Steinar Sønsteby is a private shareholder with an estimated portfolio value of NOK 32.0m. Steinar Sønsteby holds stakes in 2 companies, and roles in several others.

Estimated portfolio value

NOK 32.0m

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

Companies Steinar Sønsteby owns

Company	Stake	Value (est.)
SS HOLDING AS	28.6%	NOK 16.0m
SS HOLDING AS	28.6%	NOK 16.0m

Roles

Styrets leder

3 selskaper

SS HOLDING AS 988393827

ATEA AS 976239997

ELMERA GROUP ASA 920153577

Daglig leder

1 selskap

ATEA ASA 920237126

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.