STOCK TITAN

Quest Diagnostics (NYSE: DGX) SVP reports 188-share tax withholding

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Quest Diagnostics senior vice president and chief commercial officer Mark E. Delaney reported a small, automatic share disposition related to taxes. On the transaction date, 188 shares of common stock were withheld at a price of $204.86 per share to satisfy tax obligations from vesting restricted share units. After this tax-withholding event, Delaney directly owned 8,508 Quest Diagnostics common shares.

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Insider DELANEY MARK E
Role SVP & Chief Commercial Officer
Type Security Shares Price Value
Tax Withholding Common Stock 188 $204.86 $39K
Holdings After Transaction: Common Stock — 8,508 shares (Direct)
Footnotes (1)
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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).
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*
DELANEY MARK E

(Last) (First) (Middle)
500 PLAZA DRIVE
C/O QUEST DIAGNOSTICS INC

(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 & Chief Commercial Officer
3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026
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 03/02/2026 F 188(1) D $204.86 8,508 D
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
Explanation of Responses:
1. Sale of common stock to satisfy tax obligations arising from the vesting of a previous grant of restricted share units.
Remarks:
Sean D. Mersten, Attorney in Fact for Mark E. Delaney 03/04/2026
** 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.

FAQ

What insider transaction did DGX executive Mark E. Delaney report?

Mark E. Delaney reported a tax-related share disposition of 188 Quest Diagnostics common shares. The shares were withheld to cover tax obligations arising from the vesting of a prior restricted share unit grant.

Was the DGX Form 4 transaction an open-market sale of shares?

No, the transaction was not an open-market sale. It was a tax-withholding disposition where 188 shares were delivered to satisfy tax obligations from vesting restricted share units previously granted to the executive.

How many Quest Diagnostics shares were involved in the DGX Form 4 tax withholding?

The filing shows 188 shares of Quest Diagnostics common stock were used to satisfy tax obligations. These shares were tied to the vesting of an earlier restricted share unit award granted to Mark E. Delaney.

What price per share was used in the DGX insider tax-withholding transaction?

The Form 4 reports a transaction price of $204.86 per Quest Diagnostics common share. This price was applied to the 188 shares withheld to cover the executive’s tax liabilities from vesting restricted share units.

How many Quest Diagnostics shares does Mark E. Delaney own after this Form 4 transaction?

After the tax-withholding disposition, Mark E. Delaney directly owns 8,508 shares of Quest Diagnostics common stock. This figure reflects his holdings following the 188-share transaction used to satisfy his associated tax obligations.