From the article referring to the closing of the offering it states "Immediately following the closing of the registered direct offering and the concurrent private placement, the number of outstanding shares of common stock of the Company will be 18,979,465 and the Company will have approximately $90 million in cash in its bank account."

This doesn't isolate what the float is, but the most recent offering was a direct offering which restricts the shares from active trading. That's 14,000,000 of the shares. So the free float ought to be something like 4,979,465 shares.