Øystein Sjaastad Andreassen is a private shareholder. Øystein Sjaastad Andreassen holds a stake in 1 company.

Companies Øystein Sjaastad Andreassen owns

Company	Stake
SJAAND INVEST AS	47.4%

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