X0202 4 2006-03-31 0 0000899652 CINERGY CORP CIN 0001180668 COX PHILLIP R 139 EAST FOURTH STREET CINCINNATI OH 45202 1 0 0 0 Common Stock 2006-04-03 2006-04-03 4 D 0 3200 0 D 0.0000 D Phantom Stock Units 2006-03-31 2006-03-31 4 A 0 214.71 45.4100 A Common Stock 214.7100 17420.6942 D Phantom Stock Units 2006-04-03 2006-04-03 4 D 0 17420.6942 0 D Common Stock 17420.6942 0.0000 D Stock Option (Right to buy) 23.8125 2006-04-03 2006-04-03 4 D 0 10000 0 D 2009-12-14 Common Stock 10000.0000 0.0000 D On April 3, 2006, Cinergy Corp. ('Issuer') merged into a wholly-owned subsidiary of Duke Energy Holding Corp. (now known as Duke Energy Corporation) ('Duke Energy'). In connection with the merger, each share of Issuer's common stock was converted into the right to receive 1.56 shares of Successor's common stock and each stock option of Issuer was converted by multiplying the number of Issuer shares previously covered by the option by 1.56 and dividing the prior exercise price of the option by 1.56 The derivative security converts into common stock on a one-for-one basis. Generally payable upon reporting person's termination of service. Includes additional securities acquired pursuant to regular dividend reinvestments. The reporting person was granted 10,000 stock options on December 14, 1999. The options became exercisable in five equal annual installments. By: /s/ David S. Maltz, attorney-in-fact 2006-04-04