CBC.ca | Facebook shares sink to new low as insider 'lockup' ends CBC.ca Facebook's early investors and a handful of directors became eligible today to sell stock they own in the social networking company, putting more downward pressure on the stock. So-called "lockup" periods, which prevent insiders from unloading shares ... Facebook shares hit new depths as lock-up period ends Facebook plumbs new lows as sales curbs start to expire Facebook shares plunge to record low as insiders allowed to sell |