Insider Trading Education Center
Learn about insider trading, SEC filings, and how to use insider activity data for investment research.
What Is SEC Form 4? Complete Filing Guide
Everything you need to know about SEC Form 4, the statement of changes in beneficial ownership filed by corporate insiders.
How to Read SEC Form 4: Step-by-Step Guide
A detailed walkthrough of how to read and interpret SEC Form 4 filings, with explanations of every section and field.
Form 4 Transaction Codes Explained: P, S, A, M, and More
Understand all Form 4 transaction codes including purchase (P), sale (S), award (A), option exercise (M), and other SEC filing codes.
SEC Form 3 vs. Form 4 vs. Form 5: What's the Difference?
Understand the differences between SEC Forms 3, 4, and 5 — the three insider ownership reporting forms required by the SEC.
How to Use SEC EDGAR for Insider Trading Research
A guide to navigating SEC EDGAR to find insider trading filings, company reports, and ownership data.
How the SEC Detects and Prosecutes Insider Trading
Learn how the SEC uses surveillance technology, whistleblowers, and data analysis to detect and prosecute illegal insider trading.
Schedule 13D and 13G: Large Shareholder Disclosure Rules
Learn about Schedule 13D and 13G filings, required when investors acquire 5% or more of a company's shares.
Section 16 Reporting: Insider Filing Requirements Explained
Understand Section 16 of the Securities Exchange Act — the law requiring corporate insiders to report their trades.
What Is a 10b5-1 Plan? Pre-Planned Insider Trading Explained
Learn about Rule 10b5-1 trading plans that allow insiders to set up pre-arranged stock trades to avoid insider trading allegations.
SEC Insider Filing Deadlines: When Trades Must Be Reported
A complete guide to SEC filing deadlines for insider trades, including Form 3, Form 4, Form 5, and Schedule 13D timelines.