Automatic Data Processing: Bonarti sells 6,812 shares

The reported option position after the exercise was zero, and the common shares acquired were sold on the same day.

Available on EDGAR 11/06/2026 - 04:06 PM EST Accepted by SEC EDGAR 11/06/2026 - 04:05 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Automatic Data Processing Inc. Corporate Vice President Michael A. Bonarti exercised 6,812 stock options at an exercise price of $206.86 per share on November 5, 2026, acquiring 6,812 common shares, then sold 6,812 shares at $310 per share. The transactions were effected under a Rule 10b5-1 trading plan adopted in September 2025. The reported remaining option position was zero.

Insider Trade Summary 10b5-1

Exercise and Sale: 6,812 shares ($703K approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Bonarti Michael A

Role Corporate Vice President

Sold 6,812 shs ($2.11M)

Approx. gross sale proceeds $2.11M

Approx. exercise cost $1.41M

Approx. pre-tax spread $703K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy)	6,812	$206.86	$1.41M
Exercise	Common Stock F1	6,812	$206.86	$1.41M
Sale	Common Stock F1	6,812	$310.00	$2.11M

Holdings After Transaction: Stock Option (Right to Buy) — 0 contracts (Direct); Common Stock — 81,849.332 shares (Direct)

Footnotes (1)

1. F1. 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

Stock options exercised: 6,812 options Exercise price: $206.86 per share Common shares acquired: 6,812 shares +3 more

6 metrics

Stock options exercised 6,812 options November 5, 2026

Exercise price $206.86 per share Stock options exercised on November 5, 2026

Common shares acquired 6,812 shares November 5, 2026

Common shares sold 6,812 shares November 5, 2026

Sale price $310 per share November 5, 2026

Reported remaining option position 0 options Following the November 5, 2026 transaction

Key Terms

Rule 10b5-1 trading plan, Stock Option (Right to Buy), derivative security

3 terms

Rule 10b5-1 trading plan regulatory

"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.

Stock Option (Right to Buy) financial

"Stock Option (Right to Buy)"

derivative security financial

"Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ADP shares did Michael A. Bonarti sell and at what price?

Michael A. Bonarti sold 6,812 ADP common shares at $310 per share on November 5, 2026. The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted in September 2025.

What was the exercise price for Michael A. Bonarti's ADP stock options?

He exercised 6,812 stock options at $206.86 per share on November 5, 2026, acquiring 6,812 common shares. The reported remaining option position after the exercise was zero.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

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^*

Bonarti Michael A

(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)
	Corporate Vice President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/05/2026

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	11/05/2026		M		6,812(1)	A	$206.86	88,661.332	D
Common Stock	11/05/2026		S		6,812(1)	D	$310	81,849.332	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
Stock Option (Right to Buy)	$206.86	11/05/2026		M			6,812	09/01/2022	08/31/2031	Common Stock	6,812	$206.86	0.0000	D

Explanation of Responses:

1. 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)	11/06/2026
	** 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)