What is an SEC accession number?
An accession number is the unique ID EDGAR assigns to each filing, in the form 0000320193-26-000010: the filer agent’s CIK, the year and a sequence number. It identifies the filing in every SEC URL and data set, so keep it with any value you extract.
The first ten digits are the CIK of whoever submitted the filing, which can be a filing agent rather than the company itself.
Request with your API key
curl "https://sec-api.dev/api/v1/filings?cik=320193&limit=3" \
-H "Authorization: Bearer $SEC_API_KEY"Read more
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Written by sec-api.dev, updated 9 November 2026. Numbers recompute from SEC data every six hours.
Plain-text version for agents and LLMs: /questions/what-is-an-accession-number.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.