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    SVP & General Counsel Prevoznik Michael E exercised 28,463 shares at a strike of $103.57 and sold $5,326,042 worth of shares (28,463 units at $187.12) (SEC Form 4)

    9/25/25 4:39:11 PM ET
    $DGX
    Medical Specialities
    Health Care
    Get the next $DGX alert in real time by email
    SEC FORM 4 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*
    PREVOZNIK MICHAEL E

    (Last) (First) (Middle)
    500 PLAZA DRIVE

    (Street)
    SECAUCUS NJ 07094

    (City) (State) (Zip)
    2. Issuer Name and Ticker or Trading Symbol
    QUEST DIAGNOSTICS INC [ DGX ]
    5. Relationship of Reporting Person(s) to Issuer
    (Check all applicable)
    Director 10% Owner
    X Officer (give title below) Other (specify below)
    SVP & General Counsel
    3. Date of Earliest Transaction (Month/Day/Year)
    09/23/2025
    4. If Amendment, Date of Original Filed (Month/Day/Year)
    6. Individual or Joint/Group Filing (Check Applicable Line)
    X Form filed by One Reporting Person
    Form filed by More than One Reporting Person
    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 09/23/2025 M(1) 28,288 A $103.57 66,405 D
    Common Stock 09/23/2025 S(1) 28,288 D $187.1222(2) 38,117 D
    Common Stock 09/24/2025 M(1) 175 A $103.57 38,292 D
    Common Stock 09/24/2025 S(1) 175 D $187.023(3) 38,117 D
    Common Stock 5,691(4) I 401(k)/SDCP
    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
    Non-Qualifed Stock Option (right to buy) $103.57 09/23/2025 M(1) 28,288 (5) 02/19/2028 Common Stock 28,288 $103.57 402 D
    Non-Qualifed Stock Option (right to buy) $103.57 09/24/2025 M(1) 175 (5) 02/19/2028 Common Stock 175 $103.57 227 D
    Explanation of Responses:
    1. This exercise and sale reported were effected pursuant to a Rule 10b5-1 sales plan adopted by the reporting person.
    2. This transaction was executed in multiple trades at prices ranging from $187.000 to $187.880. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
    3. This transaction was executed in multiple trades at prices ranging from $187.000 to $187.350. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
    4. These underlying shares were acquired on a periodic basis by the trustee of the Company's tax qualified Profit Sharing (401(k)) and/or Supplemental Deferred Compensation Plan. The information was obtained from the plan administrator as of a current date. The number of shares is based on the account balance of the Company stock fund under each Plan (which includes some money market instruments) divided by the market price of the Company's stock as of that date.
    5. The options vested in three annual installments beginning with the first on February 19, 2019, the second on February 19, 2020 and the final on February 19, 2021.
    Remarks:
    Sean D. Mersten, Attorney in Fact for Michael E. Prevoznik 09/25/2025
    ** 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.
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