| Company name | Reg. code |
|---|---|
| SEY OÜ | 16417386 |
| MORE SEY SALES OÜ kustutatud | 12150816 |
| SEYR AGENCY OÜ | 17360102 |
| SEYMI OÜ | 17309782 |
| SEYDAM OÜ kustutatud | 11051940 |
| SEYAAH OÜ | 16459798 |
| SEM SEO OÜ kustutatud | 14912644 |
| SEYDER FINANCE OÜ | 16949172 |
| SEE ON SEE OÜ | 14964084 |
| SET SET STUDIO OÜ | 14532479 |
| KEY OÜ | 10175002 |
| SEE1 OÜ | 14982797 |
| SEF OÜ (former name Svensk-Estniska Fondbolagen OÜ) | 12731826 |
| SEC OÜ | 12700205 |
| HEY OÜ kustutatud | 12535806 |
| SEE OÜ | 12117859 |
| SEO24 OÜ | 16523645 |
| SER OÜ | 14790709 |
| SEV42 OÜ (former name Kraanad Pluss OÜ) | 14735811 |
| SEO OÜ | 11471837 |
| SEO1 OÜ (former name Toprank OÜ) | 14051219 |
| SET OÜ kustutatud | 12037936 |
| SKY 7 OÜ | 17148072 |
| SEK OÜ kustutatud | 10968518 |
| 1SEC OÜ (former name ListUP OÜ) | 14757994 |
| NEY OÜ kustutatud | 12531369 |
| SEA OÜ | 14677143 |
| SEH OÜ | 14568431 |
| GSEY OÜ kustutatud | 14248755 |
| SEE2 OÜ | 16083933 |
| SEI7 OÜ | 14932121 |
| SEM9 OÜ | 16691377 |
| SKY OÜ | 12347648 |
| 5SEC OÜ kustutatud | 12994589 |
| SEL COACHING OÜ | 17200447 |
| SHY BALTIC OÜ | 16772259 |
| ZENITH SEA OÜ (former name Startup Ventures OÜ) | 14588862 |
| SAND & SEA OÜ | 12629967 |
| SEO SEAL OÜ | 16768387 |
| SKY INVEST OÜ (former name Mobiilne autopesula OÜ) | 14051981 |
| PROVENTUM KEY OÜ | 16971510 |
| SET GRUPP OÜ | 12760118 |
| LUXURY KEY OÜ | 16776553 |
| SKY INVESTEERINGUD OÜ | 12083706 |
| GRANDIS SKY OÜ | 16146651 |
| SEM NELI OÜ kustutatud | 14028657 |
| DEEP SEA OÜ | 17272636 |
| SEE REEDE OÜ (former name Giraffe Property OÜ) | 12453735 |
| MO NEY OÜ | 16304995 |
| SEA ADVENTURE OÜ | 14039388 |