Mariann Rossow Sethne is a private shareholder. Mariann Rossow Sethne holds stakes in 3 companies, and roles in several others.

Companies Mariann Rossow Sethne owns

Company	Stake
ROSSOW SETHNE AS	100.0%
ROSEBY EIENDOM AS	33.3%
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 03.10.2026.