MS
Martin Siem
Martin Siem is a private shareholder with an estimated portfolio value of NOK 23.7m. Martin Siem holds stakes in 4 companies, and roles in several others.
Estimated portfolio value
NOK 23.7m
The sum of estimated values across all known holdings in Norwegian AS/ASA companies
Companies Martin Siem owns
| Company | Stake | Value (est.) |
|---|---|---|
| BOULDER HOLDING AS | 100.0% | NOK 23.6m |
| AQUA BIO TECHNOLOGY ASA | 1.7% | NOK 175,000 |
| ODDEN SMÅBÅTHAVN AS | 1.5% | – |
| CULTURA SPAREBANK | 0.1% | – |
Roles
Styrets leder
16 selskaper
KIRKEHAUGSVEIEN 9 AS
930755419
M3 ATLAS BOLIGER 3 AS
922737118
M3 NÆRING AS
923352457
BOULDER HOLDING AS
987998709
MØRSTAD SENTER AS
987927003
EXPO PROPERTY HANDEL 1 AS
822715842
JERPEFARET 12 AS
927049538
KONGSVINGER EIENDOMSINVEST AS
928647102
M3 BOLIGER 2 AS
918753060
MÅSAN AS
984049900
M3 NOREFJELL AS
923603107
HAVNEGÅRDEN INVEST AS
930739766
EXPO PROPERTY AS
923802398
DALSVEIEN UTVIKLING AS
925101400
EXPO HOLDING AS
925330647
ARNULF STRØM EIENDOM AS
916362455
Styremedlem
13 selskaper
M3 ATLAS UTVIKLING AS
924428422
M3 HOLDING AS
997052226
M3 MANAGEMENT AS
991206841
M3 BOLIGER AS
917135177
M3 BOLIGER INVEST AS
921527837
HANEKLEIVA EIENDOM AS
920512593
HVASSER TENNISKLUBB
996054276
M2 NÆRINGSUTVIKLING AS
926838229
OREBERG AS
823433972
JETCARRIER AS
923803386
NEBULA EIENDOM AS
923378375
EXPO PROPERTY MANAGEMENT AS
933767418
M3 UTVIKLING AS
918884424
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.