Jon Ivar Trøstheim is a private shareholder. Jon Ivar Trøstheim holds a stake in 1 company.

Companies Jon Ivar Trøstheim owns

Company	Stake
TRØSTHEIM ANLEGG & EIENDOM AS	100.0%

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