X0306 4/A 2017-08-24 2017-08-25 0001005757 CSG SYSTEMS INTERNATIONAL INC CSGS 0001367571 Fawaz Marwan 9555 MAROON CIRCLE ENGLEWOOD CO 80112 1 Common Stock 3000 D Amended Form 4 being filed to correct original Form 4 filed August 25, 2017 due to a processing error where shares were reported as sold to cover a portion of the personal income tax withholding requirements. The vesting was reprocessed and Marwan H. Fawaz retained all shares that vested. This amended Form 4 reflects that no shares were sold. Marwan H. Fawaz 2017-09-14