Answered By: Barbara Coffey
Last Updated: Sep 23, 2019     Views: 26


Company insiders are senior officers of the company, members of their board of directors and those that own more than 10% of the company’s shares.

The numbers of shares these people own are public and so are their share purchases or sales of that company. 

Insiders’ buy and sell shares through in 2 ways – Form 144 and Rule 10b5.

  • Form 144 – is for a one time purchase or sale.
  • Rule 10b5- is a pre-established plan to buy or sell the company shares at a set time every month/quarter/year.  However, as the parameters are set there can be no insider trading.

This data can be found through Thomson Reuters’ Insider Data on WRDS and through Bloomberg.  If using Bloomberg, Ticker < Equity> and look up Management Profile and Reported Holdings or use Ticker <Equity> PHDC to get list of Insiders and Institutional Ownership

Table of most insider purchases/sales – Bloomberg INSD <GO>

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