X0306 4 2019-07-08 0 0001590955 Paycom Software, Inc. PAYC 0001737656 Evans Jon 7501 W. MEMORIAL ROAD OKLAHOMA CITY OK 73142 0 1 0 0 Chief Operating Officer Common Stock 2019-07-08 4 F 0 1863 239.06 D 30211 D Common Stock 2019-07-09 4 S 0 321 239.2669 D 29890 D Common Stock 2019-07-09 4 S 0 1379 240.4832 D 28511 D Common Stock 2019-07-09 4 S 0 400 241.4075 D 28111 D 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 4,200 shares of restricted stock granted to the reporting person on July 8, 2015. No shares were issued or sold in this transaction. Includes 22,789 unvested shares of restricted stock. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2018. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $238.89 to $239.43, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $240.09 to $240.92, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $241.23 to $241.68, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Jon D. Evans 2019-07-10