SIDCO AS
SIDCO AS is registered as a limited company in Oslo, Oslo with organisation number 937987447. The business is classified under construction of residential and non-residential buildings (NACE 41.000). The company was incorporated in 1985. Registered share capital is NOK 1.3m, divided into 12700 shares. The company's stated purpose is: “Boligbygging og entreprenørvirksomhet samt konsulentvirksomhet, investering, finansiering og alt som står i forbindelse hermed.”. The most recent filed accounts, for the 2025 financial year, show NOK 1.7m in revenue and NOK 1.3m in operating profit.
Key figures · 2025
Financial health · 2025
Who owns SIDCO AS?
SIDCO AS has 19 registered shareholders:
- SIGMUND BJØRGUM 16.6%
- JON BJØRGUM 16.1%
- KAREN CECILIE BJØRGUM MØLLER 16.1%
- ERIK BJØRGUM 16.1%
- KAREN CECILIE BJØRGUM MØLLER 4.5%
- ERIK BJØRGUM 4.5%
- JON BJØRGUM 4.5%
- PEDER BJØRGUM 3.1%
- JENS BJØRGUM MØLLER 3.1%
- MAUD FRANCESCA ALFSTAD BJØRGUM 3.1%
- ALEKSANDER BJØRGUM MØLLER 3.1%
- MAXIMILIAN FLORIAN ALFSTAD BJØRGUM 3.1%
- SIGMUND BJØRGUM 2.4%
- SIGMUND BJØRGUM 0.2%
- PEDER BJØRGUM 0.1%
- MAUD FRANCESCA ALFSTAD BJØRGUM 0.1%
- JENS BJØRGUM MØLLER 0.1%
- MAXIMILIAN FLORIAN ALFSTAD BJØRGUM 0.1%
- ALEKSANDER BJØRGUM MØLLER 0.1%
Which companies does SIDCO AS own?
SIDCO AS holds stakes in 3 companies:
- GAMLE BORGENVEI 20 INVEST AS 0.3%
- LOSBY GODS EIENDOM AS 0.2%
- LOSBY GOLFPARK AS 0.1%
Frequently asked questions about SIDCO AS
Who owns SIDCO AS?
SIGMUND BJØRGUM is the largest registered owner, with 16.6%.
What is the revenue of SIDCO AS?
SIDCO AS had revenue of NOK 1.7m in 2025.
Who is the general manager of SIDCO AS?
Sigmund Bjørgum is registered as general manager of SIDCO AS.
Where is SIDCO AS based?
SIDCO AS has its business address in Oslo.
Property
The address this company is registered at, from the company register and matched against the cadastre. It does not say who owns the property — a company may be a tenant, and the address is often its accountant's. Source: Brønnøysundregistrene and © Kartverket.
Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 02.09.2026.