| Company name | Reg. code |
|---|---|
| M. HULSING HOLDING OÜ | 16885213 |
| M8M HOLDING OÜ | 14871164 |
| M HOLDING OÜ | 16394998 |
| M2 HOLDING OÜ | 16863631 |
| M7 HOLDING OÜ | 16964467 |
| M.O.M. HOLDING OÜ kustutatud | 10966287 |
| M&O HOLDING OÜ kustutatud (former name D&M Holding) | 12769757 |
| L.M. HOLDING OÜ | 14058730 |
| C2M HOLDING OÜ (former name Anagram Investments OÜ) | 14533065 |
| 2M4R HOLDING OÜ | 14271145 |
| M HOLDING CORP OÜ (former name E&M APPLICATIONS OÜ) | 14195616 |
| M.S. HOLDING OÜ | 10646795 |
| G&M HOLDING OÜ | 17165142 |
| M.T. HOUSING OÜ | 14750213 |
| K.T.M HOLDING OÜ | 17278998 |
| L.M.V. HOLDING OÜ | 14678562 |
| L.M.G HOLDING OÜ | 16654784 |
| M.A.C.F. HOLDING OÜ | 14430589 |
| MR HOLDINGS OÜ (former name M.R. Holding OÜ) | 12375633 |
| M7 ADVISORY OÜ (former name M7 EST HOLDING OÜ) | 14339860 |
| CARMARKS GRUPP OÜ (former name GoodWork Holding OÜ) | 16397146 |
| KRISTINE KONSULTATSIOONID OÜ (former name Bliss Holding OÜ) | 12138985 |
| HK MANAGEMENT OÜ (former name H.E.M Holding OÜ) | 16172619 |