Prepare a script if necessary. If an announcement is made, do it through a press release or conference. If you contact an analyst individually, keep a record of what was discussed and have inside counsel debrief you to try to maintain the privilege. Encourage independent anaylsis of the announcement you are making. Make a Record.
Tape record quarterly earnings conferences.
If there are handouts, keep them in a file with the tape recording. Keep notes of calls with analysts on file. Debrief the Spokesperson. Make sure that things are stated properly and that inside information is not selectively disclosed. If it was, the company should consult with counsel immediately.