Martin Marietta Materials (MLM) director reports 75-share acquisition and updated holdings

Rhea-AI Filing Summary

Martin Marietta Materials director reports acquisition of stock units under board plan. A company director acquired 75 common stock units of Martin Marietta Materials, Inc. on 11/28/2025 at a price of $623.24 per share. Following this transaction, the director beneficially owns 8,753 shares directly, plus 2,000 shares held through SJK Holdings and Investments, LLC and 4,900 shares held through the JJ Koraleski and SF Koraleski Co-Trustee Koraleski Living Trust.

The 75 common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors and will be settled in stock in a lump sum or installments over up to 10 years after the individual ceases to be a Non-Employee Director or on a later date elected under the plan.

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
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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^*

KORALESKI JOHN 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)

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

3. Date of Earliest Transaction (Month/Day/Year)
11/28/2025

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	11/28/2025		A		75(1)	A	$623.24	8,753	D
Common Stock								2,000	I	SJK HOLDINGS and INVESTMENTS, LLC
Common Stock								4,900	I	JJ KORALESKI and SF KORALESKI CO-TTEE KORALESKI LIVING TRUST U/A DTD 01/18/1991

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. Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors (the "Plan") and are to be settled in stock in a lump sum or in installments not to exceed 10 years commencing on (i) the date the reporting person ceases to be a Non-Employee Director, (ii) the date that is one month and one year following the date the reporting person ceases to be a Non-Employee Director, or (iii) the date elected by the Non-Employee Director that is later than the third anniversary of the date the fees are earned, in accordance with the reporting person's election under the Plan.

	/s/ Bradley D. Kohn, attorney-in-fact	12/01/2025
	** 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.

FAQ

What insider transaction did Martin Marietta Materials (MLM) report on this Form 4?

A director of Martin Marietta Materials, Inc. reported acquiring 75 common stock units on 11/28/2025 at $623.24 per share under the company’s Common Stock Purchase Plan for Directors.

How many Martin Marietta Materials (MLM) shares does the director own after this transaction?

After the reported transaction, the director beneficially owns 8,753 shares directly, plus 2,000 shares indirectly through SJK Holdings and Investments, LLC and 4,900 shares indirectly through the Koraleski Living Trust.

What is the Martin Marietta Materials Common Stock Purchase Plan for Directors?

The Common Stock Purchase Plan for Directors allows Martin Marietta Materials Non-Employee Directors to accrue common stock units, which are later settled in stock, either in a lump sum or installments, in accordance with each director’s election under the plan.

When will the acquired common stock units for the Martin Marietta Materials director be settled?

The 75 common stock units will be settled in stock in a lump sum or installments over a period not exceeding 10 years, starting on the date the director ceases to be a Non-Employee Director or on a later date elected under the plan.

Is this Martin Marietta Materials (MLM) Form 4 filed by one or multiple reporting persons?

The Form 4 is indicated as being filed by one reporting person, who is a director of Martin Marietta Materials, Inc.

What type of ownership is reported for the director’s Martin Marietta Materials shares?

The director reports direct ownership of 8,753 shares of common stock and indirect ownership of 2,000 shares through SJK Holdings and Investments, LLC and 4,900 shares through the Koraleski Living Trust.