Wesco International Inc.

Item 1.01 Entry into a Material Definitive Agreement. Credit Agreement Amendment On September 17, 2026, WESCO Distribution, Inc. (“Wesco Distribution”), a wholly owned subsidiary of WESCO International, Inc. (the “Company”), amended its revolving credit facility (the “ABL Facility”) pursuant to the terms and conditions of the Ninth Amendment to Fourth Amended and Restated Credit Agreement, dated as of September 17, 2026 (the “Credit Agreement Amendment”), by and among Wesco Distribution, the other U.S. borrowers party thereto, WESCO Distribution Canada LP, the other Canadian borrowers party thereto, the Company, the lenders party thereto and Barclays Bank PLC, as administrative agent, which amends the Fourth Amended and Restated Credit Agreement, dated as of June 22, 2020 (as amended, the “Credit Agreement”). The Credit Agreement Amendment, among other things, (i) extends the maturity date of the ABL Facility to September 17, 2031, (ii) increases the revolving commitments under the ABL Facility from $1,725 million to $1,850 million, (iii) decreases the interest rate spreads applicable to borrowings under the ABL Facility, (iv) increases certain negative covenant baskets and (v) makes certain other amendments to the Credit Agreement. A copy of the Credit Agreement Amendment is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated herein by reference. The description above is a summary of the Credit Agreement Amendment, does not purport to be complete, and is qualified in its entirety by the complete text of the Credit Agreement Amendment. Receivables Purchase Agreement Amendment On September 17, 2026, Wesco Distribution amended its receivables securitization facility (the “Receivables Facility”) pursuant to the terms and conditions of the Tenth Amendment to Fifth Amended and Restated Receivables Purchase Agreement, dated as of September 17, 2026 (the “Receivables Amendment”), by and among WESCO Receivables Corp., Wesco Distribution, the various purchasers and purchaser agents party thereto and PNC Bank, National Association, as administrator, which amends the Fifth Amended and Restated Receivables Purchase Agreement, dated as of June 22, 2020 (as amended, the “Receivables Purchase Agreement”). The Receivables Amendment, among other things, (i) extends the scheduled termination date of the Receivables Facility to September 17, 2029, (ii) increases the purchase limit under the Receivables Facility from $1,550 million to $1,750 million, (iii) decreases the drawn spread applicable to investments funded under the Receivables Facility and (iv) makes certain other amendments to the Receivables Purchase Agreement. A copy of the Receivables Amendment is filed as Exhibit 10.2 to this Current Report on Form 8-K and is incorporated herein by reference. The description above is a summary of the Receivables Amendment, does not purport to be complete, and is qualified in its entirety by the complete text of the Receivables Amendment.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The disclosure set forth in Item 1.01 above is incorporated by reference into this Item 2.03.