SERO AS
SERO AS is registered as a limited company in Asker, Akershus with organisation number 912228738. The business is classified under manufacture of pharmaceutical preparations (NACE 21.200). The company was incorporated in 1963 and has 75 registered employees. Registered share capital is NOK 10.0m, divided into 100000 shares. The company's stated purpose is: “Produksjon, distribusjon og salg av kontrollsera, reagenser og instrumenter til bruk i analysevirksomhet i medisinske og andre laboratorier.”.
Who owns SERO AS?
SERO AS has 5 registered shareholders:
- KNUT WEYDAHL ELDJARN 50.5%
- ASTRID TORUNN ELDJARN 22.5%
- KNUT ERIK WEYDAHL ELDJARN 9.0%
- EILEEN ELDJARN 9.0%
- CAMILLA ELDJARN HUITFELDT 9.0%
Frequently asked questions about SERO AS
Who owns SERO AS?
KNUT WEYDAHL ELDJARN is the largest registered owner, with 50.5%.
Who is the general manager of SERO AS?
Jens Stefan Nicolai Kernstock is registered as general manager of SERO AS.
Where is SERO AS based?
SERO AS has its business address in Billingstad.
Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 15.06.2026.