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): September 25, 2025

Commission File Number 0-25346

ACI WORLDWIDE, INC.

(Exact name of registrant as specified in its charter)


Delaware		47-0772104
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)


6060 Coventry Drive Elkhorn, Nebraska		68022
(Address of Principal Executive Offices)		(Zip Code)

(402) 390-7600

(Registrant’s telephone number, including area code)

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:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.005 par value	ACIW	Nasdaq Global Select Market

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. ☐

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On September 25, 2025, Todd Ford and Didier Lamouche were appointed to ACI Worldwide, Inc.’s (the “Company”) Board of Directors (the “Board”) as independent directors. A press release announcing the new directors is filed as Exhibit 99.1 to this report.

Messrs. Ford and Lamouche will serve until the 2026 Annual Meeting of Stockholders and thereafter until their respective successors are duly elected and qualified. Each of Messrs. Ford and Lamouche will participate in the Company’s standard non-employee director compensation arrangements.

For a director to be considered independent, the Board must determine that the director does not have any direct or indirect material relationship with the Company. The Board has established guidelines to assist it in determining director independence which conform to the independence requirements in the NASDAQ Global Select Market listing standards. In accordance with these guidelines, the Board has determined that each of Messrs. Ford and Lamouche are independent. Neither Mr. Ford nor Mr. Lamouche is a party to any transaction, or series of transactions, required to be disclosed pursuant to Item 404(a) of Regulation S-K.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.


99.1		Press Release dated October 1, 2025

104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ACI WORLDWIDE, INC.

(Registrant)

Date: October 1, 2025

/s/ DENNIS P. BYRNES

Dennis P. Byrnes

Executive Vice President and General Counsel

ACI WORLDWIDE, INC. 8-K