This happens more often than you think.
I was self a victim of a similar occurance 6 months ago, when Avion issues options at rediculous price. What happened? I got furious over managements decision and sold my shares I held for 2,5 years, that very day. What happened next? About five days later Avion was taken out by Endeavour. I am not suggesting that ATAC will be taken out tomorrow, just that, what looks like bad for shareholders, doesn't necessarily have to be that way and that anything can happen going forward. My personal view is that ATAC is looking good and performing well. I wouldn't be surprised (am rather sure) this stock will be flying in the next couple of sessions based on the trading pattern last month. It also broke the falling trend from September, this very day.