X0202 4 2004-09-29 0 0000929008 WESCO INTERNATIONAL INC WCC 0001246375 DUGANIER ALLAN A 225 WEST STATION SQUARE DRIVE, SUITE 700 PITTSBURGH PA 15219 0 1 0 0 OPERATIONS CONTROLLER WESCO International Common Stock 18600 D WESCO International Common Stock 13700 D WESCO International Common Stock 12600 D WESCO International Common Stock 2004-07-27 4 S 0 5000 20.00 D 7600 D Option for WESCO International Common Stock 8.125 2010-04-24 WESCO International Common Stock 18000 18000 D Option for WESCO International Common Stock 4.50 2011-12-21 WESCO International Common Stock 5000 23000 D Option for WESCO International Common Stock 5.90 2013-08-22 WESCO International Common Stock 10000 33000 D Option for WESCO International Common Stock 5.90 2004-08-22 2013-08-22 WESCO International Common Stock 3334 29666 D Option for WESCO International Common Stock 24.02 2004-09-29 2004-09-29 4 A 0 8000 24.02 A 2007-09-29 2014-09-29 WESCO International Common Stock 8000 37666 D Options are subject to performance vesting, with any unvested options becoming vested 90 days prior to the expiration date of such options. Options vest at a rate of 1/3 per year on the anniversary date of the option grant over the next three years. /s/ Allan A. Duganier 2004-10-01