[Form 4] QUEST DIAGNOSTICS INC Insider Trading Activity

Rhea-AI Filing Summary

Quest Diagnostics Executive Vice President & CFO Sam Samad reported an acquisition of 108 shares of common stock on April 20, 2026, at $194.698 per share. After this award, he holds 33,376 shares directly.

Footnotes state the transaction represents an award of restricted share units and reflects shares acquired through a dividend reinvestment plan administered by his broker, which he chose to report early rather than on a later Form 5.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider SAMAD SAM

Role Executive Vice President & CFO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	108	$194.698	$21K

Holdings After Transaction: Common Stock — 33,376 shares (Direct, null)

Footnotes (1)

1. Represents an award of restricted share units. 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. The reporting person has chosen to report such transaction early on this Form 4.

Key Figures

Shares granted: 108 shares Grant price: $194.698 per share Post-transaction holdings: 33,376 shares

3 metrics

Shares granted 108 shares Grant/award of common stock on April 20, 2026

Grant price $194.698 per share Value used for 108-share award

Post-transaction holdings 33,376 shares Direct common stock held after award

Key Terms

restricted share units, dividend reinvestment plan, deferred reporting on Form 5, grant, award, or other acquisition

4 terms

restricted share units financial

"Represents an award of restricted share units."

Restricted share units (RSUs) are a promise from a company to give an employee or service provider actual shares or cash equal to the shares after certain conditions are met, typically staying with the company for a set time or hitting performance targets. Think of them like a time-locked gift card that becomes usable only after you’ve earned it. For investors, RSUs matter because they align employee incentives with company performance and can increase the number of shares outstanding over time, diluting existing ownership and affecting earnings per share.

dividend reinvestment plan financial

"shares that were acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker"

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.

deferred reporting on Form 5 regulatory

"eligible for deferred reporting on Form 5. The reporting person has chosen to report such transaction early"

grant, award, or other acquisition regulatory

"transaction code description: Grant, award, or other acquisition"

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^*

SAMAD SAM

(Last) (First) (Middle)

500 PLAZA DRIVE

(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)
	Executive Vice President & CFO

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(1)	04/20/2026		A	V	108(2)	A	$194.698	33,376	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. Represents an award of restricted share units.

2. 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. The reporting person has chosen to report such transaction early on this Form 4.

Remarks:

	Sean D. Mersten, Attorney in Fact for Sam Samad	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 Quest Diagnostics (DGX) report for Sam Samad?

Quest Diagnostics Executive Vice President & CFO Sam Samad reported acquiring 108 shares of common stock. The transaction was coded as a grant or award and increased his direct holdings to 33,376 shares following the transaction on April 20, 2026.

How many Quest Diagnostics (DGX) shares does CFO Sam Samad hold after this Form 4?

After the reported transaction, CFO Sam Samad directly holds 33,376 Quest Diagnostics common shares. This total reflects the addition of 108 shares from a grant or award transaction reported on April 20, 2026, as shown in the Form 4 data.

What does the 108-share transaction for Quest Diagnostics (DGX) represent?

The 108-share transaction represents an award of restricted share units and shares acquired through a dividend reinvestment plan. Footnotes explain it as restricted share units and dividend reinvestment shares that the reporting person chose to disclose early on this Form 4.

Was the Quest Diagnostics (DGX) CFO’s 108-share acquisition an open-market purchase?

No, the 108-share acquisition was not an open-market purchase. It is coded as a grant, award, or other acquisition and is tied to restricted share units and a dividend reinvestment plan, rather than a discretionary open-market buy order.

Why does the Quest Diagnostics (DGX) Form 4 mention deferred reporting on Form 5?

The filing notes the shares were acquired under a dividend reinvestment plan and were eligible for deferred reporting on Form 5. However, the reporting person chose to report this transaction earlier on Form 4, providing more timely disclosure of these share additions.