DGX Form 4: Director adds 6 shares via DRIP; holds 2,698

Rhea-AI Filing Summary

Quest Diagnostics (DGX) director Robert B. Carter reported acquiring 6 shares of common stock on 10/21/2025 at $189.089 per share. The shares were obtained through a dividend reinvestment plan eligible for deferred reporting on Form 5 under Rule 16a-6; the transaction was reported early.

After this transaction, Carter beneficially owns 2,698 shares, held directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider CARTER ROBERT B

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	6	$189.089	$1K

Holdings After Transaction: Common Stock — 2,698 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 10/24/2025 - 06:09 PM Learn about SEC filing dates

FAQ

What insider transaction did DGX report?

A director, Robert B. Carter, acquired 6 shares of common stock.

When did the DGX insider transaction occur?

The transaction date was 10/21/2025.

What was the price per share in the DGX Form 4?

The reported price was $189.089 per share.

How many DGX shares does the insider own after the trade?

Post-transaction beneficial ownership is 2,698 shares, held directly.

What was the Form 4 transaction code for DGX?

The transaction code was A (acquired).

Was the DGX purchase under a plan?

Yes. The shares were acquired via a dividend reinvestment plan and were eligible for deferred reporting under Rule 16a-6.

Who signed the DGX Form 4 and when?

Signed by Sean D. Mersten, Attorney-in-Fact for Robert B. Carter, on 10/24/2025.

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^*

CARTER ROBERT B

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/21/2025

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	10/21/2025		A	V	6(1)	A	$189.089	2,698	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. Reflects shares that were acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker and eligible for deferred reporting on Form 5 under Rule 16a-6. The reporting person has chosen to report such transaction early on this Form 4.

Remarks:

	Sean D. Mersten, Attorney-in-Fact for Robert B. Carter	10/24/2025
	** 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.