8-K

ACI WORLDWIDE, INC.

(Registrant)

Date: June 2, 2026

/s/ DENNIS P. BYRNES

Dennis P. Byrnes

Executive Vice President and General Counsel

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 2, 2026

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 5.07.

Submission of Matters to a Vote of Security Holders.

ACI Worldwide, Inc. (the “Company”) held its 2026 Annual Meeting of Stockholders (the “Annual Meeting”) on June 2, 2026. At the Annual Meeting, the stockholders voted on the following three proposals which are further described in the 2026 Proxy Statement.

Proposal 1: The stockholders elected each of the following nine nominees to the Board of Directors to hold office until the 2027 Annual Meeting of Stockholders.


Nominee	Votes For		Votes Against		Abstentions		Broker Non-Votes
Adalio T. Sanchez		91,367,712.53		1,276,571.45		31,632		4,015,407.47
Juan A. Benitez		91,429,453.53		1,214,934.45		31,528		4,015,407.47
Kimberly deBeers		92,235,001.53		405,326.45		35,588		4,015,407.47
Todd Ford		92,095,626.53		544,071.45		36,218		4,015,407.47
Mary P. Harman		90,311,711.53		2,328,535.45		35,669		4,015,407.47
Didier Lamouche		91,365,241.53		1,279,412.45		31,262		4,015,407.47
Katrinka B. McCallum		91,494,891.53		1,134,458.45		46,566		4,015,407.47
Thomas W. Warsop III		92,111,528.53		532,705.45		31,682		4,015,407.47
Samir M. Zabaneh		91,424,868.53		1,219,154.45		31,893		4,015,407.47

Proposal 2: The stockholders ratified the appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.


Votes For	Votes Against	Abstentions	Broker Non-Votes
95,338,552.00	1,322,740.00	30,031.45	0

Proposal 3: The stockholders approved, on an advisory basis, the named executive compensation as described in the 2026 Proxy Statement.


Votes For	Votes Against	Abstentions	Broker Non-Votes
89,531,017.32	3,071,310.45	73,588.21	4,015,407.47

Item 9.01.

Financial Statements and Exhibits.

(d) Exhibits.

The following exhibit is filed with this report on Form 8-K:


Exhibit No.		Description

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