John Petter Jahnsen is a private shareholder. John Petter Jahnsen holds a stake in 1 company, and roles in several others.

Companies John Petter Jahnsen owns

Company	Stake
ADJA HOLDING AS	50.0%

Roles

Styrets leder

2 selskaper

ADOLF JAHNSEN AS 979496842

ADJA HOLDING AS 989173316

Daglig leder

1 selskap

ADOLF JAHNSEN AS 979496842

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 03.10.2026.