Start with the filing type
The form number determines whether you are reading an initial holding, a change in ownership, an annual catch-up, or a proposed sale notice.
form-4
Form 4 (change in ownership)
High signalDefinition
Statement of changes in beneficial ownership. This is the primary real-time product source — it must be filed within two business days of any qualifying transaction. Every transaction in the latest feed is a Form 4 row.
How to read this term
Practical filing context for this specific glossary entryUse identifiers carefully
CIKs, accession numbers, and SEC URLs are durable references. They are safer than company names when matching across systems.
Do not mix surfaces
A Form 144 proposed sale is not the same thing as an executed Form 4 sale. Keep proposed-sale context separate from transaction rows.
Quick facts
- Code
- —
- Priority
- High signal
- Scope
- All Form 4 transaction rows
- Frequency
- Most-filed SEC ownership form
- Slug
form-4