Arne Malm Brundtland is a private shareholder. Arne Malm Brundtland holds stakes in 3 companies.

Companies Arne Malm Brundtland owns

Company	Stake
PIERO AS	31.0%
GIOTTO AS	23.7%
ABG SUNDAL COLLIER HOLDING ASA	0.1%

Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 03.10.2026.