Can someone explain how this isn't insider trading? I don't really know what the rules are but after reading that article this is what I understood:<p>Cuban gets an email and has a private conversation with Mamma.com CEO where get gets told there will be a PIPE.<p>Apparently PIPEs dilute existing shareholders and drive stock price down.<p>To protect his assets, Cuban trades based on the information he got. The rest of the market did not have this info.<p>How is trading based on a personal conversation that gives you early and unique market insight not insider trading?