X0407 4 2023-06-10 0001005757 CSG SYSTEMS INTERNATIONAL INC CSGS 0001945791 Barger Rachel A. 169 INVERNESS DR. W SUITE 300 ENGLEWOOD CO 80112 1 0 Common Stock 2023-06-10 4 A 0 6724 0 A 6724 D Shares of restricted stock granted which will vest one day immediately preceding the first annual general meeting of the Company's stockholders occurring after the Award Date. Represents annual share grant plus a pro-rata portion of shares related to prior year service from date of appointment to the Board of Directors. /s/ Stacey Langley, attorney-in-fact for Rachel A. Barger 2023-06-12