FISV: Leadership change

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On September 16, 2026, Adam L. Rosman resigned as Chief Administrative Officer and Chief Legal Officer of Fiserv, Inc. (the “Company”), effective September 30, 2026. Eric C. Nelson, the Company’s current General Counsel and Secretary, will succeed Mr. Rosman as Chief Legal Officer on October 1, 2026. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FISERV, INC. Date: September 22, 2026 By: /s/ Paul M. Todd Paul M. Todd Chief Financial Officer