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Marianne Mangschou Rieber
Marianne Mangschou Rieber is a private shareholder with an estimated portfolio value of NOK 292.8m. Marianne Mangschou Rieber holds stakes in 5 companies, and roles in several others.
Estimated portfolio value
NOK 292.8m
The sum of estimated values across all known holdings in Norwegian AS/ASA companies
Companies Marianne Mangschou Rieber owns
| Company | Stake | Value (est.) |
|---|---|---|
| MANGSCHOU AS | 88.0% | NOK 1.5m |
| MTG HOLDING AS | 77.8% | NOK 226.5m |
| MTG HOLDING AS | 22.2% | NOK 64.7m |
| PRIVATE EQUITY GROWTH 2012 AS | 0.3% | – |
| MARITIME OPPORTUNITIES AS | 0.2% | NOK 14,000 |
Roles
Styremedlem
8 selskaper
USHOLMVIKA SKJÆRGÅRDSHYTTER
924977744
TORDIS OG FRITZ C RIEBER'S STIFTELSE
977152410
BERGEN LINEDANCE SYD
937179251
AKVARIETS VENNER
987192526
STIFTELSEN DET NORSKE ARBORET
971350008
ZEE PLOEG AS
995542870
MTG HOLDING AS
987588071
RIEBER & SØN AS
930131148
Daglig leder
2 selskaper
MANGSCHOU AS
978693156
MTG HOLDING AS
987588071
Styrets leder
1 selskap
MANGSCHOU AS
978693156
Active roles recorded in the Register of Business Enterprises / the Central Coordinating Register
Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 02.09.2026.