Mads Østby is a private shareholder with an estimated portfolio value of NOK 2.3m. Mads Østby holds stakes in 3 companies.

Estimated portfolio value

NOK 2.3m

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

Companies Mads Østby owns

Company	Stake	Value (est.)
GNISTEN INSTALLASJON AS	13.0%	NOK 1.6m
ELEKTRO UNION AS	2.8%	NOK 525,000
FULTRON AS	2.6%	NOK 193,000

Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 02.09.2026.