Maria Black - 01 Sep 2026 Form 4 Insider Report for AUTOMATIC DATA PROCESSING INC (ADP)

Reporting relationship: President & CEO
Issuer ticker: ADP
Reported as of: 01 Sep 2026
Net transaction value: -$8,373,873
SEC form: 4
Accepted by SEC: 03 Sep 2026, 16:06:45 UTC
Prior SEC filing: 06 Aug 2026
Source filing: View source filing
Reporting owner signature: David Kwon (POA on File)

Key filing fact

Maria Black filed Form 4 for AUTOMATIC DATA PROCESSING INC (ADP) on 03 Sep 2026.

Key facts

This page summarizes Maria Black's Form 4 filing for AUTOMATIC DATA PROCESSING INC (ADP).
16 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Sep 2026, 16:06.

Change

Previous filing in this sequence was filed on 06 Aug 2026.
Current net transaction value: -$8,373,873.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001608466 Primary reporting owner

Black Maria

Relationship: President & CEO
Address: ONE ADP BOULEVARD, ROSELAND
Signature: David Kwon (POA on File)
Signature date: 03 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ADP transaction

Common Stock

Award

Transaction value
Shares: +21,689
Change %: +18%
Price: $0.000000^*
Shares after: 141,650
Date: 01 Sep 2026
Ownership: Direct
Footnotes: F1

ADP transaction

Common Stock

Tax liability

Transaction value
Shares: -31,215
Change %: -22%
Price: $283.49^*
Shares after: 110,434
Date: 01 Sep 2026
Ownership: Direct

ADP transaction

Common Stock

Sale

Transaction value: $59,751
Shares: -214
Change %: -0.19%
Price: $279.21
Shares after: 110,220
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $71,538
Shares: -256
Change %: -0.23%
Price: $279.44
Shares after: 109,964
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $156,483
Shares: -559
Change %: -0.51%
Price: $279.93
Shares after: 109,405
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $171,936
Shares: -610
Change %: -0.56%
Price: $281.86
Shares after: 108,795
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $195,012
Shares: -700
Change %: -0.64%
Price: $278.59
Shares after: 108,095
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $214,089
Shares: -760
Change %: -0.7%
Price: $281.70
Shares after: 107,335
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $220,291
Shares: -786
Change %: -0.73%
Price: $280.27
Shares after: 106,549
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $286,668
Shares: -1,018
Change %: -0.96%
Price: $281.60
Shares after: 105,531
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $285,646
Shares: -1,018
Change %: -0.96%
Price: $280.60
Shares after: 104,513
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $335,185
Shares: -1,193
Change %: -1.1%
Price: $280.96
Shares after: 103,320
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $416,919
Shares: -1,483
Change %: -1.4%
Price: $281.13
Shares after: 101,837
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $810,673
Shares: -2,898
Change %: -2.8%
Price: $279.74
Shares after: 98,939
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $2,175,540
Shares: -7,724
Change %: -7.8%
Price: $281.66
Shares after: 91,215
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

ADP transaction

Common Stock

Sale

Transaction value: $2,974,142
Shares: -10,591
Change %: -12%
Price: $280.82
Shares after: 80,624
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 2 footnotes

Footnote F1

In the form of restricted stock units, which are convertible into common stock on a one-for-one basis and vest ratably over 3 years.

Footnote F2

The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025.