Øyvind Grønn Madshus is a private shareholder with an estimated portfolio value of NOK 3.6m. Øyvind Grønn Madshus holds stakes in 2 companies, and roles in several others.

Estimated portfolio value

NOK 3.6m

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

Companies Øyvind Grønn Madshus owns

Company	Stake	Value (est.)
WAU I/O AS	45.0%	NOK 3.6m
HALVING AS	0.9%	NOK 52,000

Roles

Styremedlem

2 selskaper

WAU I/O AS 915380433

GREEN CONCEPT 922894027

Styrets leder

1 selskap

HALVING AS 920354513

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.