Data sources, definitions, and methodology.
Insider Trading Screener surfaces SEC Form 4 filings — the public disclosures that corporate officers, directors, and 10% shareholders must submit whenever they trade their own company's stock. Our goal is to make this data easier to browse, compare, and act on than the raw EDGAR feed.
We focus on:
Everything you might want to know about how this site works.
Every trade on this site comes from SEC EDGAR — specifically, Form 4 'Statement of Changes in Beneficial Ownership' filings submitted by corporate insiders. We re-crawl EDGAR on a short loop and typically have new filings processed within 5–15 minutes of publication.
Under Section 16 of the Securities Exchange Act, insiders are officers, directors, and anyone owning more than 10% of a company's voting shares. All three categories must file a Form 4 within two business days of any transaction in company stock.
P = open-market purchase (most bullish signal). S = open-market sale. A = grant or award (not a discretionary trade). M = exercise of options. F = shares withheld to pay taxes on a vesting event. G = gift. We weigh P and S most heavily in our screeners.
Three or more distinct insiders at the same company executing open-market purchases (code P) within a rolling 30-day window. Academic research has repeatedly shown cluster purchases outperform single-insider signals.
Rule 10b5-1 trades are pre-scheduled sales executed under a plan filed in advance. We tag these trades separately so you can distinguish discretionary signals from automated plan sales.
The trade feed, cluster-buy screener, and rankings revalidate every 5–60 minutes depending on the page. Insider and company profile pages revalidate hourly.
We derive everything from public SEC filings and do our best to normalize messy data, but filings can contain errors, amendments, or late arrivals. Always verify against the original EDGAR filing before making any decision.
No. Everything on this site is for informational and research purposes only. Insider activity is one data point among many and should not be the sole basis for any investment decision. Consult a licensed financial advisor for personalized guidance.