Oskar Birger Johan Johansen is a private shareholder. Oskar Birger Johan Johansen holds a stake in 1 company.

Companies Oskar Birger Johan Johansen owns

Company	Stake
ATELIER GRØSTAD ARKITEKTUR AS	1.2%

Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 03.10.2026.