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·完整,在 背面簽名並註明日期。 ·將此表格放入提供的 信封中返回。 ·您可以通過訪問 www.investorcentre.com以電子方式註冊接收未來的 安全持有人通信 。 ·訪問以下網站: www.investorvote.com ·智能手機? 掃描二維碼 立即投票。 ·您可以通過訪問URL以虛擬方式參加會議 在此 委託書背面提供。 01年度 摺合 摺合 委託書-將於4月25日召開年度和特別會議,2024(“會議”) 。 一週7天、每天24小時使用電話或互聯網投票。 如果您通過電話或互聯網投票,請勿郵寄此代表表格。 通過郵寄或互聯網投票,持有人可以指定除此代表表格背面所列管理層被提名人以外的其他人作為代表持有人。您可以選擇上述兩種投票方式中的一種來投票此表,而不是郵寄此表。 若要通過電話或互聯網投票,您需要提供下面列出的控制編號。 . 控制編號 1.您有權指定其他人、公司或您選擇的其他法人實體(“被指定人”)出席會議或其任何延會或延期,並代表您出席會議並代表您行事。如閣下欲委任除本代表委任表格背面所列的管理層被提名人外的人士、公司或其他法人團體,請在所提供的空白處填上您所選擇的獲委任人士的姓名(見背面)。此外,如果您的 被任命人將虛擬出席會議,您必須訪問https://www.computershare.com/Celestica並向ComputerShare提供所選被任命人的所需信息,以便ComputerShare可以通過電子郵件向被任命人提供邀請碼。此邀請代碼將允許您的被任命人登錄到 並代表您在會議上投票。如果沒有邀請碼,您指定的人將只能以嘉賓身份登錄會議,並且不能投票。 2.如果證券是以多個所有者(例如,共同所有人、受託人、遺囑執行人等)的名義註冊的,則所有註冊的人都應在此委託書上簽名。 如果您代表公司、其他法人實體或其他個人投票,您必須在此委託書上簽名,並註明簽名能力,並且您可能需要提供 證明您有權簽署此委託書的文件。 3.此委託書的簽名方式應與委託書上的姓名(S)(S)完全相同。 4.如果此委託書沒有註明日期,它將被視為具有管理層郵寄給您的日期。 5.此委託書所代表的證券,在正確執行後,將根據您的指示投贊成票、反對票或棄權票,但是,如果您沒有就任何事項指示您的投票,並且您沒有指定指定的人作為您的委託持有人,則此委託書將被投票:用於選舉管理層提名的Celestica Inc.董事進入董事會;任命畢馬威有限責任公司為Celestica Inc.的審計師;授權Celestica Inc.董事會確定審計師的薪酬;關於Celestica Inc.的S高管薪酬辦法的諮詢決議;批准Celestica Inc.的修訂條款。及經細則1修訂及重述之本代表委任表格,以供確認。 6.本委託書授權酌情處理股東大會通告所指事項之修訂或變更,或其他可能提交大會或其任何延期或延期之事項。 7.本委託書應與股東大會通告及管理層資料通告一併閲讀。 遞交之委託書必須於上午9:30前收到。美國東部夏令時2024年4月23日,或如果會議延期或延期,則在休會或推遲開會前至少48小時,不包括星期六、星期日和法定節假日。 委託書須知 ·通過按鍵 電話撥打下列號碼。 多倫多大學大道100號8樓,安大略省M5J 2Y1 www.ComputerShar.com 投票使用 電話 投票使用 互聯網 虛擬出席 會議投票以郵寄方式接收文件 Mr SAM Sample 123 Samples Street SAMPLETOWN SS X9X 9X9安全類 下屬投票股份 C1234567890 XXX 持有人帳號 CPUQC01.E.INT/000001/i1234 123456789012345 1-866-732-Vote(8683)免費投票

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363343 Fold Fold . AR1 If you are not mailing back your form of proxy, you may register online to receive the above financial report(s) by mail at www.computershare.com/mailinglist. Interim Financial Statements – Mark this box if you would like to receive Interim Financial Statements and Management’s Discussion and Analysis by mail. Annual Financial Statements – Mark this box if you would like to receive the Annual Financial Statements and accompanying Management’s Discussion and Analysis by mail. 01YUMH Authorized Signature(s) – This section must be completed for your instructions to be executed. I/We authorize you to act in accordance with my/our instructions set out above. I/We hereby revoke any form of proxy previously given with respect to the Meeting. If no voting instructions are indicated above, this form of proxy will be voted as recommended by Management. DD . / MM / YY Signature(s) Date Appointment of Proxyholder Instead of either of the foregoing, print the name of the person you are appointing as an Appointee if this person is someone other than the Management Nominees listed herein. I/We, being holder(s) of Subordinate Voting Shares of Celestica Inc. hereby appoint: Michael M. Wilson or, failing him, Robert A. Mionis, or their designees (Management Nominees) OR as my/our proxyholder with full power of substitution and to attend, act and to vote in accordance with the following direction (or if no directions have been given, as the proxyholder sees fit) and to vote at the discretion of the proxyholder with respect to amendments or variations to matters identified in the Notice of Meeting of Shareholders or other matters that may properly come before the Meeting to be held at Celestica Inc.’s headquarters at 5140 Yonge Street, Suite 1900, Toronto, Ontario and online at https://meetnow.global/MUGXJDC on April 25, 2024 at 9:30 a.m. EDT and at any adjournments or postponements thereof. VOTING RECOMMENDATIONS OF MANAGEMENT ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES. Note: If completing the appointment box above YOU MUST go to http://www.computershare.com/Celestica and provide Computershare with the name and email address of the person you are appointing. Computershare will use this information ONLY to provide the Appointee with an Invitation Code to gain entry to and vote at the online meeting. If the Appointee is attending the Meeting in person, this step is NOT required. This form of proxy is solicited by and on behalf of Management. 4. Advisory resolution on Celestica Inc.’s approach to executive compensation For Against 5. Approval of articles of amendment of Celestica Inc. 6. Confirmation of Celestica Inc.’s amended and restated By-Law 1 2. Appointment of auditor Appointment of KPMG LLP as auditor of Celestica Inc. For Withhold 3. Authority to fix the remuneration of the auditor Authorization of the Board of Directors of Celestica Inc. to fix the remuneration of the auditor. 1. Election of Directors For Withhold For Withhold For Withhold 01. Kulvinder (Kelly) Ahuja 04. Françoise Colpron 07. Robert A. Mionis 02. Robert A. Cascella 05. Jill Kale 08. Luis A. Müller 09. Michael M. Wilson 03. Deepak Chopra 06. Laurette T. Koellner MR SAM SAMPLE 123 C1234567890 XXX CLSQ 999999999999