SIERO AS
Signals
- Negativ egenkapital 2025 Bokført egenkapital er negativ (−7,5 mill kr).
- Driftsunderskudd 2025 Siste driftsresultat er negativt (−14,8 mill kr).
SIERO AS is registered as a limited company in Trondheim, Trøndelag with organisation number 922168245. The business is classified under construction of residential and non-residential buildings (NACE 41.000). The company was incorporated in 2019 and has 11 registered employees. Registered share capital is NOK 50,000, divided into 500 shares. The company's stated purpose is: “Entreprenørvirksomhet og dertil hørende aktivitet og forbindelse. Bygge og anleggsvirksomhet, oppføring av bygninger, utvikling av byggeprosjekter. Samt tjenester knyttet til drift av eiendom.”. The most recent filed accounts, for the 2025 financial year, show NOK 44.2m in revenue and NOK −14.8m in operating profit.
Key figures · 2025
Financial health · 2025
Solidity capped at Weak because equity is below NOK 100,000.
Who owns SIERO AS?
SIERO AS has 3 registered shareholders:
- SIERO GRÜNDER AS 90.0%
- NORDIQ CONSULTING AS 5.0%
- VALDE INVEST AS 5.0%
Frequently asked questions about SIERO AS
Who owns SIERO AS?
SIERO GRÜNDER AS is the largest registered owner, with 90.0%.
What is the revenue of SIERO AS?
SIERO AS had revenue of NOK 44.2m in 2025.
Who is the general manager of SIERO AS?
Kenneth Gjessingen is registered as general manager of SIERO AS.
Where is SIERO AS based?
SIERO AS has its business address in Heimdal.
Property
11 companies are registered at this address.
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.