Fiserv Inc — Current Report (Form 8-K)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 16, 2026

Fiserv, Inc.

(Exact name of registrant as specified in its charter)

(262) 879-5000

(Registrant’s telephone number, including area code)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Underwriting Agreement

On June 16, 2026, Fiserv, Inc. (the “Company”) entered into an Underwriting Agreement (the “Underwriting Agreement”) with Citigroup Global Markets Limited, J.P. Morgan Securities plc, TD Global Finance unlimited company and Wells Fargo Securities International Limited, as representatives of the several underwriters listed therein (the “Underwriters”), pursuant to which the Company agreed to sell, and the Underwriters agreed to purchase, subject to the terms and conditions set forth therein, €500,000,000 aggregate principal amount of the Company’s 3.750% Senior Notes due 2030 (the “2030 Notes”) and €500,000,000 aggregate principal amount of the Company’s 4.250% Senior Notes due 2034 (the “2034 Notes” and, together with the 2030 Notes, the “Notes”), in a public offering (the “Offering”). The Offering is expected to close on June 23, 2026, subject to customary closing conditions.

The Underwriting Agreement contains customary representations, warranties and agreements of the Company, conditions to closing, indemnification rights and obligations of the parties and termination provisions. The description of the Underwriting Agreement set forth above is qualified by reference to the Underwriting Agreement filed as Exhibit 1.1 to this Current Report on Form 8-K and incorporated herein by reference.

The Notes are registered under the Securities Act of 1933, as amended, pursuant to a Registration Statement on Form S-3 (Registration No. 333-277241) that the Company filed with the Securities and Exchange Commission on February 22, 2024, as amended by the Post-Effective Amendment No. 1 to the Registration Statement that the Company filed with the Securities and Exchange Commission on April 24, 2025. The Company is also filing the Underwriting Agreement as part of this Current Report on Form 8-K for purposes of such Registration Statement.

Exhibit Index to Current Report on Form 8-K

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.