X0306 4 2020-04-14 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 2020-04-14 4 S 0 3000 230.3772 D 37111 D Common Stock 2020-04-15 4 F 0 235 226.40 D 36876 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2020. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $230.00 to $230.94, inclusive. The reporting person undertakes to provide to Paycom Software, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Includes 34,789 unvested shares of restricted stock. Represents shares of common stock of the Issuer withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of 800 shares of restricted stock granted to the reporting person on April 15, 2016. No shares were issued or sold in this transaction. Includes 33,989 unvested shares of restricted stock. /s/ Jon D. Evans 2020-04-16