X0306 4 2021-04-15 0 0001590955 Paycom Software, Inc. PAYC 0001738164 Smith Bradley Scott 7501 W. MEMORIAL ROAD OKLAHOMA CITY OK 73142 0 1 0 0 Chief Information Officer Common Stock 2021-04-15 4 F 0 353 398.18 D 17575 D Common Stock 19879 I By Bradley Scott Smith Revocable Trust, dated October 30, 2017 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 1,200 shares of restricted stock granted to the reporting person on April 15, 2016. No shares were issued or sold in this transaction. Includes 16,126 unvested shares of restricted stock. The Bradley Scott Smith Revocable Trust, dated October 30, 2017 (the "Bradley Scott Smith Revocable Trust") is a revocable trust for the benefit of the reporting person, his spouse, and his children. The reporting person is the trustor and, with his spouse, a co-trustee of the Bradley Scott Smith Revocable Trust. Accordingly, the reporting person reports beneficial ownership of all of the shares of common stock held by the Bradley Scott Smith Revocable Trust but disclaims beneficial ownership except to the extent of his and his spouse's pecuniary interest therein. /s/ Bradley Scott Smith 2021-04-16