X0202 4 2007-12-14 0 0000003673 ALLEGHENY ENERGY, INC AYE 0001176436 BAUM ELEANOR C/O ALLEGHENY ENERGY, INC. 800 CABIN HILL DRIVE GREENSBURG PA 15601 1 0 0 0 Common Stock, $1.25 par value 2007-12-14 4 M 0 10000 42.31 A 29202 D Common Stock, $1.25 par value 2007-12-14 4 M 0 1500 33.56 A 30702 D Common Stock, $1.25 par value 2007-12-14 4 S 0 9989 62.54 D 21060 D Stock Options 42.31 2007-12-14 4 M 0 10000 D 2000-12-07 2010-12-07 Common Stock 10000 1500 D Stock Options 33.56 2007-12-14 4 M 0 1500 D 2009-09-02 Common Stock 1500 0 D Represents shares of the Issuer's Common Stock issued to Dr. Baum in connection with the exercise of stock options pursuant to a 10b5-1 Trading Plan. Shares sold to cover the exercise price and applicable tax obligations in connection with the cashless exercise of stock options pursuant to a 10b5-1 Trading Plan. The Stock Options were granted to Dr. Baum under one of the Issuer's stock option plans. On September 2, 1999, Dr. Baum was granted Stock Options to purchase 3,000 shares of the Issuer's common stock. One third of the Stock Options vested on September 2 in each of 2000, 2001 and 2002. /s/ Amanda J. Skov, Attorney-in-Fact 2007-12-18