Reason for pullback - good question. The old adage, "sell on the news", might be the reason. IMO, the news was all good - sounds like everything is on schedule, and guidance included no apparent negatives - but perhaps some new traders expected the SP to skyrocket when this type of PR hit the street, and when the fireworks didn't happen, they took their scalps and waited on the sidelines, waiting to buy at the bottom of the dip (which I believe we just saw).
I agree with others who have written that consolidation was way overdue. I added on this dip, and will continue to do so as long as guidance doesn't change.