X0202 4 2005-09-15 0 0000003673 ALLEGHENY ENERGY, INC AYE 0001300135 Dudzinski Edward C/O ALLEGHENY ENERGY, INC. 800 CABIN HILL DRIVE GREENSBURG PA 15601 0 1 0 0 Vice President Common Stock, $1.25 par value 2005-09-15 4 M 0 5000 30.295 A 5000 D Common Stock, $1.25 par value 2005-09-15 4 F 0 1530 30.295 D 3470 D Stock Units 2005-09-15 4 M 0 5000 D Common Stock 5000 20000 D Represents shares of the Issuer's Common Stock issued to Mr. Dudzinski in connection with the vesting of Stock Units. Calculated based on the average of the high and low sale prices for a share of the Issuer's Common Stock on the New York Stock Exchange on September 15, 2005. Shares of the Issuer's Common Stock withheld as payment for minimum federal, state and local tax witholdings required. Mr. Dudzinski was granted 25,000 Stock Units on August 9, 2004. One-fifth of the Stock Units vested on August 9, 2005 and was paid on September 15, 2005. The remaining Stock Units will vest in equal installments on each August 9 from 2006 through 2009, provided that Mr. Dudzinski is an employee of the Issuer on the applicable vesting date. The Issuer will pay Mr. Dudzinski the full value of each vested Stock Unit in stock, subject to his election to defer payments, if any. Amanda J. Skov, Attorney-in-Fact 2005-09-19