Klaus Østervold is a private shareholder. Klaus Østervold holds stakes in 3 companies, and roles in several others.

Companies Klaus Østervold owns

Company	Stake
KLAUS AS	100.0%
MAST JUNIOR AS	33.3%
STOFI AS	4.8%

Roles

Styremedlem

3 selskaper

ECOSUBSEA AS 995632047

MAST JUNIOR AS 989192469

MAST HOLDING AS 989192639

Styrets leder

2 selskaper

KLAUS AS 930316911

993269158 993269158

Daglig leder

1 selskap

KLAUS AS 930316911

Deltaker med fullt ansvar

1 selskap

PARTREDERIET MAST ANS 988185388

Active roles recorded in the Register of Business Enterprises / the Central Coordinating Register

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