ADP EVP DeSilva sells 6,512 shares at $283

ADP’s executive vice president both received a new RSU award and sold shares under a pre-established Rule 10b5-1 trading plan.

Rhea-AI Filing Summary

AUTOMATIC DATA PROCESSING INC (ADP) executive vice president Joseph DeSilva reported several common stock transactions. On September 2, 2026 he sold 6,512 shares at $283.00 per share under a Rule 10b5-1 trading plan adopted in September 2025. On September 1, 2026 he received a grant of 5,089 restricted stock units that convert one-for-one into common stock and vest ratably over three years, and 7,482.01 shares were withheld or delivered at $283.49 per share to cover exercise price or tax obligations.

Insider Trade Summary 10b5-1

Net Seller: 6,512 shares

Net Sell 3 txns

Insider DeSilva Joseph

Role Executive VP

Sold 6,512 shs ($1.84M)

Type	Security	Shares	Price	Value
Sale	Common Stock F2	6,512	$283.00	$1.84M
Grant/Award	Common Stock F1	5,089	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	7,482.01	$283.49	$2.12M

Holdings After Transaction: Common Stock — 19,455.188 shares (Direct)

Footnotes (2)

1. 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.
2. 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.

Key Figures

Shares sold: 6,512 shares Sale price per share: $283.00 per share RSU award: 5,089 units +2 more

5 metrics

Shares sold 6,512 shares Common stock sale on September 2, 2026

Sale price per share $283.00 per share Price for 6,512-share sale on September 2, 2026

RSU award 5,089 units Restricted stock units granted September 1, 2026, vesting over 3 years

Shares withheld or delivered 7,482.01 shares Code F transaction for exercise price or tax liability on September 1, 2026

Code F transaction price $283.49 per share Price used for 7,482.01-share payment of exercise price or tax liability

Key Terms

Rule 10b5-1 trading plan, restricted stock units, vest ratably, payment of exercise price or tax liability

4 terms

Rule 10b5-1 trading plan regulatory

"transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"In the form of restricted stock units, which are convertible into common stock"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

vest ratably financial

"restricted stock units ... vest ratably over 3 years"

payment of exercise price or tax liability financial

"Payment of exercise price or tax liability by delivering or withholding securities"

FAQ

What did ADP executive Joseph DeSilva sell in this Form 4 filing for ADP?

He sold 6,512 shares of Automatic Data Processing common stock on September 2, 2026 at a price of $283.00 per share, reported as a sale in the open market or a private transaction.

What equity award did Joseph DeSilva receive from ADP in this Form 4?

On September 1, 2026, Joseph DeSilva received 5,089 restricted stock units, convertible into ADP common stock on a one-for-one basis and vesting ratably over 3 years.

Were the ADP share sales by Joseph DeSilva under a Rule 10b5-1 plan?

Yes. A footnote states the transactions reported as sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Joseph DeSilva in September 2025.

Why were 7,482.01 ADP shares disposed of in the code F transaction?

The Form 4 reports 7,482.01 shares as disposed of on September 1, 2026 to provide payment of exercise price or tax liability by delivering or withholding securities, at a reported price of $283.49 per share.

Does the filing show how many ADP shares Joseph DeSilva owns after these transactions?

No. For each reported transaction, the field for total shares following transaction is left blank, so the filing does not state DeSilva’s resulting ADP share ownership.

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Available on EDGAR 09/03/2026 - 04:14 PM Accepted by SEC EDGAR 09/03/2026 - 04:06 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

DeSilva Joseph

(Last) (First) (Middle)

ONE ADP BOULEVARD

(Street)

ROSELAND NEW JERSEY 07068

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AUTOMATIC DATA PROCESSING INC [ ADP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive VP

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/01/2026		A		5,089(1)	A	$0.0000	33,449.198	D
Common Stock	09/01/2026		F		7,482.01	D	$283.49	25,967.188	D
Common Stock	09/02/2026		S		6,512(2)	D	$283	19,455.188	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. 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.

	David Kwon (POA on File)	09/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)