MLM (NYSE: MLM) SVP reports tax-withholding share dispositions

Rhea-AI Filing Summary

Martin Marietta Materials senior vice president, controller and chief accounting officer Robert J. Cardin reported two tax-related share dispositions. On February 24, he disposed of 103 common shares at $696.85 per share to satisfy tax withholding obligations. On February 23, he similarly disposed of 209 shares at $683.60 per share for tax withholding. Following these transactions, he directly held 12,459 common shares.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Cardin Robert J

Role SVP, Controller & CAO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	103	$696.85	$72K
Tax Withholding	Common Stock	209	$683.60	$143K

Holdings After Transaction: Common Stock — 12,459 shares (Direct)

Footnotes (1)

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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^*

Cardin Robert J

(Last) (First) (Middle)

4123 PARKLAKE AVENUE

(Street)

RALEIGH NC 27612

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MARTIN MARIETTA MATERIALS INC [ MLM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Controller & CAO

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

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	02/23/2026		F		209	D	$683.6	12,562	D
Common Stock	02/24/2026		F		103	D	$696.85	12,459	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:

	/s/ Sara W. Brown, attorney-in-fact	02/25/2026
	** 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 MLM’s Robert J. Cardin report?

Robert J. Cardin reported two tax-withholding dispositions of Martin Marietta Materials common stock. He disposed of 103 shares at $696.85 and 209 shares at $683.60 to cover tax obligations, rather than executing open-market sales.

How many Martin Marietta (MLM) shares did Cardin dispose of for taxes?

Robert J. Cardin disposed of a total of 312 common shares for tax withholding. The Form 4 shows 103 shares at $696.85 and 209 shares at $683.60, all classified as tax-liability payments using company stock.

What is Robert J. Cardin’s remaining MLM share ownership after these transactions?

After the reported tax-withholding dispositions, Robert J. Cardin directly holds 12,459 shares of Martin Marietta Materials common stock. This figure reflects his position following the February 24 transaction recorded in the Form 4 filing as direct ownership.

Were Robert J. Cardin’s MLM transactions open-market sales?

No, the Form 4 classifies both transactions with code “F”, indicating tax-withholding dispositions. This means shares were used to pay tax liabilities or exercise costs, not discretionary open-market sales initiated to change his investment position.

On what dates did Robert J. Cardin’s MLM tax-withholding dispositions occur?

Robert J. Cardin’s tax-withholding dispositions occurred on February 23 and February 24. On these dates, he used Martin Marietta common shares, at specified prices, to satisfy tax obligations associated with his equity compensation awards.