ADP VP sells 1,872 shares, gets 2,565 RSUs

ADP’s corporate vice president reported an RSU grant, tax-withholding share disposition, and a planned sale of common stock under a Rule 10b5-1 trading plan.

Rhea-AI Filing Summary

AUTOMATIC DATA PROCESSING INC (ADP) reported insider equity transactions by corporate vice president Christopher D'Ambrosio. On September 1, 2026, he received 2,565 restricted stock units that vest over three years and are convertible into common stock one-for-one, and 1,735.776 shares were delivered or withheld to pay an exercise price or tax liability. On September 2, 2026, he sold 1,872 common shares at $283.00 per share in a transaction effected under a Rule 10b5-1 trading plan adopted in September 2025.

Insider Trade Summary 10b5-1

Net Seller: 1,872 shares

Net Sell 3 txns

Insider D'Ambrosio Christopher

Role Corp. VP

Sold 1,872 shs ($530K)

Type	Security	Shares	Price	Value
Sale	Common Stock F2	1,872	$283.00	$530K
Grant/Award	Common Stock F1	2,565	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	1,735.776	$283.49	$492K

Holdings After Transaction: Common Stock — 9,927.672 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: 1,872 shares Sale price: $283.00 per share RSUs granted: 2,565 units +3 more

6 metrics

Shares sold 1,872 shares Common stock sale on September 2, 2026

Sale price $283.00 per share Price for 1,872 common shares sold on September 2, 2026

RSUs granted 2,565 units Restricted stock unit award on September 1, 2026, vesting over 3 years

Shares for exercise price or tax liability 1,735.776 shares Disposition on September 1, 2026 to pay exercise price or tax liability

Reference price for tax/exercise disposition $283.49 per share Per-share figure on 1,735.776-share transaction on September 1, 2026

Rule 10b5-1 plan adoption September 2025 Plan under which the reported sale was effected

Key Terms

restricted stock units, Rule 10b5-1 trading plan, tax liability

3 terms

restricted stock units financial

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

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.

Rule 10b5-1 trading plan regulatory

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

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.

tax liability financial

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

FAQ

What insider transactions did ADP (AUTOMATIC DATA PROCESSING INC) report for Christopher D'Ambrosio?

ADP reported that corporate vice president Christopher D'Ambrosio received 2,565 restricted stock units on September 1, 2026, had 1,735.776 shares delivered or withheld to cover an exercise price or tax liability, and sold 1,872 common shares at $283.00 on September 2, 2026.

Was the recent ADP insider stock sale by Christopher D'Ambrosio under a Rule 10b5-1 plan?

Yes. The Form 4 states that the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by Christopher D'Ambrosio in September 2025, and the plan status box affirming Rule 10b5-1 use is checked.

How many ADP shares did Christopher D'Ambrosio sell and at what price?

On September 2, 2026, Christopher D'Ambrosio sold 1,872 shares of ADP common stock at a price of $283.00 per share, characterized as a sale in the open market or a private transaction.

What equity award did Christopher D'Ambrosio receive from ADP on September 1, 2026?

He received a grant of 2,565 restricted stock units, convertible into ADP common stock on a one-for-one basis. The award vests ratably over three years, meaning portions of the units vest each year during that period.

Why were 1,735.776 ADP shares reported as disposed of by Christopher D'Ambrosio?

A total of 1,735.776 shares of ADP common stock were reported as disposed of on September 1, 2026 to provide payment of an exercise price or tax liability by delivering or withholding securities, consistent with the Form 4’s transaction description.

Does the Form 4 show Christopher D'Ambrosio’s total ADP holdings after these transactions?

No. For each reported transaction, the line for shares beneficially owned following the transaction is left blank, so the filing does not state his total ADP common stock holdings after these events.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

D'Ambrosio Christopher

(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)
	Corp. 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		2,565(1)	A	$0.0000	13,535.448	D
Common Stock	09/01/2026		F		1,735.776	D	$283.49	11,799.672	D
Common Stock	09/02/2026		S		1,872(2)	D	$283	9,927.672	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)