ADP Form 144: Sale of 543 Common Shares

ADP filed a Form 144 reporting the sale of 543 shares of Common Stock.

Rhea-AI Filing Summary

ADP filed a Form 144 reporting the sale of 543 shares of Common Stock. The filing lists related equity events: stock option exercises on 05/10/2022, 08/08/2022 and 08/09/2022, and restricted stock vesting on 09/01/2022. It also records two sales of 543 shares each on 02/17/2026 and 03/16/2026 with proceeds of $115,349.49 and $113,188.35, respectively.

Key Figures

Offered/Reported shares: 543 shares Proceeds on 02/17/2026: $115,349.49 Proceeds on 03/16/2026: $113,188.35 +2 more

5 metrics

Offered/Reported shares 543 shares listed for sale on Form 144 (04/14/2026 line item)

Proceeds on 02/17/2026 $115,349.49 sale of 543 shares reported for Christopher D'Ambrosio

Proceeds on 03/16/2026 $113,188.35 sale of 543 shares reported for Christopher D'Ambrosio

Equity events in 2022 386; 90; 33; 34 shares stock option exercises and restricted stock vesting dated 05/10/2022, 08/08/2022, 08/09/2022, 09/01/2022

Exchange listed NASDAQ security market indicated on filing

Key Terms

Form 144, Stock Option Exercise, Restricted Stock Vesting, Proceeds

4 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Stock Option Exercise | Issuer | 05/10/2022"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Restricted Stock Vesting financial

"Restricted Stock Vesting | Issuee | 09/01/2022"

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.

Proceeds financial

"543 | 115349.49"

FAQ

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

What does ADP's Form 144 report?

It reports an intended sale of 543 shares of ADP Common Stock. The filing also lists prior option exercises and restricted stock vesting dated in 2022 and two recent sales on 02/17/2026 and 03/16/2026.

Who appears as the seller in the Form 144 filing for ADP?

The filing names Christopher D'Ambrosio in the recent sales entries. Those entries show two dispositions of 543 shares each with reported proceeds of $115,349.49 and $113,188.35.

How many shares and proceeds are shown for the recent ADP sales?

Each recent sale listed is 543 shares. The proceeds recorded are $115,349.49 on 02/17/2026 and $113,188.35 on 03/16/2026 as shown in the filing.

Does the Form 144 list how the reported ADP shares were acquired?

Yes. The filing lists stock option exercises on 05/10/2022, 08/08/2022, and 08/09/2022 and a restricted stock vesting on 09/01/2022 as the equity events tied to the securities.

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

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Accepted by SEC EDGAR 04/14/2026 - 11:01 AM EDT 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	0001866614
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	D'Ambrosio Christopher
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	543	106286.82	402644364	04/14/2026	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	05/10/2022	Stock Option Exercise	Issuer			34	05/10/2022	Cash
Common	08/08/2022	Stock Option Exercise	Issuer			33	08/08/2022	Cash
Common	08/09/2022	Stock Option Exercise	Issuer			90	08/09/2022	Cash
Common	09/01/2022	Restricted Stock Vesting	Issuee			386	09/01/2022	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
Christopher D'Ambrosio One ADP Boulevard Roseland NJ 07068	Common	02/17/2026	543	115349.49
Christopher D'Ambrosio One ADP Boulevard Roseland NJ 07068	Common	03/16/2026	543	113188.35

144: Remarks and Signature

Remarks
Date of Notice	04/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/07/2025
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/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Christopher D'Ambrosio
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)