Jan Einar Karlstad is a private shareholder. Jan Einar Karlstad holds a stake in 1 company.

Companies Jan Einar Karlstad owns

Company	Stake
TRØMBORG VENTILASJONSPARTNERE AS	2.9%

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