费哲金融服务 2025年度报告

ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December31, 2025 OR TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 Full title of the plan and the address of the plan, if different from that of the issuer named below: FISERV 401(k) SAVINGS PLAN Name of issuer of the securities held pursuant to the plan and the address of its principal executive office: Fiserv, Inc.600 N. Vel R. Phillips AvenueMilwaukee, Wisconsin 53203 REQUIRED INFORMATION The Fiserv 401(k) Savings Plan (the “Plan”) is subject to the Employee Retirement Income Security Act of 1974, as amended(“ERISA”). Therefore, in lieu of the requirements of Items 1-3 of Form 11-K, the financial statements of the Plan as of December 31,2025 and 2024 and for the fiscal year ended December 31, 2025 and supplemental schedule of the Plan as of December 31, 2025, Table of Contents Pursuant to the requirements of the Securities Exchange Act of 1934, the agent for the Plan has duly caused this annual report to besigned on its behalf by the undersigned hereunto duly authorized. FISERV 401(k) SAVINGS PLAN Financial Statements as of December 31, 2025 and 2024 and for the Year Ended December 31, 2025,SupplementalSchedule as of December 31, 2025, andReport of Independent Registered Public Accounting Firm PageREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM1FINANCIAL STATEMENTS:Statements of Net Assets Available for Benefits as of December31, 2025 and 20242Statement of Changes in Net Assets Available for Benefits for the Year Ended December31, 20253Notes to Financial Statements as of December 31, 2025 and 2024 and for the Year Ended December 31, 20254SUPPLEMENTAL SCHEDULE FURNISHED PURSUANT TO DEPARTMENT OF LABOR’S RULES ANDREGULATIONSForm 5500, Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year) as of December31, 202512NOTE:All other schedules required by Section 2520.103-10 of the Department of Labor’s Rules and Regulations forReporting and Disclosure under the Employee Retirement Income Security Act of 1974 have been omitted REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Plan Participants and Plan Administrator of Fiserv 401(k) Savings Plan: Opinion on the Financial Statements We have audited the accompanying statements of net assets available for benefits of the Fiserv 401(k) Savings Plan (the “Plan”) as ofDecember31, 2025 and 2024, the related statement of changes in net assets available for benefits for the year ended December31,2025, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements presentfairly, in all material respects, the net assets available for benefits of the Plan as of December31, 2025 and 2024, and the changes in Basis for Opinion These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on the Plan’sfinancial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting OversightBoard (United States) (PCAOB) and are required to be independent with respect to the Plan in accordance with the U.S. federal We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the auditto obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due toerror or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidenceregarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used Report on Supplemental Schedule The supplemental schedule of assets (held at end of year) as of December31, 2025, has been subjected to audit procedures performedin conjunction with the audit of the Plan’s financial statements. The supplemental schedule is the responsibility of the Plan’smanagement. Our audit procedures included determining whether the supplemental schedule reconciles to the financial statements orthe underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the /s/ DELOITTE & TOUCHE LLPMilwaukee, WisconsinJune25, 2026 We have served as the auditor of the Plan since 2021. FISERV 401(k) SAVINGS PLAN NOTES TO FINANCIAL STATEMENTSAS OF DECEMBER31, 2025 AND 2024 AND FOR THE YEAR ENDED DECEMBER 31, 2025 1. PLAN DESCRIPTION The following description of the amended and restated Fiserv 401(k) Savings Plan (the “Plan”) is provided for informational purposesonly. Participants should refer to the Plan document for a complete description of the Plan’s provisions. General—The Plan, which was estab