Jon Magne Sem is a private shareholder. Jon Magne Sem holds a stake in 1 company, and roles in several others.

Companies Jon Magne Sem owns

Company	Stake
SEMMEC AS	100.0%

Roles

Daglig leder

1 selskap

SEMMEC AS 925069353

Styrets leder

1 selskap

SEMMEC AS 925069353

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.