PAYC

SEC source: 0000950170-24-105910 · ownership.xml · nonDerivative · entry 5

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,938,314

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F6 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $165.49 to $166.41, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105910 · ownership.xml · nonDerivative · entry 4

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,938,908

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $164.28 to $165.12, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105910 · ownership.xml · nonDerivative · entry 3

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,939,358

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $163.17 to $163.46, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105910 · ownership.xml · nonDerivative · entry 2

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,939,458

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $162.15 to $163.07, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105910 · ownership.xml · nonDerivative · entry 1

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,939,658

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $161.04 to $161.58, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 8

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,516,949

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $166.17 to $167.04, 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 in the transactions at each separate price within the range set forth in this footnote.

F6 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 7

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,517,249

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $164.56 to $165.55, 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 in the transactions at each separate price within the range set forth in this footnote.

F6 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 6

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,517,849

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $163.25 to $164.18, 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 in the transactions at each separate price within the range set forth in this footnote.

F6 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 5

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,518,299

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $162.15 to $163.10, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

F6 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 4

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,939,858

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $166.17 to $167.04, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 3

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,940,158

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $164.56 to $165.55, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 2

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,940,758

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $163.25 to $164.18, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105497 · ownership.xml · nonDerivative · entry 1

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,941,208

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $162.15 to $163.10, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 14

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,518,899

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F7 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $163.54 to $164.42, 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 in the transactions at each separate price within the range set forth in this footnote.

F8 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 13

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,519,344

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F6 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $162.44 to $163.41, 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 in the transactions at each separate price within the range set forth in this footnote.

F8 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 12

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,519,808

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $161.46 to $162.33, 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 in the transactions at each separate price within the range set forth in this footnote.

F8 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 11

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,520,508

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $160.09 to $160.40, 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 in the transactions at each separate price within the range set forth in this footnote.

F8 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 10

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,520,608

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $158.78 to $159.34, 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 in the transactions at each separate price within the range set forth in this footnote.

F8 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 9

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,520,708

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $156.14 to $157.03, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

F8 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 8

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,520,799

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F8 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 7

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,941,808

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F7 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $163.54 to $164.42, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 6

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,942,253

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F6 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $162.44 to $163.41, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 5

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,942,718

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $161.46 to $162.33, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 4

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,943,418

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $160.09 to $160.40, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 3

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,943,518

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $158.78 to $159.34, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 2

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,943,618

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $156.14 to $157.03, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-105232 · ownership.xml · nonDerivative · entry 1

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,943,708

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 10

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,520,849

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F6 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $157.13 to $157.97, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 9

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,521,421

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $156.13 to $157.12, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 8

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,521,587

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $155.32 to $155.41, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 7

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,521,596

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $154.32 to $155.31, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 6

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,522,153

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $153.32 to $154.31, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 5

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,943,758

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F6 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $157.13 to $157.97, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 4

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,944,330

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $156.13 to $157.12, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 3

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,944,496

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $155.32 to $155.41, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 2

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,944,505

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $154.32 to $155.31, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104736 · ownership.xml · nonDerivative · entry 1

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,945,062

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $153.32 to $154.31, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 10

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,522,799

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F6 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $160.05 to $161.04, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 9

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,522,899

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $159.38 to $160.04, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 8

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,523,349

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $157.23 to $158.16, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 7

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,524,213

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $156.42 to $157.19, 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 in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 6

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,524,699

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $155.77 to $156.41, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

F7 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 5

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,945,708

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F6 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $160.05 to $161.04, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 4

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,945,808

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $159.38 to $160.04, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 3

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,946,258

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $157.23 to $158.16, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 2

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,947,122

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $156.42 to $157.19, 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 in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104400 · ownership.xml · nonDerivative · entry 1

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,947,608

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F2 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $155.77 to $156.41, 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 (the "SEC"), upon request, full information regarding the number of shares sold in the transactions at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-104136 · ownership.xml · nonDerivative · entry 8

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,524,749

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F5 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $161.75 to $162.35, 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 in the transactions at each separate price within the range set forth in this footnote.

F6 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104136 · ownership.xml · nonDerivative · entry 7

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,524,905

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F4 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $160.77 to $161.72, 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 in the transactions at each separate price within the range set forth in this footnote.

F6 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.

SEC source: 0000950170-24-104136 · ownership.xml · nonDerivative · entry 6

Richison Chad R. · CIK 0001594487 · Director · CEO, President and Chairman · 10% owner

10b5-1 filing: Plan reported

Ownership: Indirect · By Ernest Group, Inc.

Disclosed balance after: 3,525,462

F1 · kind: The sales reported on this Form 4 were effected pursuant to a joint Rule 10b5-1 trading plan adopted by the reporting person and Ernest Group, Inc. ("Ernest Group") on February 16, 2024.

F3 · price: The price reported is a weighted average price. These shares of common stock were sold in multiple transactions at prices ranging from $159.76 to $160.75, 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 in the transactions at each separate price within the range set forth in this footnote.

F6 · ownership.nature: Represents shares of common stock owned by Ernest Group. The reporting person is the sole director of Ernest Group, and Ernest Group is wholly owned by the reporting person and certain trusts for the reporting person's children, for which the reporting person serves as trustee. The reporting person may be deemed to beneficially own the shares of common stock owned by Ernest Group.