Quest Diagnostics officer plans $3.02M share sale

The listed shares comprise restricted-stock vesting and a cash stock-option exercise, with a Rule 10b5-1 plan adoption or instruction date of August 11, 2026.

Available on EDGAR 11/09/2026 - 10:12 AM EST Accepted by SEC EDGAR 11/09/2026 - 10:11 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Quest Diagnostics Inc. (DGX) officer Patrick Plewman, identified in the remarks as the same person as Thomas P. Plewman, reported an intended sale of 11,717 common shares, with an aggregate market value of $3,015,252.78 and an approximate sale date of November 9, 2026. A Rule 10b5-1 plan adoption or instruction date of August 11, 2026, is listed.

The shares listed include 650 acquired through restricted stock vesting on February 24, 2025, and 11,067 acquired through a stock option exercise for cash on November 9, 2026.

Key Figures

Common shares to be sold: 11,717 shares Aggregate market value: $3,015,252.78 Shares outstanding: 110,019,073 shares +2 more

5 metrics

Common shares to be sold 11,717 shares Approximate sale date November 9, 2026

Aggregate market value $3,015,252.78 Shares to be sold

Shares outstanding 110,019,073 shares As reported in the securities information

Restricted stock vesting 650 shares Acquired February 24, 2025

Stock option exercise 11,067 shares Cash payment; acquired November 9, 2026

Key Terms

Rule 10b5-1, Restricted Stock Vesting, Stock Option Exercise, Aggregate Market Value

4 terms

Rule 10b5-1 regulatory

"Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Restricted Stock Vesting financial

"Nature of Acquisition Transaction: Restricted Stock Vesting"

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.

Stock Option Exercise financial

"Nature of Acquisition Transaction: Stock Option Exercise"

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.

Aggregate Market Value financial

"Number of Shares or Other Units To Be Sold | Aggregate Market Value"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

How many DGX shares are included in the proposed sale, and what is their aggregate market value?

The proposed sale covers 11,717 common shares with an aggregate market value of $3,015,252.78. The approximate sale date is November 9, 2026.

How were the DGX shares in the proposed sale acquired?

The listed shares include 650 shares acquired through restricted stock vesting on February 24, 2025, and 11,067 shares acquired through a stock option exercise for cash on November 9, 2026.

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

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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	0001497368
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	Plewman Patrick
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	11717	3015252.78	110019073	11/09/2026	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	02/24/2025	Restricted Stock Vesting	Issuer			650	02/24/2025	Compensation
Common	11/09/2026	Stock Option Exercise	Issuer			11067	11/09/2026	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks	Patrick Plewman and Thomas P. Plewman are one and the same person.
Date of Notice	11/09/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/11/2026
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/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Thomas P. Plewman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)