Form 4 Filing for ACI WORLDWIDE, INC.

Mary Harman, a director at ACI WORLDWIDE, INC., acquired 5,720 shares of restricted stock units on June 2, 2026. These shares were awarded under the company's 2020 Equity and Performance Incentive Plan. The restricted stock units vest on the earlier of an anniversary of the grant date, the day before the next annual stockholder meeting, or a change in control. Ms. Harman acquired these shares with a transaction price of $0.0, and following this transaction, she owns 40,108 shares. This filing is a Form 4, indicating a change in beneficial ownership.