JON BLYTT HAMMARSTRØM is a private shareholder with an estimated portfolio value of NOK 6.6m. JON BLYTT HAMMARSTRØM har eierandeler i 1 selskap, og roller i flere selskaper.

Estimated portfolio value

NOK 6.6m

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

Selskaper JON BLYTT HAMMARSTRØM eier

Company	Stake	Value (est.)
H2 BYGGETEKNIKK AS	78.3%	NOK 6.6m

Roles

Styremedlem

1 selskap

GRAMSTØLEN GRENDALAG SA 814372782

Styrets leder

1 selskap

H2 BYGGETEKNIKK AS 989579592

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 15.06.2026.