Martin Ellefsen Tandberg is a private shareholder with an estimated portfolio value of NOK 3.1m. Martin Ellefsen Tandberg holds a stake in 1 company.

Estimated portfolio value

NOK 3.1m

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

Companies Martin Ellefsen Tandberg owns

Company	Stake	Value (est.)
WELMAX PIPE WELDING AS	30.0%	NOK 3.1m

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