X0304 4 2012-02-23 0001005757 CSG SYSTEMS INTERNATIONAL INC CSGS 0001382513 Ruble Joseph Thomas 9555 MAROON CIRCLE ENGLEWOOD CO 80112 1 EVP, Gen Counsel, Sectry & CAO Common Stock 2012-02-23 4 S 0 335 16.15 D 86636 D Common Stock 2012-02-23 4 S 0 100 16.16 D 86536 D Common Stock 2012-02-23 4 S 0 38 16.17 D 86498 D Common Stock 2012-02-23 4 S 0 965 16.18 D 85533 D Common Stock 2012-02-23 4 S 0 500 16.20 D 85033 D Common Stock 2012-02-23 4 S 0 200 16.21 D 84833 D Common Stock 2012-02-23 4 S 0 62 16.22 D 84771 D Common Stock 2012-02-23 4 S 0 100 16.2207 D 84671 D Common Stock 2012-02-23 4 S 0 100 16.23 D 84571 D Common Stock 2012-02-23 4 S 0 200 16.24 D 84371 D Common Stock 2012-02-23 4 S 0 100 16.2572 D 84271 D Common Stock 2012-02-23 4 S 0 315 16.39 D 83956 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. Joseph T. Ruble 2012-02-24