Magne Tjønntveit is a private shareholder. Magne Tjønntveit holds a stake in 1 company.

Companies Magne Tjønntveit owns

Company	Stake
ØSTLANDSKE VEI OG BETONG AS	8.8%

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