SEC Insider Trading Screener
Track insider buying and selling activity from SEC Form 4 filings. Identify stocks where executives are putting their own money in — or cashing out. Updated every hour from EDGAR.
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Understanding SEC Insider Trading Signals
Insider trading — when corporate executives buy or sell their own company's stock — is one of the most closely watched signals in the financial markets. The SEC requires all corporate insiders (officers, directors, and 10%+ shareholders) to file Form 4 within two business days of any transaction.
Why Insider Buying Matters
While insiders sell stock for many reasons (diversification, taxes, personal expenses), they typically buy for only one reason: they believe the stock is undervalued. Academic research consistently shows that insider purchases outperform the market:
- Stocks with significant insider buying outperform the S&P 500 by 7-10% annually
- CEO and CFO purchases carry the strongest predictive signal
- Cluster buying (multiple insiders buying within the same period) amplifies the signal
- Large open-market purchases (>$100K) indicate higher conviction
Why Insider Selling Also Matters
While insider selling is more common and often less informative than buying, large or unusual selling patterns can signal important information. When multiple C-suite executives sell significant portions of their holdings simultaneously, it may indicate concerns about the company's near-term prospects. Our screener now tracks both buys and sells to give you the complete picture.
How Our Screener Works
Our SEC Insider Trading Screener automatically fetches and parses Form 4 filings from the SEC EDGAR database. We capture both purchases and sales, enrich the data with current stock prices to calculate post-transaction performance, and rank transactions by conviction signals like transaction size and insider title.
Key Filters Explained
Buys Only / Sells Only: Filter to see exclusively insider purchases or sales. Large Transactions (>$100K): Filters for transactions where the insider moved more than $100,000, indicating serious conviction. CEO/CFO Only: C-suite executives have the deepest company knowledge, making their transactions the most informative signal for investors.