Company: PAYX
Filing Date: 2025-08-29
Form Type: DEF 14A
Source: 0001193125-25-191789
Chunk: 0

Company: PAYCHEX INC
Filing Date: 2025-08-29
Form: DEF 14A
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box:

| ☐ | Preliminary Proxy Statement |

| ☐ | Confidential, for Use of the Commission Only (as permitted by Rule14a-6(e)(2)) |

| ☒ | Definitive Proxy Statement |

| ☐ | Definitive Additional Materials |

| ☐ | Soliciting Material under§240.14a-12 |

Paychex, Inc. (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check all boxes that apply):

| ☒ | No fee required. |

| ☐ | Fee paid previously with preliminary materials. |

| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules14a-6(i)(1)and0-11. |

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

| WHEN   Thursday, October 9, 2025 9:30 a.m. Eastern Time   WHERE   Online only at www.virtualshareholdermeeting.com/PAYX2025   IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE 2025 ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON OCTOBER 9, 2025.   On or about August 29, 2025, we will mail to all stockholders a Notice of Internet Availability of Proxy Materials, which contains instructions for accessing our proxy materials on the Internet and voting by telephone or on the Internet. The Notice of Internet Availability of Proxy Materials also contains instructions for requesting a printed set of proxy materials. Paychex, Inc.’s Proxy Statement and Annual Report for the year ended May 31, 2025, are available at www.proxyvote.com and https://investor.paychex.com.   Our principal executive offices are located at 911 Panorama Trail South, Rochester, NY 14625-2396. |     | MATTERS TO BE VOTED ON:   The principal business of the 2025 Annual Meeting of Stockholders (the “Annual Meeting”) will be: