Private · Person · registered roles
Jon Blytt Hammarstrøm
Active in 2 companiesChair · Board memberLærdal & Bergen
↳ Brreg · company_people
Role timeline
H2 Byggeteknikk AS
Styrets leder
Gramstølen Grendalag SA
Styremedlem
since 2024 · bars start at the registry's change date — full periods are not published
Across their companies2 · rolled up
Combined revenue
kr 13.2M +
Tenders won
0
Status
all active
Reach
2 industries
Brreg roles + Regnskap · rolled up across their companies — includes historical roles
Reach by industry
Other activities of other membership organisations
1
Civil engineering activities
1
Recent role changes
2026-05-12Became Styremedlem — Gramstølen Grendalag SA
2024-09-25Became Styrets leder — H2 Byggeteknikk AS
Signals
Multiple boardscurrent board roles at 2+ companies
computed from Brreg roles