Thorbjørn Back is a private shareholder. Thorbjørn Back holds a stake in 1 company, and roles in several others.

Companies Thorbjørn Back owns

Company	Stake
EXTRA HOLDING AS	70.0%

Roles

Styrets leder

2 selskaper

EXTRA HOLDING AS 989082620

JELLESTADVEIEN EIENDOM AS 930055395

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.