Haakon Jonhaugen is a private shareholder. Haakon Jonhaugen holds a stake in 1 company.

Companies Haakon Jonhaugen owns

Company	Stake
ROMERIKE RØRLEGGERBEDRIFT AS	20.0%

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