John Olaf Tjørn is a private shareholder. John Olaf Tjørn holds stakes in 2 companies, and roles in several others.

Companies John Olaf Tjørn owns

Company	Stake	Value (est.)
JTJ EIENDOM AS	100.0%	–
JTJ RÅDGIVNING AS	60.0%	–

Roles

Daglig leder

3 selskaper

JTJ EIENDOM AS 997857852

ADVIS RÅDGIVNING TJØRN 825234462

JTJ RÅDGIVNING AS 929254058

Styrets leder

2 selskaper

JTJ EIENDOM AS 997857852

JTJ RÅDGIVNING AS 929254058

Innehaver

1 selskap

ADVIS RÅDGIVNING TJØRN 825234462

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.