CSGS insider transactions

Director Fawaz Marwan returned $2,814,655 worth of shares to the company (34,878 units at $80.70), closing all direct ownership in the company (SEC Form 4) (for tax liability)

EVP Pres NA Comm, Media & Tech Woods Michael Joseph returned $4,292,986 worth of shares to the company (53,197 units at $80.70), closing all direct ownership in the company (SEC Form 4) to satisfy withholding tax

Director Barnes David G returned $3,282,715 worth of shares to the company (40,678 units at $80.70), closing all direct ownership in the company (SEC Form 4) (withholding obligation)

Director Greenberg Samantha Joy returned $630,106 worth of shares to the company (7,808 units at $80.70), closing all direct ownership in the company (SEC Form 4) (withholding obligation)

Director Barger Rachel A. returned $1,172,732 worth of shares to the company (14,532 units at $80.70), closing all direct ownership in the company (SEC Form 4) (tax withholding)

EVP & CFO Tran Hai returned $10,481,339 worth of shares to the company (129,880 units at $80.70), closing all direct ownership in the company (SEC Form 4) to cover taxes

Director Tavares Silvio returned $1,820,592 worth of shares to the company (22,560 units at $80.70), closing all direct ownership in the company (SEC Form 4) (for withholding tax)

Director Conley Gregory A returned $1,193,714 worth of shares to the company (14,792 units at $80.70), closing all direct ownership in the company (SEC Form 4) (for tax liability)

EVP, General Counsel Bhattacharya Rasmani returned $5,500,673 worth of shares to the company (68,162 units at $80.70), closing all direct ownership in the company (SEC Form 4) to cover withholding tax

President & CEO Shepherd Brian A. returned $46,417,914 worth of shares to the company (575,191 units at $80.70), closing all direct ownership in the company (SEC Form 4) (for withholding tax)

SVP, Chief Accounting Officer Szwanek Lori returned $1,360,235 worth of shares to the company (16,855 units at $80.70), closing all direct ownership in the company (SEC Form 4) (tax withholding)

EVP, Chief Experience Officer Bauer Elizabeth A returned $8,220,021 worth of shares to the company (101,859 units at $80.70), closing all direct ownership in the company (SEC Form 4) to satisfy withholding tax

Director Yang Tseli Lily returned $1,490,045 worth of shares to the company (18,464 units at $80.70), closing all direct ownership in the company (SEC Form 4) (tax withholding)

Director Naik Rajan returned $2,330,455 worth of shares to the company (28,878 units at $80.70), closing all direct ownership in the company (SEC Form 4) to cover withholding tax

Director Song Haiyan returned $1,820,592 worth of shares to the company (22,560 units at $80.70), closing all direct ownership in the company (SEC Form 4) to satisfy tax liability

EVP Product & Strategy Officer Dunavant Chad returned $3,963,338 worth of shares to the company (49,112 units at $80.70), closing all direct ownership in the company (SEC Form 4) to cover withholding tax

SEC Form 4 filed by CSG Systems International Inc.

EVP Product & Strategy Officer Dunavant Chad covered exercise/tax liability with 1,474 shares, decreasing direct ownership by 3% to 49,112 units (SEC Form 4)

President & CEO Shepherd Brian A. was granted 37,175 shares, increasing direct ownership by 7% to 575,191 units (SEC Form 4)

EVP & CFO Tran Hai was granted 13,631 shares, increasing direct ownership by 12% to 129,880 units (SEC Form 4)

EVP Pres NA Comm, Media & Tech Woods Michael Joseph was granted 10,946 shares, increasing direct ownership by 26% to 53,197 units (SEC Form 4)

EVP, Chief Experience Officer Bauer Elizabeth A was granted 8,468 shares, increasing direct ownership by 9% to 101,859 units (SEC Form 4)

EVP, General Counsel Bhattacharya Rasmani was granted 8,468 shares, increasing direct ownership by 14% to 68,162 units (SEC Form 4)

EVP Product & Strategy Officer Dunavant Chad was granted 4,544 shares, increasing direct ownership by 10% to 50,586 units (SEC Form 4)

SVP, Chief Accounting Officer Szwanek Lori was granted 1,942 shares, increasing direct ownership by 12% to 17,733 units (SEC Form 4)

EVP Pres NA Comm, Media & Tech Woods Michael Joseph covered exercise/tax liability with 20,270 shares and was granted 6,746 shares (SEC Form 4)

EVP & CFO Tran Hai covered exercise/tax liability with 35,643 shares and was granted 11,373 shares (SEC Form 4)

SVP, Chief Accounting Officer Szwanek Lori covered exercise/tax liability with 1,068 shares, decreasing direct ownership by 6% to 15,791 units (SEC Form 4)

EVP Product & Strategy Officer Dunavant Chad was granted 911 shares and covered exercise/tax liability with 3,679 shares, decreasing direct ownership by 6% to 46,042 units (SEC Form 4)

President & CEO Shepherd Brian A. was granted 29,737 shares and covered exercise/tax liability with 114,600 shares, decreasing direct ownership by 14% to 538,016 units (SEC Form 4)

