X0306 4 2017-08-16 0001005757 CSG SYSTEMS INTERNATIONAL INC CSGS 0001600337 Barnes David G 9555 MAROON CIRCLE ENGLEWOOD CO 80112 1 Common Stock 2017-08-16 4 A 0 3000 38.72 A 11800 D 3,000 shares of restricted stock were granted to David G. Barnes on August 16, 2017. All 3,000 shares vest on the first anniversary of the grant date. David G. Barnes 2017-09-18