Mats Walle Sivertsen is a private shareholder. Mats Walle Sivertsen holds a stake in 1 company.

Companies Mats Walle Sivertsen owns

Company	Stake
HYDROWATT AS	0.3%

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