CDW: Leadership change · Company disclosure

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On October 15, 2026, the Board of Directors (the “Board”) of CDW Corporation (the “Company”) increased the number of directors of the Company from nine to ten and appointed Saranga (Sam) Balaji to serve as a director on the Board, effective immediately. Mr. Balaji will serve on the Board’s Audit Committee. The Board has determined that Mr. Balaji is independent for purposes of the listing standards of the Nasdaq Global Select Market. Mr. Balaji will be entitled to a prorated portion of the annual compensation paid to the Company’s non-employee directors. A summary of the compensation the Company provides its non-employee directors is described in the Company’s definitive proxy statement filed with the Securities and Exchange Commission (“SEC”) on April 10, 2026. Furthermore, in connection with his appointment, Mr. Balaji and the Company will enter into the Company’s standard indemnification agreement, the form of which was filed with the SEC as Exhibit 10.32 with the Company’s Amendment No. 2 to Form S-1 filed on June 14, 2013. There are no arrangements or understandings between Mr. Balaji and any other persons pursuant to which he was selected as a director. Mr. Balaji does not have a direct or indirect material interest in any transaction required to be disclosed pursuant to Item 404(a) of Regulation S-K. Item 7.01. Regulation FD Disclosure. The Company issued a press release on October 19, 2026, announcing the appointment described in Item 5.02, a copy of which is furnished hereto as Exhibit 99.1. Item 9.01. Financial Statements and Exhibits. Exhibit No. Description 99.1 Press release dated October 19, 2026, ann