This is for the material, non-public info thing. From the ethics manual -
"Members and candidates must be particularly aware of information that is
selectively disclosed by corporations to a small group of investors, analysts, or other
market participants. Information that is made available to analysts remains nonpublic
until it is made available to investors in general. Corporations that disclose
information on a limited basis create the potential for insider-trading violations.
Issues of selective disclosure often arise when a corporate insider provides
material information to analysts in a briefing or conference call before that
information is released to the public. Analysts must be aware that a disclosure
made to a room full of analysts does not necessarily make the disclosed information
�public.� Analysts should also be alert to the possibility that they are
selectively receiving material nonpublic information when a company provides
them with guidance or interpretation of such publicly available information as
financial statements or regulatory filings." pg. 38
So according to CFA Institute, if you attend a briefing or a conference call you have a problem trading the stock. I guess that corporations ought to stop providing guidance this way. (More CFAI idiocy)