What is the thinking on a company buying back shares when it is obviously privy to valuable inside information, especially in the situation PTSC finds itself. 

They have previously made notice that they are going to be buying shares periodically in the future, which has been ongoing.  Now they are (perhaps) aware of a significant settlement which could have a major impact on share market price.  Are they still allowed to buy shares?  Should they be?  Is there a time period after they come into contact with such significant information for which they must abstain from buying?

What happens if they and the defendants are the only ones who know the settlement amounts up until the time PTSC files its Q, and thus while the public was not aware of the potentially mega-amounts involved PTSC kept buying its shares; is that permitted / proper?

Just some thoughts that crossed my mind.  I am confident they are doing the right thing -- just not exactly sure what that is in a situation like this.