144 0002025321 XXXXXXXX LIVE 0001590955 Paycom Software, Inc. 001-36393 7501 W. MEMORIAL ROAD OKLAHOMA CITY OK 73142 (405) 722-6900 Peck Randall Officer Common Kestra Investment Services LLC

5707 Southwest parkway Bldg. 2 Austin TX 78735

890 227555.20 57819755 06/03/2025 NYSE Common 04/30/2023 Compensation Issuer N 23 05/10/2025 Compensation Common 02/23/2024 Compensation Issuer N 54 05/10/2025 Compensation Common 12/28/2023 Compensation Issuer N 349 05/10/2025 Compensation Common 04/30/2023 Compensation Issuer N 27 05/10/2025 Compensation Common 12/28/2023 Compensation Issuer N 437 05/10/2025 Compensation N Peck Living Trust/ Randall D Peck

7501 W Memorial Rd Oklahoma City OK 73142

Issuer 05/10/2025 338 87332.44 Shares sold from the following trust: Peck Living Trust 06/03/2025 /s/ Carmen Zamores as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Peck Randall