While investors should not be worried that this many shares will come out on the market this soon, the reality is that more than 270 million shares will become unlocked so that insiders can sell more stock. The date is scheduled for August 16, but again this is usually not a situation where all shares eligible for sale actually get sold.
Facebook has basically been cut in half and its metrics have not been helping out for the growth. That will keep some insiders from selling, or so goes the logic.
JON C. OGG