Tor Øystein Osa Michalsen is a private shareholder with an estimated portfolio value of NOK 4.2m. Tor Øystein Osa Michalsen holds a stake in 1 company, and roles in several others.

Estimated portfolio value

NOK 4.2m

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

Companies Tor Øystein Osa Michalsen owns

Company	Stake	Value (est.)
ØYE-HOLDING AS	100.0%	NOK 4.2m

Roles

Styremedlem

3 selskaper

AGDER TRESENTER 971332379

MASSIVTRE HOLDING AS 929557425

MASSIVTRE AS 916602197

Daglig leder

2 selskaper

ØYE-HOLDING AS 916545118

MASSIVTRE AS 916602197

Styrets leder

2 selskaper

OPPLÆRINGSKONTORET FOR BYGGFAGENE I AGDER (OKAB) 971328401

ØYE-HOLDING AS 916545118

Varamedlem

2 selskaper

GROOSBYGG AS 991864342

GITMARK HOLDING AS 991883509

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.