The best example of just how bad of a CEO and dealmaker Ken Lewis is in an environment where banks like JPM ( and their savvy CEO Jamie Dimon ) were scooping up Bear Stearns for prices well below where their stocks were trading ( see Wells / Wachovia , and any other bank mergers last year ) , Ken Lewis decides that he has to pay a 40 % premium to acquire ML over the weekend when he knew that Lehman was going belly up .