Free Writing Prospectus (Form FWP)

Filed Pursuant to Rule 433

Registration Statement No. 333-288198

Pricing Term Sheet

March 5, 2026

FIDELITY NATIONAL INFORMATION SERVICES, INC.

Pricing Term Sheet

€500,000,000 Floating Rate Senior Notes due 2028 (the "Floating Rate Notes")

€500,000,000 3.450% Senior Notes due 2030 (the "Fixed Rate Notes")

(the Floating Rate Notes together with the Fixed Rate Notes, the "Senior Notes")

The information in this pricing term sheet supplements Fidelity National Information Services, Inc.'s (the "Issuer") preliminary prospectus supplement, dated February 26, 2026 (the "Preliminary Prospectus Supplement"), relating to the Senior Notes, and supersedes the information in the Preliminary Prospectus Supplement to the extent it is inconsistent with the information contained therein. This pricing term sheet is qualified in its entirety by reference to the Preliminary Prospectus Supplement. Financial information presented in the Preliminary Prospectus Supplement or incorporated by reference therein is deemed to have changed to the extent affected by the changes described herein. This pricing term sheet should be read together with the Preliminary Prospectus Supplement, including the documents incorporated by reference therein, and the accompanying prospectus, dated June 20, 2025, before making a decision in connection with an investment in the Senior Notes. Capitalized terms used in this pricing term sheet but not defined have the meanings given to them in the Preliminary Prospectus Supplement.

The Issuer has filed a registration statement (including a prospectus and the related Preliminary Prospectus Supplement) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus and the Preliminary Prospectus Supplement in that registration statement and the other documents the Issuer has filed with the SEC for more complete information about the Issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the Issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and Preliminary Prospectus Supplement if you request it by contacting Goldman Sachs & Co. LLC toll-free at +1 (866) 471-2526, Wells Fargo Securities International Limited toll-free at +1 (800) 645-3751, Citigroup Global Markets Limited toll-free at +1 (800) 831-9146, J.P. Morgan Securities plc (for non-U.S. investors) at +44-20 7134-2468, J.P. Morgan Securities LLC (for U.S. investors) collect at +1 (212) 834-4533 or TD Global Finance unlimited company toll-free at +1 (855) 495-9846.

This pricing term sheet is not a prospectus for the purposes of (i) Regulation (EU) 2017/1129, as amended or (ii) Regulation (EU) 2017/1129 as it forms part of domestic law in the U.K.

MiFID II and UK MiFIR - professionals/ECPs-only / No PRIIPs KID or U.K. PRIIPs KID - Manufacturer target market (MiFID II and UK MiFIR product governance) is eligible counterparties and professional clients only (all distribution channels). No PRIIPs or U.K. PRIIPs key information document (KID) has been prepared as not available to retail investors in the EEA or the U.K.

The communication of this pricing term sheet and any other document or materials relating to the issue of the Senior Notes is not being made, and such documents and/or materials have not been approved, by an authorized person for the purposes of section 21 of the U.K.'s Financial Services and Markets Act 2000, as amended. Accordingly, this pricing term sheet and any such other documents and/or materials are not being distributed to, and must not be passed on to, the general public in the U.K. This pricing term sheet and any such other documents and/or materials are for distribution only to persons who (i) have professional experience in matters relating to investments and who fall within the definition of investment professionals (as defined in Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Financial Promotion Order")), (ii) fall within Article 49(2)(a) to (d) of the Financial Promotion Order, (iii) are outside the U.K., or (iv) are any other persons to whom they may otherwise lawfully be communicated or distributed under the Financial Promotion Order (all such persons together being referred to as "relevant persons"). This pricing term sheet and any such other document and/or materials are directed only at relevant persons and must not be acted on or relied on by persons who are not relevant persons. Any investment or investment activity to which this pricing term sheet and any such other document and/or materials relate will be engaged in only with relevant persons. Any person in the U.K. that is not a relevant person should not act or rely on this pricing term sheet or any other document or materials relating to the issue of the Senior Notes or any of their contents.

Relevant stabilization regulations including FCA/ICMA will apply.

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