AUTOMATIC DATA PROCESSING INC

Regulatory Filings • Sep 25, 2025

DEFA14A 1 adp014341-defa14a.htm DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS Automated Data Processing, Inc. - DEFA 14A

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 Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☑	Definitive Additional Materials
☐	Soliciting Material under §240.14a-12

Automatic Data Processing, 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 Rules 14a-6(i)(1) and 0-11

AUTOMATIC DATA PROCESSING, INC. 1 ADP BOULEVARD ROSELAND, NJ 07068
V78942-P36288

You invested in AUTOMATIC DATA PROCESSING, INC. and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the stockholder meeting to be held on November 12, 2025.

Get informed before you vote View the Combined Document containing Notice of 2025 Annual Meeting of Stockholders, Proxy Statement and Annual Report on Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to October 29, 2025. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

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Control #	●

Smartphone users Point your camera here and vote without entering a control number Vote Virtually at the Meeting* November 12, 2025 10:00 a.m., Eastern Standard Time Virtually at: www.virtualshareholdermeeting.com/ADP2025

• Please check the meeting materials for any special requirements for meeting attendance.

Vote at www.ProxyVote.com

THIS IS NOT A VOTABLE BALLOT

This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters.

Voting Items — 1.	Election of Directors.	Board Recommends
1a.	Peter Bisson	●	For
1b.	Maria Black	●	For
1c.	David V. Goeckeler	●	For
1d.	Linnie M. Haynesworth	●	For
1e.	Francine S. Katsoudas	●	For
1f.	Nazzic S. Keene	●	For
1g.	Karen S. Lynch	●	For
1h.	Thomas J. Lynch	●	For
1i.	Scott F. Powers	●	For
1j.	Carlos A. Rodriguez	●	For
1k.	Robert H. Swan	●	For
1l.	Sandra S. Wijnberg	●	For
2.	Advisory Vote on Executive Compensation.	●	For
3.	Ratification of the Appointment of Auditors.	●	For
NOTE: Proxies, when properly executed, will be voted as directed, or if no direction is given, will be voted as the Board of
Directors recommends. The proxies will vote in their discretion upon any and all other matters which may properly come
before the meeting or any adjournments or postponements thereof.

Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”.

V78943-P36288