Material Agreement (Form 8-K)

Item 1.01. Entry into a Material Definitive Agreement.

Underwriting Agreement.

On September 14, 2026, CDW LLC ("CDW") and CDW Finance Corporation ("CDW Finance" and, together with CDW, the "Co-Issuers") entered into an underwriting agreement (the "Underwriting Agreement") among the Co-Issuers, CDW Corporation, as guarantor (the "Company"), and BofA Securities, Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC, and Wells Fargo Securities, LLC as representatives of the several underwriters named therein (the "Underwriters"), pursuant to which the Co-Issuers agreed to issue and sell to the Underwriters $600,000,000 aggregate principal amount of 5.700% Senior Notes due 2029 (the "2029 Notes"), $500,000,000 aggregate principal amount of 6.100% Senior Notes due 2032 (the "2032 Notes"), and $400,000,000 aggregate principal amount of 6.350% Senior Notes due 2033 (the "2033 Notes" and, together with the 2029 Notes and the 2032 Notes, the "Notes") in a registered public offering (the "Offering"). The Underwriting Agreement contains customary representations and warranties of the parties and indemnification and contribution provisions whereby the Co-Issuers and the Company, on the one hand, and the Underwriters, on the other hand, have agreed to indemnify each other against certain liabilities. The Offering is expected to close on September 21, 2026, subject to customary closing conditions.

The Offering is being made pursuant to (i) an effective Registration Statement on Form S-3ASR, as amended (the "Registration Statement"), initially filed with the Securities and Exchange Commission (the "SEC") on February 23, 2026 (File No. 333-293652), including a related base prospectus dated February 23, 2026, (ii) a related preliminary prospectus supplement dated September 14, 2026 filed with the SEC on September 14, 2026 pursuant to Rule 424(b)(5) under the Securities Act of 1933, as amended, and (iii) a free writing prospectus dated September 14, 2026.

The description of the Underwriting Agreement in this Current Report on Form 8-K is a summary and is qualified in its entirety by the terms of the Underwriting Agreement. The Underwriting Agreement is attached as Exhibit 1.1 to this Current Report on Form 8-K and is incorporated herein by reference and is to be incorporated in its entirety into the Registration Statement.

This Current Report on Form 8-K is neither an offer to sell nor the solicitation of an offer to buy the Notes or any other securities.