If those insider selling numbers are correct, which appear to be as nobody has so far contested them that I could see, and even without the wrong claim by the CEO that FB has more mobile users than the top two smartphone companies, we may be looking for a rough patch for the stock. Depending how things go I may sell all my long shares within minutes of open tomorrow.
But insider trading numbers have always been available and the stock price has been rising. It's not like these numbers were just released and the public had no idea. According to this thread, I guess some people were not aware and are getting hysterical over old news. I don't really see insider selling effecting price movement tomorrow.
MZ's prior comments and the recent Ben Evans report is another issue. I'm not sure how that will play out, but at the surface it's definitely not a good look. Facebook might have to release a statement tomorrow to clear up what could be construed as a semantics issue.