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Insider tapeFilings through Fri, Oct 2
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Short, plain-English guides to reading insider trading data.

  • What is SEC Form 4?Form 4 is the SEC filing corporate insiders use to report trades in their company's stock. Here's who files it, when it's due, and how to read the transaction codes.
  • What is a cluster buy?A cluster buy is when several insiders at the same company buy shares within a short window. Here's why investors watch them and how InsiderPrint finds them.
  • Is insider buying a good signal?Insider purchases have historically carried useful information, but not every buy is equal. Here's what tends to matter and the limits of following insiders.
  • Rule 10b5-1 plans explainedA Rule 10b5-1 plan lets insiders schedule stock trades in advance. Here's how the plans work, what changed in 2023, and why planned sales are usually less informative.
  • Our methodologyHow we parse filings, find cluster buys and score insiders and picks.