Has there been any news that suggests they did not place these shares? Generally price is set based upon demand. I would think the $14 was based upon an order book that was filled at that price. I thnk the offering was announced the morning of the 13th when the stock was around $18. On june 17-18 the volume jumped which is likely when these were issued.
At this point is seems unlikely the overallotment would be exercised but they have 30 days