X0306 4 2012-12-11 0000874761 AES CORP AES 0001237640 LADER PHILIP 4300 WILSON BOULEVARD ARLINGTON VA 22203 1 Common Stock 2012-12-11 4 M 0 17725 10.72 A 23590 D Common Stock 2012-12-11 4 M 0 6329 10.72 A 29919 D Common Stock 2012-12-13 4 J 0 35125 0 A 35125 I by Lader Family Partners, LLLP Common Stock 2012-12-11 4 J 0 535 0 A 26586 I By Philip Lader, Trustee, The Linda LeSourd Lader Irrevocable Defective Grantor Trust Dated 03/11/09 Common Stock 89380 I By Family Foundation Stock Option (Right to Buy) 6.70 2012-12-11 4 M 0 17725 0 D 2013-05-13 Common Stock 17725 0 D Stock Option (Right to Buy) 8.58 2012-12-11 4 M 0 6329 0 D 2014-04-28 Common Stock 6329 0 D None of the transactions listed on this Form 4 are market transactions. Mr. Lader exercised 24,054 options and contributed the shares to the Lader Family Partners, LLLP, along with 5,865 shares he previously held directly, 25 shares held by his daughter and 5181 shares held in his IRA. Mr. Lader is General Partner and General Manager of the Lader Family Partners, LLLP. The shares owned by Lader Family Partners, LLLP are being indirectly gifted to family members of Mr. Lader. Mr. Lader is not required to report the gifts on Form 4 but will report the gifts on Form 5 within 45 days after the close of AES' fiscal year. This ten year option grant was awarded on 5/13/2003 and became exerciable in installments of 50% at the end of each of the first two years. This ten year option grant was awarded on 4/28/2004 and became exercisable in installments of 50% at the end of each of the first two years. Philip Lader 2012-12-13