Quest Diagnostics (NYSE: DGX) SVP reports small 39-share acquisition

Rhea-AI Filing Summary

Quest Diagnostics SVP Karthik Kuppusamy reported a small acquisition of 39 shares of common stock at $194.699 per share. The filing describes this as a small acquisition under Rule 16a-6 related to a dividend reinvestment plan. Following the transaction, he holds 13,490 shares directly, plus indirect holdings through a trust and the company’s 401(k) plan.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider KUPPUSAMY KARTHIK

Role SVP, Clinical Solutions

Type	Security	Shares	Price	Value
L	Common Stock	39	$194.699	$8K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 13,490 shares (Direct, null); Common Stock — 1,751 shares (Indirect, 401(k))

Footnotes (1)

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. The amount includes exempt purchases made under the Company's stock purchase plan since the date of the reporting person's last filing on Form 4. These underlying shares were acquired on a periodic basis by the trustee of the Company's tax qualified Profit Sharing (401(k)) 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 the Plan (which includes some money market instruments) divided by the market price of the Company's stock as of that date.

Key Figures

Small acquisition shares: 39 shares Acquisition price: $194.699 per share Direct holdings after transaction: 13,490 shares +2 more

5 metrics

Small acquisition shares 39 shares Common stock acquired under Rule 16a-6

Acquisition price $194.699 per share Price for 39-share small acquisition

Direct holdings after transaction 13,490 shares Common stock held directly following acquisition

Trust holdings 358 shares Common stock held indirectly by trust

401(k) plan holdings 1,751 shares Common stock equivalent in Profit Sharing (401(k)) Plan

Key Terms

Rule 16a-6, dividend reinvestment plan, stock purchase plan, Profit Sharing (401(k)) Plan, +1 more

5 terms

Rule 16a-6 regulatory

"Small acquisition under Rule 16a-6"

dividend reinvestment plan financial

"shares that were acquired pursuant to a dividend reinvestment plan"

A dividend reinvestment plan lets shareholders automatically use cash dividends to buy more shares of the same company instead of receiving the money. It matters to investors because it turns regular payouts into a steady way to grow ownership and take advantage of compound returns—like having your savings automatically buy additional slices of a pie over time—while often reducing transaction costs and smoothing purchase timing.

stock purchase plan financial

"includes exempt purchases made under the Company's stock purchase plan"

Profit Sharing (401(k)) Plan financial

"Company's tax qualified Profit Sharing (401(k)) Plan"

small acquisition financial

"transaction code description: Small acquisition under Rule 16a-6"

Form 4 Insider Transactions: What Each Field Means →

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^*

KUPPUSAMY KARTHIK

(Last) (First) (Middle)

500 PLAZA DRIVE

C/O QUEST DIAGNOSTICS INC

(Street)

SECAUCUS NEW JERSEY 07094

(City) (State) (Zip)

UNITED STATES

(Country)

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, Clinical Solutions

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	04/20/2026		L	V	39(1)	A	$194.699	13,490(2)	D
Common Stock								1,751(3)	I	401(k)
Common Stock								358	I	By Trust

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.

2. The amount includes exempt purchases made under the Company's stock purchase plan since the date of the reporting person's last filing on Form 4.

3. These underlying shares were acquired on a periodic basis by the trustee of the Company's tax qualified Profit Sharing (401(k)) 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 the Plan (which includes some money market instruments) divided by the market price of the Company's stock as of that date.

Remarks:

	Sean D. Mersten, Attorney in Fact for Karthik Kuppusamy	04/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did DGX executive Karthik Kuppusamy report?

Karthik Kuppusamy reported a small acquisition of 39 shares of Quest Diagnostics common stock. The shares were acquired at $194.699 each and are described as a small acquisition under Rule 16a-6 connected to a dividend reinvestment plan.

At what price were the newly acquired Quest Diagnostics (DGX) shares recorded?

The 39 newly acquired Quest Diagnostics shares were recorded at $194.699 per share. This transaction is categorized as a small acquisition under Rule 16a-6, linked to a dividend reinvestment plan administered by the reporting person’s broker.

How many Quest Diagnostics (DGX) shares does Karthik Kuppusamy hold directly after this filing?

After the reported transaction, Karthik Kuppusamy holds 13,490 Quest Diagnostics common shares directly. This figure comes from the Form 4 table showing the total shares following the small acquisition transaction coded under Rule 16a-6.

What indirect Quest Diagnostics (DGX) holdings does Karthik Kuppusamy report?

He reports 358 shares held indirectly through a trust and 1,751 shares held indirectly via the company’s tax-qualified Profit Sharing (401(k)) Plan. The 401(k) amount is based on the plan stock fund balance divided by the company’s stock price as of a current date.

What does Rule 16a-6 mean in Karthik Kuppusamy’s DGX Form 4?

Rule 16a-6 allows certain small acquisitions, such as dividend reinvestment plan purchases, to be reported later on Form 5. In this case, Karthik Kuppusamy chose to report the 39-share small acquisition early on Form 4 instead of waiting.