Skip links
Companies
Norway › SERO AS

SERO AS

Join Stock Company Active

in

Registration No.
912228738
Incorporation Date
1963-06-17
Company Type
Join Stock Company
Address
BILLINGSTAD, Norway
Website
www.sero.no/

SERO AS is a Join Stock Company registered in Norway under 912228738, with active status. The company was incorporated on 17 June 1963 and lists its registered address as BILLINGSTAD, Norway. 5 shareholders are on record for SERO AS, including at least one natural person recorded as a direct holder; the filing carries no beneficial-ownership flag, so that holder is noted here as a recorded shareholder rather than a confirmed ultimate beneficial owner (UBO).

Data Provenance
This record is sourced directly from official government registries.

View data sources →

We don’t stop at registry data.
Every company record is enriched with additional intelligence:
  • Company fundamentals
  • Corporate linkage & group structures
  • Digitized company financials
  • Firmographics — websites, social profiles, revenue and employee estimates

View full data dictionary →

Shareholders

5

Five shareholders are currently on record for SERO AS, held on the Aksjonærregisteret (Shareholder Register), filed under reporting obligations to Norway's tax administration.

The largest of these is Knut Weydahl Eldjarn, holding 50.5% — a majority holding — followed by Astrid Torunn Eldjarn at 22.5%; the remaining 3 shareholders shown hold smaller stakes.

Every shareholder shown is an individual, recorded as a direct holder at this level; the record carries no UBO/PSC flag, so beneficial-owner status is not confirmed here.

Shareholder Type Holding Source Document
Knut Weydahl Eldjarn 50.5%
Astrid Torunn Eldjarn 22.5%
Eileen Eldjarn 9%
Camilla Eldjarn Huitfeldt 9%
Knut Erik Weydahl Eldjarn 9%

View all shareholders & beneficial ownership
Full cap table, ownership percentages, and ultimate beneficial owners resolved down to the natural person.

View all shareholders →

Officers

5

The Director of SERO AS on record is Geir Lippestad; 5 officers are shown here.

The register reports 23 officers in total, including past appointments, though only the 5 most relevant records are shown here.

Management authority at SERO AS sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.

The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.

GL
Geir Lippestad ACTIVE

Residence
🇳🇴 Norway
Occupation
Director

EE
Eileen Eldjarn Rognstad ACTIVE

Residence
🇳🇴 Norway
Occupation
Director

SH
Sara Hannisdal ACTIVE

Residence
🇳🇴 Norway
Occupation
Board Member

KE
Knut Erik Weydahl Eldjarn ACTIVE

Residence
🇳🇴 Norway
Occupation
Board Member

KE
Knut Erik Weydahl Eldjarn RESIGNED

Residence
🇳🇴 Norway
Occupation
Deputy Head

View all officers & directors
Complete appointment history, representation authority, and officer-level filings across jurisdictions.

View all officers →

Group Structure

SERO AS has no recorded parent company — it sits at the top of its own group structure, with 3 subsidiaries recorded beneath it across 4 jurisdictions. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.

Those 3 subsidiaries span Norway, China, Sweden, Finland jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.

Ultimate HQ
SERO AS
Norway
Sairuo Biotechnology (beijing) Co., Ltd.
ChinaCN 110000450310989

Sero As
SwedenSE 5020649215

Sero AS
FinlandFI 30865005

Explore the full group structure
Map the complete corporate hierarchy: parent companies, subsidiaries, and cross-border ownership chains.

View full group structure →

Need the full UBO picture on SERO AS?

Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring.

Frequently Asked Questions

Who owns SERO AS?

Five shareholders are currently on record for SERO AS, held on the Aksjonærregisteret (Shareholder Register), filed under reporting obligations to Norway's tax administration. The largest of these is Knut Weydahl Eldjarn, holding 50.5% — a majority holding — followed by Astrid Torunn Eldjarn at 22.5%; the remaining 3 shareholders shown hold smaller stakes. Every shareholder shown is an individual, recorded as a direct holder at this level; the record carries no UBO/PSC flag, so beneficial-owner status is not confirmed here.

Who is SERO AS's UBO (Ultimate Beneficial Owner)?

At least one shareholder recorded for SERO AS is a natural person. The record carries no dedicated UBO/PSC flag, so that holder is stated here as a recorded shareholder rather than a confirmed Ultimate Beneficial Owner (UBO).

How many shareholders does SERO AS have on record?

5 shareholders are shown on record for SERO AS.

Is SERO AS still an active company?

SERO AS's status is listed as active.

When was SERO AS incorporated?

SERO AS was incorporated on 17 June 1963.

What is SERO AS's registered address?

The registered address on file for SERO AS is BILLINGSTAD, Norway.

What legal structure is SERO AS registered as?

SERO AS is registered as a Join Stock Company in Norway.

Who are the officers/directors of SERO AS?

The Director of SERO AS on record is Geir Lippestad; 5 officers are shown here. Management authority at SERO AS sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.

Does SERO AS have a parent company or subsidiaries?

SERO AS has no recorded parent company — it sits at the top of its own group structure, with 3 subsidiaries recorded beneath it across 4 jurisdictions. Those 3 subsidiaries span Norway, China, Sweden, Finland jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.

Can Zavia monitor changes to SERO AS's ownership over time?

This profile reflects a point-in-time snapshot. Zavia's monitoring API can track changes to SERO AS's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.

Can I access SERO AS's data through an API?

Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Norway, so records like SERO AS's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.

This website uses cookies to improve your web experience.