Corporate insiders — executives, directors, and major shareholders — must report any purchase or sale of their company's stock to the SEC within two business days via Form 4. When a CEO spends their own money buying stock, they are betting their personal wealth that it goes higher.
What to look for: cluster buying (multiple insiders buying simultaneously), large dollar amounts, and buying near 52-week lows. These patterns have historically preceded significant price appreciation.
Insider selling is more ambiguous — executives sell for many reasons (taxes, diversification, exercise of expiring options) and is not necessarily bearish. The quantity and timing matter. Selling 5% of holdings is very different from selling 80%.
StockifyX tracks Form 4 filings for major companies on our Insider Buying page, updated daily. Filter by company, date, or transaction size to find meaningful signals.