Mariann Rossow Sethne is a private shareholder with an estimated portfolio value of NOK 156,000. Mariann Rossow Sethne holds stakes in 3 companies, and roles in several others.

Estimated portfolio value

NOK 156,000

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

Companies Mariann Rossow Sethne owns

Company	Stake	Value (est.)
ROSSOW SETHNE AS	100.0%	NOK 104
ROSEBY EIENDOM AS	33.3%	NOK 144,000
MECSENSE AS	0.1%	–

Roles

Styrets leder

3 selskaper

APOTEKERGATA EIENDOM AS 987314214

ROSEBY EIENDOM AS 926195883

ROSSOW SETHNE AS 928710564

Daglig leder

1 selskap

ROSSOW SETHNE AS 928710564

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.