Jan Petter Wilhelm Courvoisier Sissener is a private shareholder with an estimated portfolio value of NOK 99.5m. Jan Petter Wilhelm Courvoisier Sissener holds stakes in 4 companies, and roles in several others.

Estimated portfolio value

NOK 99.5m

The sum of estimated values across all known holdings in Norwegian AS/ASA companies

Companies Jan Petter Wilhelm Courvoisier Sissener owns

Company	Stake	Value (est.)
COUSI INVEST AS	50.5%	NOK 96.1m
NORDIC DRIVE AS	20.0%	–
AS KISTEFOS TRÆSLIBERI	0.8%	NOK 3.4m
LYN 1896 AS	0.2%	NOK 28,000

Roles

Styrets leder

4 selskaper

COUSI INVEST AS 993511749

SIRIUS SECURITIES AS 968219448

MELKEVEIEN 15 SAMEIE 834578182

MELKEVEIEN 15 AS 913074300

Varamedlem

3 selskaper

COUSI HOLDING AS 995204061

CASIS AS 995243822

ALEXSIS AS 995282925

Styremedlem

2 selskaper

OSLO TRAVKLUBB 984541775

SISSENER AS 991658807

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 02.09.2026.