if you are gonna cancel shares in dead peoples accounts the the next of kin would have to be notified. when some one croaks the estate moves on and i'm sure whoever inherited it either sold or is holding. regardless they are aware. oh my gawd that's funny....just picture all the zombie shareholders,oh wait...already have that. no,i'm not buying into that scenario....but George Romero might! CHEERS
Damn straight GS knows who has shares, its called Registered shareholders list, GS can purchase it, generally, from the transfer agent. In fact, he may even be tracking the price manipulation for shady characters, that would be a GS move.