X0306 4 2021-02-19 0000874761 AES CORP AES 0001628839 Mendoza Tish 4300 WILSON BOULEVARD ARLINGTON VA 22203 1 Sr. VP & Chief HR Officer Common Stock 2021-02-19 4 A 0 7741 A 119687 D Common Stock 2021-02-19 4 A 0 18773 A 138460 D Common Stock 2021-02-19 4 F 0 7950 28.31 D 130510 D Common Stock 2021-02-19 4 F 0 1098 28.31 D 129412 D Common Stock 24989 I by 401(k) This Restricted Stock Unit ("RSU") award was granted pursuant to The AES Corporation 2003 Long Term Compensation Plan and will generally vest in three annual installments, subject to the terms and conditions of the award. One-third of the RSUs will vest based on the reporting person's continued employment with AES or a subsidiary on each of February 19, 2022 and February 19, 2023. The final third of the RSUs will vest on February 19, 2024 subject to the reporting person's continued employment with AES or a subsidiary on such date and based, in part, on AES' achievement of certain environmental and social goals. Each RSU entitles the holder to one share of AES Common Stock. This Performance Stock Unit ("PSU") award was granted on February 23, 2018 pursuant to The AES Corporation 2003 Long Term Compensation Plan. After the prescribed three year vesting period, the AES Board of Directors approved the performance value for the grant on February 19, 2021. Each earned PSU entitles the holder to one share of AES Common Stock. Reflects tax withholding in connection with the settlement of PSUs granted in February 2018. Reflects tax withholding in connection with the vesting and settlement of one-third of the RSUs granted February 21, 2020. Since the last Form 4 filing on March 23, 2020, the reporting person acquired 794 additional shares of AES Common Stock pursuant to The AES Corporation Retirement Savings Plan. This information is based on a plan statement dated February 22, 2021. /s/ Letitia (Tish) D. Mendoza 2021-02-23