I've drafted a letter to Mr. Left informing him that you may be implicating him in a possible securities fraud scandal, with potential trading on private corporate information, and that he supposedly influenced Aetna's Utilization Management team in an attempt to profit from their decisions.
If I got any of that wrong, please let me know now. I wouldn't want to put words in your mouth.
Shall I send it to him and a copy to the SEC? Registered mail with signature required.