Yann Kvalheim Kieffer is a private shareholder. Yann Kvalheim Kieffer holds a stake in 1 company.

Companies Yann Kvalheim Kieffer owns

Company	Stake
METAITO AS	0.4%

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