Ivar Stemshaug is a private shareholder. Ivar Stemshaug holds a stake in 1 company, and roles in several others.

Companies Ivar Stemshaug owns

Company	Stake
PORTIV AS	100.0%

Roles

Styremedlem

3 selskaper

HAVIAR AS 914567718

STEMNA AS 925814857

MONTAN AS 925814970

Daglig leder

1 selskap

PORTIV AS 925815055

Styrets leder

1 selskap

PORTIV AS 925815055

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.