Hi Monocle..
As I said, I could very well be wrong. My main two points involved my agreement with Lewrock that there are, in fact (imo), enough shares for these bigger trades to transpire from the current shares available in the float, and that my theory that an order was being "worked" throughout the day is just one of many that others on this board have postulated about. Moreover, I think you are missing my point. The shares that you cited after the bell were simply not revealed during the current trading day, and thus were above and beyond the lower amount you referenced that traded during the regular market hours. In other words, they were separate and just added to the other count after the market closed. I believe this theory is plausible, but there are others that are as well.
Personally, I do not believe this has anything to do with the shelf-registration, because though the shelf-registration prospectus was filed back in June for the entire 100 million dollars, I am of the belief that each additional time the company "tapped" into the shelf an 8K would have to be filed to reflect such an event.
Best,
Tod