TITLE: How to Read SEC Accession Numbers and Filing Index Pages
SEO DESCRIPTION: Learn what SEC accession numbers mean, how EDGAR filing index pages work, and how to use them to find main filings, exhibits, amendments and source documents.
How to Read SEC Accession Numbers and Filing Index Pages
Every SEC EDGAR filing has an accession number. This number is one of the most useful identifiers in SEC research because it points to a specific filing submission, not just a company, form type or filing date. If the CIK identifies the filer, the accession number identifies the exact filing package submitted to the SEC.
An accession number usually looks like this: 0000320193-24-000123. The first part is often connected to the filer or filing agent, the middle part reflects the filing year, and the final part is a sequence number. Researchers do not need to memorize every technical detail, but they should understand that the full accession number is unique to that filing submission.
The accession number is especially useful when a company files many documents on the same day. For example, a company may file a Form 8-K, several exhibits, an amended filing or a prospectus supplement close together. Searching by company name alone may show many results, but the accession number takes you to the exact filing package.
The EDGAR filing index page is the control center for a filing. It usually lists the accession number, form type, filing date, report date, company name, CIK, file number and document table. The document table shows the main filing and any attached exhibits. For serious review, the index page is often more useful than opening only the first document.
The main document is usually the filing itself, such as a 10-K, 8-K, S-1, DEF 14A, Form D or 13F. But the attached documents can be just as important. Exhibits may include credit agreements, merger agreements, underwriting agreements, bylaws, employment contracts, certifications, auditor consents, trust documents, prospectus supplements or XBRL files. Many key facts are found in the exhibits rather than the main filing text.
Filing index pages also help distinguish originals from amendments. If the form type includes “/A,” it usually means the filing is an amendment. The accession number of the amendment will be different from the original filing’s accession number. When reviewing amended filings, compare the accession numbers, dates, form types and document contents so you do not confuse the original filing with the corrected version.
The accession number can also help build clean citations and internal records. If you are saving research notes, publishing a review or tracking a company’s SEC history, recording the accession number makes the source easier to verify later. A title such as “Form 8-K filed in May” is vague; an accession number points to the exact EDGAR submission.
A good SEC research workflow is to find the company CIK, filter by form type and date, open the filing index page, record the accession number, then review the main document and exhibits. This method keeps the research tied to a specific source and reduces the risk of citing the wrong filing.
Key points:
- A SEC accession number identifies a specific EDGAR filing submission.
- The CIK identifies the filer, while the accession number identifies the filing package.
- Accession numbers are useful when a company has many filings or amendments.
- The filing index page lists the main filing, exhibits and filing metadata.
- Exhibits often contain contracts, agreements and other important source documents.
- Amended filings have their own accession numbers.
- Recording accession numbers makes SEC research easier to verify later.
- A careful review should include both the filing index and the attached documents.