Eugene Isenberg, the former Nabors Industries Ltd. chief executive, isn't the only CEO looking at a gilded exit.

At least three other chief executives are in line for payouts of more than $50 million from "golden parachutes" opened by pending acquisitions, according to a Wall Street Journal analysis of Securities and Exchange Commission filings. Topping the list: Sanjay Jha, CEO of Motorola Mobility Holdings Inc., who could receive $65.7 million as part of Google Inc.'s acquisition of the cellphone maker, according to Motorola's...