well maybe this explains what's been going on ...https://www.stockwatch.com/News/Item.aspx?bid=Z-C%3aPTE-2709812&symbol=PTE®ion=C
VP Sales, Director of Engineering, and Company Controller all fired "for cause" !!!! Not enough detail in PR as to what they actually did, but it sounds (i'm guessing here :) like maybe IP theft, fraud, self-dealing, and maybe even sabotage. There should be pretty solid evidence of pretty shady dealings for the company to to make such a stark blunt PR. This obviously doesn't really help the short term investment case much, but hey, at least they have enough cash on hand to pay for good lawyers.
If three highly placed insiders were actually playing dirty, it will be verry interesting to find out in time who the outside counter-parties were (if any), I hope they have deep, deep pockets.