Just got this reply to my inquiry from DM, our CEO.
"Piecemaker,
We suspect that one of our shareholders was liquidated via a margin call from his brokerage firm. There has been no material event from the Company business side to explain such a sell off. When we went through the trading logs the next day, we found that 500,000 shares were all sold in 26 minutes!
Regards,
Daniel Mckinney"