Observed arrival · 2026-09-15
InsiderFilingContext: A Provenance Tracker for Form 4 Records
A browser-based workspace for separating SEC Form 4 insider transactions and tracing each result back to its source record.
Field notes
The workspace accepts normalized ownership rows with accession, filer, transaction, date, and source-link fields, then applies filters for ticker, filer type, transaction code, cluster-buy window, and minimum buyers. Its stated processing separates purchases from grants, exercises, investment-fund activity, and amendments, while deduplicating repeated rows and preserving footnotes or unknown prices. Calculations run in the browser; the page says users must bring their own records because no connected public database is included in this release.
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