EVP, General Counsel Bhattacharya Rasmani was granted 5,190 shares and covered exercise/tax liability with 15,291 shares, decreasing direct ownership by 14% to 59,694 units (SEC Form 4)

EVP, Chief Experience Officer Bauer Elizabeth A covered exercise/tax liability with 15,689 shares and was granted 6,304 shares (SEC Form 4)

SVP, Chief Accounting Officer Szwanek Lori covered exercise/tax liability with 1,284 shares, decreasing direct ownership by 7% to 16,145 units (SEC Form 4)

EVP, General Counsel Bhattacharya Rasmani covered exercise/tax liability with 612 shares, decreasing direct ownership by 0.87% to 69,451 units (SEC Form 4)

EVP, Chief Experience Officer Bauer Elizabeth A covered exercise/tax liability with 280 shares, decreasing direct ownership by 0.27% to 102,776 units (SEC Form 4)

Director Yang Tseli Lily was granted 3,085 shares, increasing direct ownership by 20% to 18,464 units (SEC Form 4)

Director Tavares Silvio was granted 3,085 shares, increasing direct ownership by 16% to 22,560 units (SEC Form 4)

Director Song Haiyan was granted 3,085 shares, increasing direct ownership by 16% to 22,560 units (SEC Form 4)

Director Naik Rajan was granted 3,085 shares, increasing direct ownership by 12% to 28,878 units (SEC Form 4)

Director Greenberg Samantha Joy was granted 3,085 shares, increasing direct ownership by 65% to 7,808 units (SEC Form 4)

Director Fawaz Marwan was granted 3,085 shares, increasing direct ownership by 10% to 34,878 units (SEC Form 4)

Director Conley Gregory A was granted 3,085 shares, increasing direct ownership by 26% to 14,792 units (SEC Form 4)

Director Barnes David G was granted 3,085 shares, increasing direct ownership by 8% to 40,678 units (SEC Form 4)

Director Barger Rachel A. was granted 3,085 shares, increasing direct ownership by 27% to 14,532 units (SEC Form 4)

EVP Pres NA Comm, Media & Tech Woods Michael Joseph covered exercise/tax liability with 211 shares, decreasing direct ownership by 0.38% to 55,775 units (SEC Form 4)

SVP, Chief Accounting Officer Szwanek Lori covered exercise/tax liability with 332 shares and was granted 6,237 shares, increasing direct ownership by 51% to 17,429 units (SEC Form 4)

EVP Product & Strategy Officer Dunavant Chad covered exercise/tax liability with 1,347 shares and was granted 14,033 shares, increasing direct ownership by 35% to 48,810 units (SEC Form 4)

EVP Pres NA Comm, Media & Tech Woods Michael Joseph covered exercise/tax liability with 1,638 shares and was granted 30,403 shares, increasing direct ownership by 106% to 55,986 units (SEC Form 4)

EVP, General Counsel Bhattacharya Rasmani covered exercise/tax liability with 3,077 shares and was granted 28,065 shares, increasing direct ownership by 55% to 70,063 units (SEC Form 4)

EVP, Chief Experience Officer Bauer Elizabeth A covered exercise/tax liability with 4,206 shares and was granted 29,140 shares, increasing direct ownership by 32% to 103,056 units (SEC Form 4)

EVP & CFO Tran Hai covered exercise/tax liability with 7,285 shares and was granted 47,632 shares, increasing direct ownership by 40% to 140,519 units (SEC Form 4)

President & CEO Shepherd Brian A. was granted 124,728 shares and covered exercise/tax liability with 22,797 shares, increasing direct ownership by 20% to 622,879 units (SEC Form 4)

Director Cooper Ronald sold $599,580 worth of shares (9,000 units at $66.62) and gifted 1,000 shares, decreasing direct ownership by 20% to 40,561 units (SEC Form 4)

EVP Product & Strategy Officer Dunavant Chad covered exercise/tax liability with 2,067 shares and was granted 1,255 shares, decreasing direct ownership by 2% to 36,124 units (SEC Form 4)

EVP Pres NA Comm, Media & Tech Woods Michael Joseph was granted 309 shares and covered exercise/tax liability with 653 shares, decreasing direct ownership by 1% to 27,221 units (SEC Form 4)

EVP, General Counsel Bhattacharya Rasmani was granted 1,940 shares and covered exercise/tax liability with 4,497 shares, decreasing direct ownership by 5% to 45,075 units (SEC Form 4)

EVP, Chief Experience Officer Bauer Elizabeth A was granted 2,510 shares and covered exercise/tax liability with 5,740 shares, decreasing direct ownership by 4% to 78,122 units (SEC Form 4)

EVP & CFO Tran Hai was granted 5,247 shares and covered exercise/tax liability with 12,592 shares, decreasing direct ownership by 7% to 100,172 units (SEC Form 4)

President & CEO Shepherd Brian A. was granted 14,143 shares and covered exercise/tax liability with 33,389 shares, decreasing direct ownership by 4% to 520,948 units (SEC Form 4)

EVP Pres NA Comm, Media & Tech Woods Michael Joseph covered exercise/tax liability with 283 shares, decreasing direct ownership by 1% to 27,565 units (SEC Form 4)