# EDGAR Filing Document

**Accession Number:** 0000935036
**File Stem:** 0001193125-26-162587
**Filing Date:** 2026-4
**Character Count:** 10665
**Document Hash:** 89878f77f57a72866a8050ae22185953
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-162587.hdr.sgml**: 20260420

**ACCESSION NUMBER**: 0001193125-26-162587

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 6

**FILED AS OF DATE**: 20260420

**DATE AS OF CHANGE**: 20260420

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ACI WORLDWIDE, INC.
- **CENTRAL INDEX KEY:** 0000935036
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 470772104
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-25346
- **FILM NUMBER:** 26873266

**BUSINESS ADDRESS:**
- **STREET 1:** 6060 COVENTRY DRIVE
- **CITY:** ELKHORN
- **STATE:** NE
- **ZIP:** 68022
- **BUSINESS PHONE:** 239-403-4600

**MAIL ADDRESS:**
- **STREET 1:** 6060 COVENTRY DRIVE
- **CITY:** ELKHORN
- **STATE:** NE
- **ZIP:** 68022

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TRANSACTION SYSTEMS ARCHITECTS INC
- **DATE OF NAME CHANGE:** 19950109

**SCHEDULE 14A INFORMATION** 

**Proxy Statement Pursuant to Section 14(a) of the** 

**Securities Exchange Act of 1934** 

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

## ACI WORLDWIDE, INC.
**(Name of Registrant as Specified In Its Charter)** 

**(Name of Person(s) Filing Proxy Statement, if other than the Registrant)** 

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

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![LOGO](g44162g42n45.jpg)

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| | |
|:---|:---|
|  | **Meeting Materials:** Notice of Meeting and Proxy |
|  | Statement & Annual Report |
| **ACI Worldwide, Inc.** <br>**Annual Meeting of Stockholders** | **Important Notice Regarding the Availability of Proxy Materials for the Stockholders Meeting To Be Held On June 2, 2026 For Stockholders of record as of April 8, 2026** |
| Tuesday, June 2, 2026 10:00 AM, Eastern Time | **To order paper materials, use one of the following methods.** |
| Annual meeting to be held virtually via the internet - please visit www.proxydocs.com/ACIW for more details.<br>| ![LOGO](g44162g45o23.jpg) |
| **You must register to attend the meeting online and/or participate at www.proxydocs.com/ACIW** | ![LOGO](g44162g45o23.jpg) |
| **You must register to attend the meeting online and/or participate at www.proxydocs.com/ACIW** | **Internet:** |
|  | **www.investorelections.com/ACIW** |
| **For a convenient way to view proxy materials, VOTE, and obtain directions to attend the meeting, go to www.proxydocs.com/ACIW** | ![LOGO](g44162g05x59.jpg) |
| **For a convenient way to view proxy materials, VOTE, and obtain directions to attend the meeting, go to www.proxydocs.com/ACIW** | ![LOGO](g44162g05x59.jpg) |
| **To vote your proxy while visiting this site, you will need the 12 digit control number in the box below.** | ![LOGO](g44162g05x59.jpg) |
| **To vote your proxy while visiting this site, you will need the 12 digit control number in the box below.** | **Call:** |
|  | **1-866-648-8133** |
| This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting. | ![LOGO](g44162g57d77.jpg) |
| This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting. | ![LOGO](g44162g57d77.jpg) |
| This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting. | ![LOGO](g44162g57d77.jpg) |
| This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting. | **Email:** |
|  | **paper@investorelections.com** |
| Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. |  |
| Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. | \* If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. |
| Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. | \* If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. |
| Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. | \* If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. |
| Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. | \* If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. |
| If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 23, 2026. | \* If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. |
| If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 23, 2026. | <br> **Your control number** |
| If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 23, 2026. | <br> **Your control number** |
| If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 23, 2026. |  |
| If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 23, 2026. | Have the 12 digit control number located in the |
| If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 23, 2026. | box above available when you access the |
| If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 23, 2026. | website and follow the instructions. |
| **SEE REVERSE FOR FULL AGENDA** |  |

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Copyright <sup>©</sup> 2026 BetaNXT, Inc. or its affiliates. All Rights Reserved

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| | |
|:---|:---|
| ![LOGO](g44162g33c82.jpg) | **ACI Worldwide, Inc. Annual Meeting of Stockholders** |

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**THE BOARD OF DIRECTORS RECOMMENDS A VOTE:**

**FOR** ALL NOMINEES FOR DIRECTOR ON PROPOSAL 1, AND **FOR** PROPOSALS 2 AND 3

**PROPOSAL** 

1. To elect the nine directors named in the accompanying proxy statement to our Board of Directors to hold office
until the 2027 Annual Meeting of Stockholders;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.01 Adalio T. Sanchez

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.02 Juan A. Benitez

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 Kimberly deBeers

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.04 Todd Ford

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.05 Mary P. Harman

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.06 Didier Lamouche

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.07 Katrinka B. McCallum

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.08 Thomas W. Warsop III

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09 Samir M. Zabaneh

2. To ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for
2026;

3. To conduct an advisory vote to approve named executive officer compensation; and

4. To transact such other business as may properly come before the Annual Meeting and any adjournment or
postponement thereof.