Private · Person · registered roles
Mariusz Kostrzewa
Active in 4 companiesCEO · ChairStavanger
↳ Brreg · company_people
Role timeline
Mariusz Kostrzewa
Innehaver
Mariusz Kostrzewa
Daglig leder
Kostrzewa Mariusz Prokalk
Innehaver
Mmbygg AS
Styrets leder
Kostrzewa AS
Daglig leder
Kostrzewa AS
Styrets leder
since 2017 · bars start at the registry's change date — full periods are not published
Across their companies4 · rolled up
Combined revenue
— +
Tenders won
0
Status
all active
Reach
4 industries
Brreg roles + Regnskap · rolled up across their companies — includes historical roles
Reach by industry
Development of building projects
1
Other technical consultancy
1
Joinery installation
1
Recent role changes
2026-07-22Became Styrets leder — Kostrzewa AS
2026-07-22Became Daglig leder — Kostrzewa AS
2026-02-06Became Styrets leder — Mmbygg AS
2025-02-06Became Innehaver — Kostrzewa Mariusz Prokalk
2013-06-28Became Daglig leder — Mariusz Kostrzewa
Signals
Multiple boardscurrent board roles at 2+ companies
New CEOcurrent CEO role registered < 6 months ago
computed from Brreg roles