insider trades ?

Were insider informations used by Plumb and Patti to sell shares outside the OPEN MARKET
before the BARDA decision were published ? (8 May 2014)
According to my information from April/May Russel Plum hold 143 322 shares
Joseph Patti 71661 shares
After 2 purchases of Biota shares they now have Pumb 127579 shares
Patti 62241 shares
then they sold outside the OPEN MARKET Plumb 31031 shares
Patti 14467 shares
I ask me, when did they sell this shares?

Best wishes from Germany