Tonje Kristiansen is a private shareholder. Tonje Kristiansen holds a stake in 1 company.

Companies Tonje Kristiansen owns

Company	Stake
BYGGRENT-DIN RENHOLDSPARTNER AS	50.0%

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