Steve as you know insiders do have significant latitude to make purchases ahead of commitments becoming firm. The fact that they have pulled the trigger to make purchases now could be an indication of what they are anticipating re the interest that is being shown 

Since announcing the optical interposer platform in January, we have experienced an encouraging market response, resulting in multiple interactions with prospective partners and customers."

Someone posted POETs official blackout period rules which  gives them a bigger window than many of us thought.