Its all tea leaves of course.....nobody is going to all of a sudden say, "that is my buy order for 13K".

It could be a bull looking to back stop the trading by providing the "illusion" that there is significant buy side interest. Or it could be someone genuinely bottom feeding who's looking to get a decent sized position, and is hoping that someone with a decent number of shares who wants out will see the interest and decide to dump.

Or it could even be an attempt to generate fear among shareholders by some industry types....

As for the 100 share buys and sells....same thought, who knows. It may be that they're partial fills of larger orders.