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.
A filing that reports beneficial ownership or intended sale activity. The initial product centers on Forms 3, 4, and 5, with existing Form 144 support retained in ingestion.
The form number determines whether you are reading an initial holding, a change in ownership, an annual catch-up, or a proposed sale notice.
CIKs, accession numbers, and SEC URLs are durable references. They are safer than company names when matching across systems.
A Form 144 proposed sale is not the same thing as an executed Form 4 sale. Keep proposed-sale context separate from transaction rows.
ownership-filing