X0304 4 2012-02-22 0001005757 CSG SYSTEMS INTERNATIONAL INC CSGS 0001382513 Ruble Joseph Thomas 9555 MAROON CIRCLE ENGLEWOOD CO 80112 1 EVP, Gen Counsel, Sectry & CAO Common Stock 2012-02-22 4 S 0 100 16.11 D 91238 D Common Stock 2012-02-22 4 S 0 300 16.12 D 90938 D Common Stock 2012-02-22 4 S 0 500 16.125 D 90438 D Common Stock 2012-02-22 4 S 0 200 16.13 D 90238 D Common Stock 2012-02-22 4 S 0 100 16.15 D 90138 D Common Stock 2012-02-22 4 S 0 100 16.16 D 90038 D Common Stock 2012-02-22 4 S 0 100 16.17 D 89938 D Common Stock 2012-02-22 4 S 0 100 16.189 D 89838 D Common Stock 2012-02-22 4 S 0 307 16.20 D 89531 D Common Stock 2012-02-22 4 S 0 100 16.21 D 89431 D Common Stock 2012-02-22 4 S 0 300 16.22 D 89131 D Common Stock 2012-02-22 4 S 0 700 16.23 D 88431 D Common Stock 2012-02-22 4 S 0 100 16.24 D 88331 D Common Stock 2012-02-22 4 F 0 1360 16.36 D 86971 D The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. The shares sold in Table 1 are pursuant to a 10b5-1 plan. 4,375 shares of restricted stock held by Mr. Joseph T. Ruble vested on February 22, 2012. The sold shares reported on this form represent those shares sold to cover a portion of the personal income tax withholding requirements as a result of such vesting. Joseph T. Ruble 2012-02-23