CSG Systems International, Inc. Stock Agreements

Third Amended and Restated 1996 Employee Stock Purchase Plan, as adopted on May 18, 2022 (Filed With SEC on May 23, 2022)

Description of Capital Stock (Filed With SEC on February 21, 2020)

CSG SYSTEMS INTERNATIONAL, INC. SECOND AMENDED AND RESTATED 1996EMPLOYEE STOCK PURCHASE PLAN ARTICLE I GENERAL (Filed With SEC on May 23, 2011)

RESTRICTED STOCK AWARD AGREEMENT (Filed With SEC on May 9, 2011)

RESTRICTED STOCK AWARD AGREEMENT (Filed With SEC on August 7, 2007)

RESTRICTED STOCK AWARD AGREEMENT (Filed With SEC on May 9, 2007)

RESTRICTED STOCK AWARD AGREEMENT (Filed With SEC on August 5, 2005)

AMENDMENT OF STOCK OPTION AGREEMENT (Filed With SEC on January 18, 2005)

FIRST AMENDMENT TO RESTRICTED STOCK AWARD AGREEMENT (Filed With SEC on January 18, 2005)

CSG SYSTEMS INTERNATIONAL, INC. 1996 EMPLOYEE STOCK PURCHASE PLAN ARTICLE I GENERAL (Filed With SEC on August 6, 2004)

RESTRICTED STOCK AWARD AGREEMENT (Filed With SEC on May 15, 2003)

RESTRICTED STOCK AWARD AGREEMENT (Filed With SEC on November 14, 2002)

STOCK OPTION CANCELLATION AGREEMENT (Filed With SEC on November 14, 2002)

CSG SYSTEMS INTERNATIONAL,INC. 1996 EMPLOYEE STOCK PURCHASE PLAN ARTICLE I GENERAL (Filed With SEC on August 14, 2002)