=============================================================================== UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): APRIL 23, 2003 WESCO INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Commission file number 001-14989 DELAWARE 25-1723342 (State or other jurisdiction (IRS Employer Identification No.) of incorporation or organization) 225 WEST STATION SQUARE DRIVE SUITE 700 PITTSBURGH, PENNSYLVANIA 15219 (412) 454-2200 (Address of principal executive offices) (Registrant's telephone number, including area code) N/A (Former name or former address, if changed since last report) =============================================================================== ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. a) Financial statements of businesses acquired. Not applicable. b) Pro forma financial information. Not applicable. c) Exhibits. 99.1 Press Release of WESCO International, Inc. dated April 23, 2003 ITEM 9. REGULATION FD DISCLOSURE. WESCO International, Inc. ("WESCO") is furnishing the following information under Item 12, "Disclosure of Results of Operations and Financial Condition" and is included under this Item 9 in accordance with SEC Release Nos. 33-8216; 34-47583. The information in this Current Report is being furnished and shall not be deemed "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section. The information in this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended. On April 23, 2003, WESCO issued a press release announcing its earnings for the first quarter of 2003. A copy of the press release is attached hereto as Exhibit 99.1. 2 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. April 23, 2003 WESCO International, Inc. -------------- --------------------------------------- (Date) /s/ Stephen A. Van Oss --------------------------------------- Stephen A. Van Oss Vice President, Chief Financial Officer 3 EXHIBIT INDEX Exhibit 99.1: Press release of WESCO International, Inc. dated April 23, 2003. 4