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Guides on insider trading signals, strategies, and how to make sense of SEC Form 4 data.
Quick Answer
Insider trading data from SEC Form 4 filings is publicly available and legal to use for investment research. The most reliable signals are cluster buying (2+ insiders buying independently within 7–14 days), large open-market purchases ($100k+), and buying the dip (insider purchases after price declines). All transaction types covered here are sourced exclusively from SEC EDGAR public disclosures.
Legal Insider Trading: What It Is and How to Track It
Not all insider trading is illegal. Learn how legal insider trading works, what corporate insiders must disclose, and how investors use this public data to find opportunities.
Read →Large Insider Purchases: What They Signal and Why They Matter
When a corporate insider makes a large open-market purchase, it's one of the most direct signals of insider confidence. Learn what counts as "large" and how to interpret it.
Read →Insider Selling: What It Means and When to Pay Attention
Insider selling is often dismissed, but sometimes it matters. Learn when insider sales are meaningful signals versus routine transactions, and how to tell the difference.
Read →SEC Form 4 Filing Deadline: When Must Insiders Report?
Corporate insiders must file Form 4 within 2 business days. Learn the deadlines, exceptions, and what late filings signal to investors.
Read →How to Read Insider Trading Data: A Practical Guide
Learn what to look for, what to ignore, and how to use insider trading data effectively in your investment research.
Read →Insider Buying Strategy: How to Follow Corporate Insiders
Learn how to use insider buying data as part of your investment research. Understand what signals matter, what to ignore, and how to apply this strategy responsibly.
Read →Cluster Buying Explained: Why Multiple Insiders Buying Together Matters
Cluster buying — when multiple insiders buy shares within a short window — is one of the strongest signals in insider data. Here's what it means and how to use it.
Read →Buying the Dip: What Insider Trading Data Reveals
When insiders buy their own stock after a price decline, it can be one of the most powerful signals available. Learn how "buying the dip" works with insider data.
Read →What is SEC Form 4? A Plain-English Guide
SEC Form 4 is the filing that reveals insider stock transactions. Learn what it contains, who must file it, and how investors use this public data.
Read →10b5-1 Plans: Why Pre-Scheduled Insider Trades Are Different
A 10b5-1 plan lets insiders sell stock on a pre-arranged schedule. Learn why these automated sales are not the same signal as discretionary insider buying — and when to ignore them.
Read →Blue-Chip Insider Buying: What It Means When Executives Buy at Large Companies
When insiders at large-cap companies make open-market purchases, the signal has specific characteristics. Learn how blue-chip insider buying differs from small-cap signals.
Read →The Best Insider Trading Indicators: What Actually Works
Not all insider trading signals are equally reliable. A practical ranking of the most meaningful insider indicators — from cluster buying to large purchases — and how to combine them.
Read →InsiderAct vs SEC EDGAR: Which is Better for Tracking Insider Trades?
Both InsiderAct and SEC EDGAR provide insider trading data — but they serve different needs. A practical comparison to help you choose the right tool for your research.
Read →Best Insider Trading Trackers 2026: InsiderAct vs OpenInsider vs TIKR
A practical comparison of the best free and paid insider trading trackers. Which tool is right for following CEO and executive stock buys? InsiderAct, OpenInsider, TIKR, and SEC EDGAR compared.
Read →How to Read SEC Form 4 Filings: A Step-by-Step Guide
A plain-English guide to reading SEC Form 4 — the insider trading disclosure. Learn which fields matter, which transaction codes signal conviction, and what to ignore.
Read →Insider Trading Glossary: Key Terms Explained
Clear definitions of insider trading terms — SEC Form 4, cluster buying, 10b5-1 plans, open-market purchases, and more. A reference for investors using InsiderAct signals.
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