Insider trading guides
Plain-English explainers on the filings behind every alert: what they are, what the research says, and how to read them.
- How to read a Form 4Who files, the transaction codes, and five checks on a purchase.
- Cluster buys explainedWhen several insiders buy the same stock, and what research found.
- 10b5-1 plans explainedPre-arranged trades, the 2023 rules, and why they say less.
- Schedule 13D vs 13GActivist and passive 5% stakes, the deadlines, and what to read.
- Form 144 explainedThe notice that comes before an insider sale.
- Track Congress stock tradesSTOCK Act reports: deadlines, ranges, and how to read them.
- The Form 144 head startHow far ahead of the reported sale the notice lands, measured live on every matched pair.
- Portfolio checkPaste your tickers: who's planning to sell, and how early you'd have known.
- The best insider trading trackersEleven tools compared: price, alert speed, coverage.
- OpenInsider alternativesFree and paid tools, and what each adds.
- Case studiesNotable insider buys and what happened next.
Live pages
- Insider buying todayEvery open-market buy filed today.
- Cluster buysSeveral insiders buying the same stock.
- This week in insider buyingThe week's best and biggest.
- Track recordWhat every alerted buy did next.
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