Tone Karstensen is a private shareholder with an estimated portfolio value of NOK 1.8m. Tone Karstensen holds a stake in 1 company.

Estimated portfolio value

NOK 1.8m

The sum of estimated values across all known holdings in Norwegian AS/ASA companies

Companies Tone Karstensen owns

Company	Stake	Value (est.)
ROY ROGNAN INVEST AS	8.0%	NOK 1.8m

Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 02.09.2026.