Form DEFA14A UNISYS CORP

Your Vote Counts! Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit www.ProxyVote.com Control # V31735-P04366-Z86824 UNISYS CORPORATION 801 LAKEVIEW DRIVE, SUITE 100 BLUE BELL, PA 19422 UNISYS CORPORATION 2024 Annual Meeting Vote by April 30, 2024 11:59 PM ET You invested in UNISYS CORPORATION and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the stockholder meeting to be held on May 1, 2024. Vote Virtually at the Meeting* May 1, 2024 8:00 a.m., Eastern time Virtually at: www.virtualshareholdermeeting.com/UIS2024 *Please check the meeting materials for any special requirements for meeting attendance. Get informed before you vote View the Notice of 2024 Annual Meeting and Proxy Statement and 2023 Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 17, 2024. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to [email protected]. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

Vote at www.ProxyVote.com Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”. Voting Items Board Recommends V31736-P04366-Z86824 THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. 1. Election of Directors Nominees: 1a. Peter A. Altabef For 1b. Nathaniel A. Davis For 1c. Matthew J. Desch For 1d. Philippe Germond For 1e. Deborah Lee James For 1f. John A. Kritzmacher For 1g. Paul E. Martin For 1h. Regina Paolillo For 1i. Troy K. Richardson For 1j. Lee D. Roberts For 1k. Roxanne Taylor For 2. Advisory vote to approve executive compensation. For 3. Ratification of the selection of Grant Thornton LLP as the Company’s independent registered public accounting firm for 2024. For 4. Approval of the Unisys Corporation 2024 Long-Term Incentive and Equity Compensation Plan. For