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Øystein John Haslum
Øystein John Haslum is a private shareholder with an estimated portfolio value of NOK 12.8m. Øystein John Haslum holds stakes in 2 companies, and roles in several others.
Estimated portfolio value
NOK 12.8m
The sum of estimated values across all known holdings in Norwegian AS/ASA companies
Companies Øystein John Haslum owns
| Company | Stake | Value (est.) |
|---|---|---|
| GIEFFNES AS | 61.0% | NOK 6.2m |
| GJØNNES AS | 29.6% | NOK 6.7m |
Roles
Styrets leder
7 selskaper
BÆRUM LANDBRUKSFORENING
998321522
SABONA STI
985463395
GJØNNES AS
998575524
GJØNNES GÅRD AS
988689351
GIEFFNES AS
998575532
GREEN ENERGY AS
916047096
SAGA WOOD HOLDING AS
914286611
Styremedlem
1 selskap
FLAEN TREINDUSTRIER AS
832541052
Varamedlem
1 selskap
SAMEIET FREDERIK STANGSGATE 41
983940714
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.