Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to Commission File Number 1-38962 FISERV, INC. (Exact Name of Registrant as Specified in Its Charter) Wisconsin 39-1506125 (State or Other Jurisdiction ...

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to Commission File Number 1-38962 FISERV, INC. Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Exact Name of Registrant as Specified in Its Charter) Wisconsin 39-1506125 (State or Other Jurisdiction ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 1-38962 Fiserv, Inc. (Exact Name of Registrant as Specified in Its Charter) Wisconsin 39-1506125 (State or Other Jurisdiction of Incorporation or Organization) (I. R. S. Employer Identification No.) 255 Fiserv Drive Brookfield, WI 53045 (Address of Principal Executive Office ...