WESCO International(WCC) - 2019 Q1 - Quarterly Report

Commission File Number: 001-14989 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to (412) 454-2200 WESCO International, Inc. (Registrant's telephone number, including area code) (Exact name of registrant as s ...