Sqwkvfr is quite correct.. The stock price doesn't mean squat... It could be $1000.00 a share, but if there are only "X" amount of shares available then the company just isn't that valuable... ( not saying G4 isn't valuable,)...
I'd be more willing to bet whomever is bailing is doing so under increased scrutiny from somewhere ( FAA, BOD) or they found a better job at a better company.
G4 certainly isn't buying another carrier... No one out there fits G4's business model at all. G4 doesn't have any value in its fleet, gates certainly aren't valuable, and I don't think they are robbing the Majors of too many passengers, atleast not enough to facilitate a buyout just to get rid of competition.