X0306 4 2018-02-19 0000874761 AES CORP AES 0001626763 Da Santos Bernerd 4300 WILSON BOULEVARD ARLINGTON VA 22203 1 Sr. VP and COO Common Stock 2018-02-19 4 F 0 2288 10.45 D 93898 D Common Stock 2018-02-20 4 F 0 921 10.40 D 92977 D Common Stock 25035 I by 401(k) Reflects tax withholding in connection with the vesting and settlement of one-third of the Restricted Stock Units ("RSUs") granted February 19, 2016. There was no transaction in the market. Reflects tax withholding in connection with the vesting and settlement of one-third of the RSUs granted February 20, 2015. There was no transaction in the market. Since the last Form 4 filing in which such shares were reported on February 2, 2018, the reporting person acquired 579 additional shares of AES Common Stock pursuant to The AES Corporation Retirement Savings Plan. The information in this report is based on a plan statement dated February 21, 2018. /s/ Bernerd R. DaSantos 2018-02-21