On face value of the minimal information available to the public, the only conclusion we can draw is that the transaction made sense to Linda Sterling. Looks to me like this could have been a planned sale under a 10b 5-1 Trading Plan; afterall Linda is clearly an insider.
If my speculation is correct, then we could conclude that when Linda developed her Trading Plan she anticipated the development and testing of the POC analyzer would have been completed prior to this transaction date.
Ante