X0306 4 2022-12-20 0 0000929008 WESCO INTERNATIONAL INC WCC 0001196754 RAYMUND STEVEN A 225 W. STATION SQUARE DRIVE SUITE 700 PITTSBURGH PA 15219 1 0 0 0 Deferred Share Units 2022-12-20 4 A 0 982.9652 0.00 A Common Stock 982.9652 15602.4267 D Deferred share units ("DSUs") are credited to the Reporting Person's deferred compensation account pursuant to the Issuer's Deferred Compensation Plan for Non-Employee Directors (the "Plan"). Each DSU is the economic equivalent of one share of Issuer's common stock and is eligible for distribution in the form of Issuer's common stock based on the schedule elected by the Reporting Person in accordance with the plan. /s/ Michele Nelson, as Attorney-in-Fact 2022-12-20