X0306 4 2020-07-02 0 0000929008 WESCO INTERNATIONAL INC WCC 0001301572 Dosch Ted A 225 WEST STATION SQUARE DRIVE SUITE 700 PITTSBURGH PA 15219 0 1 0 0 EVP, Strategy & CTO Restricted Stock Units 2020-07-02 4 A 0 43505 0.00 A Common Stock 43505 43505 D Each Restricted Stock Unit ("RSU") represents the contingent right to receive, subject to the terms and conditions set forth in the related Restricted Stock Unit Agreement and the Company's 1999 Long-Term Incentive Plan, either (i) one share of the Company's common stock, par value $0.01 per share (a "Share") or (ii) a cash payment equal to the Fair Market Value of one Share as of the applicable vesting date, in each case, for each RSU that has vested in accordance with such terms and conditions. The Restricted Stock Units shall time-vest 30% on the first anniversary of the grant date, 30% on the second anniversary of the grant date, and 40% on the third anniversary of the grant date. /s/ Samantha L. O'Donoghue, as Attorney-in-Fact 2020-07-07