Brit Marie Fossmark Ertenstein is a private shareholder with an estimated portfolio value of NOK 849,000. Brit Marie Fossmark Ertenstein holds a stake in 1 company, and roles in several others.

Estimated portfolio value

NOK 849,000

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

Companies Brit Marie Fossmark Ertenstein owns

Company	Stake	Value (est.)
BK INVEST AS	50.0%	NOK 849,000

Roles

Styremedlem

1 selskap

MARK HOLDING AS 996304787

Styrets leder

1 selskap

BK INVEST AS 932738988

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.