X0303 4 2008-09-18 0001326160 Duke Energy CORP DUK 0001237305 HAUSER DAVID L 526 S. CHURCH STREET CHARLOTTE NC 28202 1 Grp Exec & CFO Common Stock 2008-09-18 4 S 0 3000 18.50 D 64365 D Common Stock 2008-09-19 4 S 0 3000 19.09 D 61365 D Common Stock 34648 I By Retirement Savings Plan Common Stock 192 I By Spouse On April 3, 2006, Duke Power Company, LLC, formerly known as Duke Energy Corporation (Predecessor), merged into a wholly-owned subsidiary of Duke Energy Corporation, formerly known as Duke Energy Holding Corp. (Issuer). In connection with the merger, each share of Predecessor's common stock was converted into the right to receive one share of Issuer's common stock. /s/ David S. Maltz, attorney-in-fact for David L. Hauser 2008-09-22