Reg. code |
|---|---|
| SGO OÜ | 12181679 |
| V&M TOOTED OÜ (former name SGO Grupp OÜ) | 12858320 |
| SGE OÜ | 14841476 |
| EGO65 OÜ | 12132646 |
| SEGO OÜ | 12360212 |
| SEO24 OÜ | 16523645 |
| SEO OÜ | 11471837 |
| SEO1 OÜ (former name Toprank OÜ) | 14051219 |
| SOO OÜ | 12138028 |
| SJÖ OÜ | 17057582 |
| SPO OÜ kustutatud (former name Wild Trade OÜ) | 12918275 |
| IGO24/7 OÜ | 14205504 |
| SGH OÜ | 14832158 |
| FGO OÜ | 12836672 |
| SMO OÜ | 16049327 |
| STO OÜ | 16221329 |
| SAO OÜ | 14678332 |
| SEO SEAL OÜ | 16768387 |
| SGC INNOVATIONS OÜ | 16883869 |
| MUSTIKA SEO OÜ | 17438746 |
| SEO CREW OÜ kustutatud | 14355238 |
| SPO AIR OÜ | 14463198 |
| SEO PARTNER OÜ kustutatud | 12109009 |
| SFO SERVICES OÜ | 14510785 |
| SEO MARKETING OÜ | 12357995 |
| DUTCHESS SEO OÜ | 17154747 |
| SKO DIGITAL OÜ | 16719897 |
| SHO GROUP OÜ | 17084099 |
| KGO INVEST OÜ | 16280361 |
| SGA REKLAAM OÜ kustutatud | 10422972 |
| SOO TRADING OÜ | 14271273 |
| SIIL & SOO OÜ kustutatud | 12718754 |
| SKO LIFE OÜ | 16188773 |
| SOGO INTERNATIONAL OÜ kustutatud (former name Laava Partners OÜ) | 12905284 |
| SOG TRADING OÜ kustutatud | 12024767 |
| ANTARES SKO OÜ | 11659149 |
| RANKIFYX-SEO OÜ | 17165679 |
| SEO CORP OÜ kustutatud | 16116182 |
| ZANNE SOO OÜ | 11302922 |
| SSO OPTICS OÜ | 17308021 |
| VALL & SOO OÜ | 12670562 |
| SOO PUHKEMAJAD OÜ | 12035038 |
| SAGO & VEZI OÜ kustutatud | 10722190 |
| PAADERMAA SOO OÜ | 12924873 |
| AGO PÕLLUD OÜ | 11447907 |
| AGO ANTIIK OÜ (former name AGO katused OÜ) | 14326053 |
| LOCALRANK - SEO OÜ (former name VividionLabs OÜ) | 16718900 |
| HRE SOO OÜ | 17371226 |
| SGG INVEST OÜ | 16774643 |
| SOGO SYSTEMS OÜ | 12890111 |