Sigbjørn Birkeland is a private shareholder. Sigbjørn Birkeland holds stakes in 3 companies, and roles in several others.

Companies Sigbjørn Birkeland owns

Company	Stake
SISI HOLDING AS	29.0%
VALSI AS	11.8%
SISI HOLDING AS	7.0%

Roles

Varamedlem

3 selskaper

HENRIK BIRKELAND HOLDING AS 987890622

BIRK ADVOKATFIRMA AS 925331554

CHRISTIAN BIRKELAND HOLDING AS 987757140

Daglig leder

2 selskaper

SISI HOLDING AS 910593900

VALSI AS 925560537

Styrets leder

2 selskaper

SISI HOLDING AS 910593900

VALSI AS 925560537

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.