Documentation

An API for Swedish company data

Retrieve registry data, accounts, workplaces, insider trading, short positions and trademarks through a single REST API.

Insider trading is checked every minute and short positions every three minutes. Check data freshness live without an API key.

Read the quickstart API reference Plans and pricing

Base URL: /api/v1
Format: JSON
Access: Bearer key
Mode: Read-only

Example

Give a registration number to retrieve the company's core data as a structured JSON response.

Request

curl "https://firmainfo.se/api/v1/companies/5560125790" \
  -H "Authorization: Bearer $FIRMAINFO_API_KEY"

Response

{
  "id": "5560125790",
  "registration_number": "556012-5790",
  "identity_type": "organisation_number",
  "name": "Aktiebolaget Volvo",
  "legal_form": "AB",
  "status": "active",
  "registration_date": "1915-05-05",
  "deregistration_date": null,
  "business_description": "Bolaget skall - direkt eller genom dotterbolag - bedriva verksamhet …",
  "address": {
    "street": "",
    "care_of": "",
    "postal_code": "405 08",
    "city": "GÖTEBORG",
    "country": "SE"
  },
  "industry_codes": ["70100"],
  "primary_industry_code": "70100",
  "tax_registrations": { "f_tax": true, "vat": true, "employer": true },
  "publicity": "public_listed",
  "listing_status": "listed",
  "listing_venue": "Nasdaq Stockholm (Large Cap)",
  "lei": "549300HGV012CNC8JD22",
  "has_financials": true,
  "last_updated_at": "2026-07-11T04:48:45.490Z"
}

Get started

Quickstart

Create a key and make your first company lookup.

Authentication

Read about API keys, scopes and the terms for protected data.

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Code examples

Examples of lookups, error handling and pagination in several languages.

OAS

OpenAPI

Use the specification for client generation, validation and internal tooling.

What you can build

Faster business sign-up

Validate a registration number and fill in the company's name, address, tax details and status automatically.

Better targeting

Filter on industry, location, size and financial values, then enrich only the companies that matter.

Financial decision support

Follow performance across several financial years with reported results, balance sheet items, ratios and notes.

Continuous market monitoring

Catch new insider transactions, changed short positions and trademark events inside your own workflows.

Common calls

See the full reference

GET /companies Search companies Search and filter companies by location, industry, size and financial values. GET /companies/{company_id} Company information Core company data: name, status, address, industry and tax registration. GET /companies/{company_id}/financials Annual accounts Retrieve accounts across several financial years, at the level of detail you choose. GET /market/insider-transactions Insider transactions Search purchases, sales and other PDMR transactions from the Swedish FSA. GET /market/short-positions Short positions Search reported net short positions from the Swedish FSA. GET /trademarks Search trademarks Search Swedish and international trademarks by name, status, class and date.

Sources and update frequency

Update frequency varies between sources. The status resource shows when each source was last checked.

Source	Data	Typical update
Finansinspektionen	Insider trading	Every minute
Finansinspektionen	Short positions	Every three minutes
Bolagsverket	Annual reports and new registrations	Hourly
Bolagsverket	Full bulk registry, bankruptcies and liquidations	Weekly, Mondays
SCB	Industries, size classes and contact fields	Every six hours to weekly
SCB	Workplaces	On import, no promised cadence
PRV	Trademarks and registered events	On import, no promised cadence

Check current data freshness