John Petter Martinussen is a private shareholder with an estimated portfolio value of NOK 12.2m. John Petter Martinussen holds a stake in 1 company.

Estimated portfolio value

NOK 12.2m

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

Companies John Petter Martinussen owns

Company	Stake	Value (est.)
GRAAKAMMEN CONSULTING AS	100.0%	NOK 12.2m

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