X0306 4 2017-08-25 0 0001590955 Paycom Software, Inc. PAYC 0001636588 Pezold Stacey M 7501 W. MEMORIAL ROAD OKLAHOMA CITY OK 73142 0 1 0 0 Chief Learning Officer Common Stock 2017-08-25 4 F 0 1644 72.77 D 126113 D Common Stock 1050 I By spouse Represents shares of common stock of Paycom Software, Inc. (the "Issuer") withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of 3,500 shares of restricted stock granted to the reporting person on April 26, 2017. No shares were issued or sold in this transaction. Includes 47,313 unvested shares of restricted stock. Represents shares held in individual retirement accounts for the benefit of the reporting person's spouse. /s/ Stacey Pezold 2017-08-29