Insider Activity Signals
AI monitors SEC Form 4 filings for meaningful insider buying — the strongest legal signal that company executives believe their stock is undervalued.
How It Works
Insider activity signals track SEC Form 4 filings in real-time, filtering for statistically significant transactions. Not all insider trades are equal — routine option exercises and pre-planned 10b5-1 sales are noise. Our AI focuses on open-market purchases (especially by CEOs, CFOs, and directors), cluster buying (multiple insiders buying within a short window), and unusually large transactions relative to the insider's historical pattern. Academic research shows insider buying has a 60%+ hit rate over 6 months.
Real-time SEC Form 4 filing monitoring for all public companies
Filter: open-market purchases only — excludes option exercises and 10b5-1 plan sales
Significance scoring: transaction size vs. insider salary and historical buying pattern
Cluster detection: multiple insiders buying within 2 weeks is an especially strong signal
AI contextualizes the trade — what's happening at the company that might explain the purchase
Sample Signal
CFO bought $2.1M in open market at $79.30 — largest insider purchase in 8 months. Government contract pipeline expanding per recent SEC filing.
Frequently Asked Questions
Is insider trading legal?
Yes — the insiders we track are making legal, publicly disclosed trades. Officers, directors, and 10%+ shareholders must file SEC Form 4 within 2 business days of trading their company's stock. We monitor these filings. What's illegal is trading on material non-public information, which is a different thing entirely.
Why is insider buying considered bullish?
Insiders already have their salary, bonus, and stock options tied to the company. When they spend their own cash to buy more shares on the open market, it's a strong signal they believe the stock is undervalued. Academic studies show insider purchases outperform the market by 6-10% annually.
Do insider sales matter?
Less than buying. Insiders sell for many reasons — diversification, taxes, home purchases. However, our AI flags unusual sales: cluster selling by multiple executives, sales after long holding periods, or sales that break a pattern of consistent holding.
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Related Signal Types
SEC Filing
AI reads and summarizes SEC filings in real-time — 8-K material events, 10-K annual reports, proxy statements, and merger documents before analysts cover them.
Options Flow
AI tracks unusual options activity — large block trades, sweeps, and dark pool prints that reveal what institutional money is doing before the stock moves.
Multi-Factor
AI synthesizes technical, fundamental, flow, and sentiment data into a composite score. The most selective screening output across all data sources.
Tradewink provides market data and analytics tools. Signals are informational only and do not constitute investment advice, a recommendation, or a solicitation to buy or sell any security. Tradewink is not a registered investment adviser or broker-dealer. All trading decisions are made solely by you. Trading involves risk of loss. Past performance does not guarantee future results.