Karl Petter Aarthun is a private shareholder with an estimated portfolio value of NOK 97.6m. Karl Petter Aarthun holds stakes in 3 companies, and roles in several others.

Estimated portfolio value

NOK 97.6m

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

Companies Karl Petter Aarthun owns

Company	Stake	Value (est.)
AAR-INVEST AS	100.0%	NOK 97.2m
BYRE HYTTESERVICE AS	1.5%	NOK 10,000
CUBERA PRIVATE EQUITY 2021 INVEST AS	0.1%	NOK 386,000

Roles

Styrets leder

1 selskap

AAR-INVEST AS 924500662

Active roles recorded in the Register of Business Enterprises / the Central Coordinating Register

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