Results of Operation and Financial Condition . On August 6, 2026, the Company issued a press release announcing its financial results for the three months ended June 30, 2026. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “

Results of Operation and Financial Condition . On May 7, 2026, the Company issued a press release announcing its financial results for the three months ended March 31, 2026. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “

Results of Operation and Financial Condition . On February 26, 2026, the Company issued a press release announcing its financial results for the three months and year ended December 31, 2025. A copy of this press release is attached hereto as Exhibit 99.1. Following the publication of the earnings release, the Company hosted an earnings call in which its financial results were discussed. The investor presentation materials used for the call are attached as Exhibit 99.2. The foregoing informat…

Director — Charles Peters and Janet Estep: Charles Peters and Janet Estep resigned from the Board of Directors.

Chief Technology Officer — Abe Kuruvilla: The CTO is departing with a named internal successor assuming responsibilities, indicating an orderly transition rather than a sudden loss of leadership.

Results of Operation and Financial Condition . On November 6, 2025, the Company issued a press release announcing its financial results for the three months ended September 30, 2025. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “

Director — Todd Ford and Didier Lamouche: Appointment of new independent directors to the Board.

Chief Revenue Officer — Alessandro Silva: The Chief Revenue Officer is departing due to the elimination of the role, with functions redistributed to other leaders and customary severance provided.

Results of Operation and Financial Condition . On August 7, 2025, the Company issued a press release announcing its financial results for the three months ended June 30, 2025. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information included in

Entry into a Material Definitive Agreement. On June 18, 2025, ACI Worldwide, Inc. (the “ Company ”), ACI Worldwide Corp. (“ ACI Worldwide ”) and ACI Payments, Inc. (“ ACI Payments ”) entered into a Lender Addition and Acknowledgement Agreement with Bank of America, N.A., as administrative agent and incremental term A-2 lender, and BofA Securities, Inc. (or any of its designated affiliates), as the sole lead arranger and sole bookrunner, (the “ Agreement ”) to supplement the Second Amended and…

CFO — Robert Leibrock: The filing announces the appointment of an external CFO (Robert Leibrock) to replace the departing incumbent (Scott Behrens), representing a standard executive succession event rather than a sudden loss of leadership.

Results of Operation and Financial Condition . On May 8, 2025, the Company issued a press release announcing its financial results for the three months ended March 31, 2025. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “

CFO — Scott Behrens: The CFO is retiring with a stated plan to identify a successor, indicating an orderly succession rather than a sudden loss of executive leadership.

Results of Operation and Financial Condition . On February 27, 2025, the Company issued a press release announcing its financial results for the three months and year ended December 31, 2024. A copy of this press release is attached hereto as Exhibit 99.1. Following the publication of the earnings release, the Company hosted an earnings call in which its financial results were discussed. The investor presentation materials used for the call are attached as Exhibit 99.2. The foregoing informat…

Results of Operation and Financial Condition . On November 7, 2024, the Company issued a press release announcing its financial results for the three months ended September 30, 2024. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “

Results of Operation and Financial Condition . On August 1, 2024, the Company issued a press release announcing its financial results for the three months ended June 30, 2024. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “

Chief Product Officer — Debbie Guerra: The Chief Product Officer resigned with a named interim successor, representing an orderly executive departure rather than a sudden loss or routine appointment.

Other Events. On June 13, 2024, ACI Worldwide, Inc. (the "Company") announced the Board of Directors (the "Board") authorized the repurchase of $400 million in shares of the Company's common stock. The new approval includes $65 million remaining under the Company's existing share repurchase authorization. The share repurchases may be made at management's discretion in the open market, through privately negotiated transactions and Rule 10b5-1 plans. This authorization does not expire. A copy o…

Results of Operation and Financial Condition . On April 30, 2024, the Company issued a press release announcing its financial results for the three months ended March 31, 2024. A copy of this press release is attached hereto as Exhibit 99.1. The foregoing information (including the exhibits hereto) is being furnished under “