Jostein Hamnvik is a private shareholder with an estimated portfolio value of NOK 3.0m. Jostein Hamnvik holds stakes in 2 companies, and roles in several others.

Estimated portfolio value

NOK 3.0m

The sum of estimated values across all known holdings in Norwegian AS/ASA companies

Companies Jostein Hamnvik owns

Company	Stake	Value (est.)
RISBERG AS	38.3%	NOK 1.8m
FURSTÅL AS	22.5%	NOK 1.2m

Roles

Styremedlem

2 selskaper

RISBERG AS 977198712

FURSTÅL AS 938737509

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 02.09.2026.