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Guides to SEC filings and to working with EDGAR data in code.
Institutional holdings
What Is a 13F Filing? How to Read Institutional Holdings
A plain guide to Form 13F: who files it, what it shows, what it leaves out, and how to pull every position as clean data.
Oct 12, 2026 · 5 min readInsider tradingSEC Form 4 Explained: How to Read Insider Transactions
A guide to Form 4 filings: who must file, what the transaction codes mean, when they are due, and how to pull every transaction as structured data.
Oct 12, 2026 · 6 min readInsider tradingHow to Track Insider Buying and Selling With Public Data
A practical guide to tracking insider buying and selling using public Form 4 data, including real time alerts, filters and historical bulk downloads.
Oct 12, 2026 · 6 min readInsider tradingForm 4 Transaction Codes: P, S, A, M, F and More Explained
Every Form 4 transaction code explained, from open market purchases and sales to option exercises, gifts, and transactions exempt under Rule 16b-3.
Oct 12, 2026 · 6 min read