John Tanke Sviland is a private shareholder. John Tanke Sviland holds stakes in 2 companies, and roles in several others.

Companies John Tanke Sviland owns

Company	Stake
GBBT AS	100.0%
BMAX AS	67.0%

Roles

Daglig leder

3 selskaper

BMAX AS 921859791

GBBT AS 997265025

ABCB AS 921643810

Styrets leder

3 selskaper

BMAX AS 921859791

GBBT AS 997265025

ABCB AS 921643810

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.