I didn't and I kept 100 shares as a reminder...What's it say? I did some extra work on that one. I had clues that I waited way to long to act on. Hence the reminder in my portfolio to not be so stupid. I believe that the company knew all along that their oil separation technology was fatally flawed.
I think all stockholders of IPMN received that. It was just to notify us of the charges that were filed against the principals of IPMN and to notify us of our rights as victims.