Insider Sells 26,165 Shares in DGX Form 144

Catherine T. Doherty reported sales of Common Stock under a Form 144 notice.

Rhea-AI Filing Summary

Catherine T. Doherty reported sales of Common Stock under a Form 144 notice. The excerpt lists three open-market transactions: 26,165 shares on 02/13/2026, 1,433 shares on 02/19/2026, and 632 shares on 03/03/2026. The broker listed is Fidelity Brokerage Services LLC.

Insights

Insider Transactions Analyst

Multiple small open-market dispositions by an affiliate were reported.

The filing lists three discrete sales by Catherine T. Doherty: 26,165 shares on 02/13/2026, 1,433 shares on 02/19/2026, and 632 shares on 03/03/2026. Transactions list Fidelity Brokerage Services LLC as the broker.

The excerpt provides trade counts and trade dates only; cash‑flow treatment and broader ownership changes are not stated in the excerpt. Subsequent filings or broker confirmations would show settlement details and whether any transactions were pursuant to planned arrangements.

FAQ

What did DGX Form 144 disclose about insider Catherine T. Doherty?

The Form 144 lists three sales of Common Stock by Catherine T. Doherty totaling three transactions on specific dates. It shows 26,165 shares on 02/13/2026, 1,433 shares on 02/19/2026, and 632 shares on 03/03/2026 via Fidelity.

Which broker handled the sales listed in the DGX Form 144?

The sales in the excerpt were processed through Fidelity Brokerage Services LLC. The filing shows Fidelity's address and lists the transactions as common stock dispositions executed on the broker's platform on the stated trade dates.

Do the Form 144 entries state the cash proceeds received?

The excerpt provides dollar figures adjacent to trade rows but does not label proceeds explicitly as net cash received. The listed numeric values appear per transaction, but the filing excerpt does not clarify gross or net proceeds treatment in the provided text.

Are these trades part of a restricted stock vesting or compensation plan?

The excerpt notes a line referencing Restricted Stock Vesting with an effective date of 02/23/2026, indicating some securities relate to compensation. The specific sold lots in the three trades are listed separately with their trade dates.

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

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Accepted by SEC EDGAR 03/05/2026 - 10:55 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	0001520897
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	QUEST DIAGNOSTICS INC
SEC File Number	001-12215
Address of Issuer	500 PLAZA DRIVE SECAUCUS NEW JERSEY 07094
Phone	9735202700
Name of Person for Whose Account the Securities are To Be Sold	Doherty Catherine T.
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	5558	1146115.18	109866320	03/05/2026	NYSE

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	02/23/2026	Restricted Stock Vesting	Issuer			5558	02/23/2026	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
Catherine T. Doherty 500 Plaza Drive Secaucus NJ 07094	Common	02/13/2026	26165	5393815.32
Catherine T. Doherty 500 Plaza Drive Secaucus NJ 07094	Common	02/19/2026	1433	293521.39
Catherine T. Doherty 500 Plaza Drive Secaucus NJ 07094	Common	03/03/2026	632	131285.36

144: Remarks and Signature

Remarks
Date of Notice	03/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/14/2025
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 Catherine Doherty
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)