Form 4 Filing for ACI WORLDWIDE, INC.

Thomas W Warsop III, President and CEO of ACI WORLDWIDE, INC., reported a net acquisition of 107,193 shares of Common Stock on April 13, 2026. This transaction follows the grant of 176,755 performance shares earned upon meeting objectives between May 2023 and February 2026. Additionally, 69,552 shares were surrendered to cover tax liabilities due upon vesting. Following these transactions, Warsop holds 491,074 shares directly. The performance shares were granted under the company's 2020 Equity and Performance Incentive Plan.