X0303 4 2009-12-31 0000874761 AES CORP AES 0001428362 Santoroski Richard 4300 WILSON BOULEVARD ARLINGTON VA 22203 1 Vice President Common Stock 2009-12-31 4 M 0 5205 A 10930 D Common Stock 2009-12-31 4 F 0 1682 13.31 D 9248 D Common Stock 20112 I By 401(k) Plan Restricted Stock Units 2009-12-31 4 M 0 5205 D 2009-12-31 2009-12-31 Common Stock 5205 0 D Units 2009-12-31 4 A 0 36 13.31 A Common Stock 36 4919 D Each restricted stock unit represented a contingent right to recieve one share of AES Common Stock. These units were awarded pursuant to the Restoration Supplemental Retirement Plan (the "Plan"). The reporting person has elected to defer receipt of compensation otherwise payable to him in the form of stock units, the value of which is determined based on the Company's closing stock price on the last business day of each month. The Plan allows for distribution upon a date(s) specified by the participant in the event of the participant's unforeseeable emergency, death or termination of employment. This amount represents the reporting person's December 2009 deferral. /s/ Richard Santoroski 2010-01-05