Quest Diagnostics (DGX) director granted 1,142 restricted stock units in Form 4 filing

Rhea-AI Filing Summary

Quest Diagnostics director Robert B. Carter received an equity award in the form of restricted stock units. On May 20, 2026, he acquired 1,142 shares of Common Stock at a stated price of $0.00 per share, reflecting a grant or award rather than an open-market purchase.

After this award, Carter directly holds 3,853 shares of Quest Diagnostics common stock in total. The filing does not show any sales or derivative exercises, indicating this was a routine compensation-related equity grant to a board member rather than a trading decision in the market.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider CARTER ROBERT B

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,142	$0.00	--

Holdings After Transaction: Common Stock — 3,853 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares granted: 1,142 shares Grant price: $0.00 per share Total shares after grant: 3,853 shares +1 more

4 metrics

Shares granted 1,142 shares Restricted stock unit award on May 20, 2026

Grant price $0.00 per share Compensation-related equity award, not market purchase

Total shares after grant 3,853 shares Direct holdings following the reported transaction

Transaction code A (grant, award, or other acquisition) Non-derivative common stock transaction

Key Terms

restricted stock units, grant, award, or other acquisition, Common Stock

3 terms

restricted stock units financial

"Represents an award of restricted stock units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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^*

CARTER ROBERT B

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

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)	05/20/2026		A		1,142	A	$0	3,853	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 stock units.

Remarks:

	Sean D. Mersten, Attorney-in-Fact for Robert B. Carter	05/21/2026
	** 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) disclose for Robert B. Carter?

Quest Diagnostics reported that director Robert B. Carter received an equity award of 1,142 shares of common stock. The transaction was coded as a grant or award acquisition, not an open-market trade, and increased his directly held position to 3,853 shares.

Was the Quest Diagnostics (DGX) Form 4 transaction a stock purchase or a grant?

The Form 4 shows a grant, not a market purchase. Carter acquired 1,142 common shares at a stated price of $0.00 per share, described as an award of restricted stock units, which is typical for director compensation rather than a discretionary stock buy.

How many Quest Diagnostics (DGX) shares does Robert B. Carter hold after this Form 4?

Following the reported transaction, Robert B. Carter holds 3,853 Quest Diagnostics common shares directly. This total reflects the addition of 1,142 shares from the restricted stock unit award reported on May 20, 2026, with no sales or dispositions disclosed in this filing.

What does the zero price on the Quest Diagnostics (DGX) Form 4 transaction mean?

The $0.00 per-share price indicates the shares were granted as compensation, not bought on the market. Carter’s 1,142-share acquisition represents an award of restricted stock units, so he did not pay cash for the shares reported in this Form 4.

Does the Quest Diagnostics (DGX) Form 4 show any stock sales by Robert B. Carter?

No stock sales are reported in this Form 4. The filing shows only one transaction: an acquisition of 1,142 common shares via a grant of restricted stock units, with no dispositions, tax withholdings, or derivative exercises on the reported date.