As of August 2, 2017 there were 51,053,448 shares
From most recent 10Q out on Wednesday afternoon. They "missed" for the quarter, spent a little more on the trials than the street expected. That's my thought process on the significant drop Thursday.
They had $118 million as of June 30th but have sold shares and closed this offering. By my figures they have $220 million in cash right now.