Ruben Køste Ringset is a private shareholder. Ruben Køste Ringset holds a stake in 1 company.

Companies Ruben Køste Ringset owns

Company	Stake
CYBERNETICA HOLDING AS	3.7%

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