No one is debating this comment (" there is no way to determine if a director divestiture has any meaning") but it sure doesn't help a stock when insider selling is happening right before investors were expecting rather game-changing information that would transform NATCORE into a profitable operation.
And when insiders are selling, it's reasonable to inquire from the company as to why. I still have hopes for the company; I have less high hopes that they are going to announce some deal with a Chinese company anytime soon, though...