Celestica, Inc.

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On March 24, 2026, Michael M. Wilson, Chair of the Board of Directors (the “Board”) of Celestica Inc. (the “Company”), informed the Company that he will not stand for re-election as a director at the Company’s 2026 annual meeting of shareholders (the “2026 AGM”), effective as of immediately prior to the 2026 AGM. Mr. Wilson’s decision to retire was consistent with the Company’s director retirement policy and was not due to any disagreement with the Company on any matter relating to its operations, policies or practices. In connection with Mr. Wilson’s departure, Robert A. Mionis, President and CEO of the Company, was appointed as Chair of the Board, and Laurette T. Koellner was appointed as Lead Independent Director of the Board, both effective as of immediately prior to the 2026 AGM. On March 24, 2026, the Board also appointed David Reeder as a member of the Board, effective May 1, 2026. The Board has determined that Mr. Reeder qualifies as an independent director under Canadian securities laws and New York Stock Exchange listing standards. Mr. Reeder has been appointed to the Company’s Audit Committee, Human Resources and Compensation Committee and Nominating and Corporate Governance Committee, effective May 1, 2026. He will be compensated in accordance with the director compensation policies and principles applicable to the Board. Mr. Reeder is an experienced executive with expertise in leading global semiconductor and technology enterprises. He currently serves as President, Chief Executive Officer and a member of the board of directors of Entegris, Inc. Prior to that, he served as Chief Financial Officer at Chewy from 2024 to 2025 and as Chief Financial Officer at GlobalFoundries from 2020 to 2024 where he oversaw the company’s initial public offering in 2021. He previously held executive positions at Tower Hill Insurance Group, Lexmark International Inc., Electronics for Imaging Inc., Cisco, Broadcom and Texas Instruments Incorporated. He served on the board of directors of Alphawave IP Group plc from 2023 to 2025. Mr. Reeder brings to the Board significant financial and operational leadership experience across multiple industries. There are no arrangements or understandings between Mr. Reeder and any other person pursuant to which Mr. Reeder was selected as a director, and there are no transactions in which the Company is a participant and in which Mr. Reeder has a material interest subject to disclosure under Item 404(a) of Regulation S-K. A copy of the press release announcing the appointments is attached as Exhibit 99.1 to this report.