So, according to this, there are still 70 million Warrants and Options, that are all in the money and could bring up to 24 million into POET's coffers. 

 There are now 351 million primary shares outstanding and 389 million fully diluted, as well as 70 million warrants and options outstanding that are in the money, which could raise an additional $24 million dollars. The company expects that at the least the $0.39 warrants which expire November 2nd will bring in an additional $5.5 million. It believes that it needs approximately $27 million in cash to get through the next two years.

https://finance.yahoo.com/news/poetf-poet-demo-products-china-150000564.html