ARCA is, as you know, a big MM, nothing there to say it is "our" ARCA player that is selling, it would actually surprise me if it was. If I was "them" I wouldn't show myself as a seller...would be rather stupid after the volume they have been accumulating.
For that sake I don't think it is a bad idea selling now....it is not like the BOD are delivering much to support the pps....besides that they are giving themselves a bunch of shares!