Marcin Jakub Sieradzan is a private shareholder. Marcin Jakub Sieradzan holds a stake in 1 company, and roles in several others.

Companies Marcin Jakub Sieradzan owns

Company	Stake	Value (est.)
GRANU AS	50.0%	–

Roles

Styrets leder

1 selskap

GRANU AS 933216926

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.