This year's flurry of corporate mergers may not pay off for shareholders in the long run, but one thing is for sure: The bosses who are selling their companies will do just fine. The CEOs who've decided to sell in the 10 biggest U.S. deals this year are set to rake in an estimated $430 million in "golden parachute" payments, according to a study done by pay-tracking firm Equilar at the request of The Associated Press.