Mariusz Jan Kowalski is a private shareholder with an estimated portfolio value of NOK 527,000. Mariusz Jan Kowalski holds stakes in 2 companies, and roles in several others.

Estimated portfolio value

NOK 527,000

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

Companies Mariusz Jan Kowalski owns

Company	Stake	Value (est.)
MKB EIENDOM HADSEL AS	50.9%	NOK 527,000
MKB BYGG AS	50.9%	–

Roles

Daglig leder

2 selskaper

MKB BYGG AS 912208885

MKB EIENDOM HADSEL AS 831253142

Styremedlem

2 selskaper

MKB BYGG AS 912208885

MKB EIENDOM HADSEL AS 831253142

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.