I am no expert on SEC Filings but believe some kind of paperwork would have to be filed to get warrants off the shelf and into circulation. Also, if it changes their material holdings and ownership over 10% I suspect it be file AFTER the transaction, not before, but not sure.  

Question would be, where did AIGH get those warrants? Did they participate in one of the previous deals?

It is a positive development for holders to excercise their warrants. Although it increases float, it adds cash to the Bank  and decreases the amount of warrants outstanding which should make Jack happy. He's been very traumatized by their existence