X0508 4 2025-12-24 0 0000935036 ACI WORLDWIDE, INC. ACIW 0002080452 Leibrock Robert William 6060 COVENTRY DRIVE ELKHORN NE 68022 0 1 0 0 Chief Financial Officer 0 Common Stock 2025-12-24 4 D 0 2155 48.87 D 162343 D Represents shares surrendered by the reporting person to pay the tax liability due upon the vesting of 6,855 shares, representing one twelfth of the restricted stock units granted on September 24, 2025. Robert William Leibrock 2025-12-30