Marte Greftegreff Nøstberg is a private shareholder with an estimated portfolio value of NOK 23.9m. Marte Greftegreff Nøstberg holds stakes in 3 companies.

Estimated portfolio value

NOK 23.9m

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

Companies Marte Greftegreff Nøstberg owns

Company	Stake	Value (est.)
WATT HOLDING AS	33.3%	NOK 23.8m
TORKILDSEN HOLDING AS	22.5%	NOK 106,000
TORKILDSEN HOLDING AS	2.5%	NOK 12,000

Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 02.09.2026.