ADP officer plans 631-share Rule 144 stock sale

Officer Joseph DeSilva has filed a Rule 144 notice covering 631 ADP shares after recent vested stock and prior sales of 6,512 shares.

Rhea-AI Filing Summary

AUTOMATIC DATA PROCESSING INC (ADP) is the issuer for a planned sale of common stock under Rule 144 for the account of officer Joseph DeSilva. The notice covers 631 shares of common stock to be sold through Fidelity Brokerage Services LLC, following restricted stock vesting on September 1, 2026, and reports that 6,512 shares of common stock were sold in the past three months for $1,842,896.00.

Key Figures

Planned shares to be sold: 631 shares Shares sold in past 3 months: 6,512 shares Aggregate proceeds from past 3 months sales: $1,842,896.00 +1 more

4 metrics

Planned shares to be sold 631 shares Common stock to be sold under Rule 144 for Joseph DeSilva

Shares sold in past 3 months 6,512 shares Common stock sold on September 2, 2026

Aggregate proceeds from past 3 months sales $1,842,896.00 Total for 6,512 ADP shares sold on September 2, 2026

Security type Common stock ADP securities covered by the Form 144 notice

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact, aggregate

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 09/01/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

attorney-in-fact regulatory

"as attorney-in-fact for Joseph DeSilva"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

aggregate financial

"6512 | 1842896.00"

A combined total or summary created by adding together multiple parts or data points. Used as a noun and a verb, it means pooling individual items (sales, revenues, assets, transactions, or data) into one overall figure so stakeholders can see the big picture; like pouring many small jars into a single container to measure the total amount. Aggregate figures matter to investors because they show the overall size, trend, or exposure of a business or market rather than the detail of each component.

FAQ

What does the Form 144 filing disclose for ADP?

The filing discloses a planned Rule 144 sale of 631 shares of Automatic Data Processing Inc. common stock for officer Joseph DeSilva, to be sold through Fidelity Brokerage Services LLC after restricted stock vested on September 1, 2026.

Who is the reporting person in this ADP Form 144?

The notice is filed for the account of Joseph DeSilva, identified as an officer of Automatic Data Processing Inc. Fidelity Brokerage Services LLC is acting, with a representative signing as attorney-in-fact for DeSilva.

How many ADP shares are planned to be sold under this Form 144?

The Form 144 indicates a planned sale of 631 shares of Automatic Data Processing Inc. common stock, associated with restricted stock vesting on September 1, 2026.

What prior ADP share sales are reported in the last three months?

The filing reports that 6,512 shares of Automatic Data Processing Inc. common stock were sold on September 2, 2026, with aggregate proceeds of $1,842,896.00 during the past three months.

Which broker is handling the planned ADP stock sale for this Form 144?

The planned sale of Automatic Data Processing Inc. common stock is listed with Fidelity Brokerage Services LLC, located in Smithfield, Rhode Island, as the broker involved in the transaction.

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

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Available on EDGAR 09/03/2026 - 10:51 AM Accepted by SEC EDGAR 09/03/2026 - 10:50 AM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001805266
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	AUTOMATIC DATA PROCESSING INC
SEC File Number	001-05397
Address of Issuer	ONE ADP BOULVARD ROSELAND NEW JERSEY 07068
Phone	9739745000
Name of Person for Whose Account the Securities are To Be Sold	DeSilva Joseph
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	631	178490.97	397262737	09/03/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/01/2026	Restricted Stock Vesting	Issuer			631	09/01/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Joseph W. Desilva One ADP Boulevard Roseland NJ 07068	Common	09/02/2026	6512	1842896.00

144: Remarks and Signature

Remarks
Date of Notice	09/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/03/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Joseph DeSilva
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)