Martin Marietta (NYSE: MLM) director granted new stock units

Rhea-AI Filing Summary

Martin Marietta Materials director John J. Koraleski reported an automatic equity award. On February 27, 2026, he acquired 69 shares of Common Stock as a grant or award acquisition at a reported price of $676.57 per share under the company’s Common Stock Purchase Plan for Directors.

Following this grant, his directly held Common Stock balance increased to 8,822 shares. The filing also shows indirect ownership of 2,000 shares through SJK HOLDINGS and INVESTMENTS, LLC and 4,900 shares held via the KORALESKI LIVING TRUST, reflecting additional positions associated with the director.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider KORALESKI JOHN J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	69	$676.57	$47K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,822 shares (Direct); Common Stock — 2,000 shares (Indirect, SJK HOLDINGS and INVESTMENTS, LLC)

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^*

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)
02/27/2026

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	02/27/2026		A		69(1)	A	$676.57	8,822	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/ Sara W. Brown, attorney-in-fact	03/02/2026
	** 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 did Martin Marietta (MLM) director John J. Koraleski report in this Form 4?

He reported receiving an automatic equity award of 69 Martin Marietta Common Stock shares. The award was classified as a grant or other acquisition under the director stock purchase plan, increasing his directly held position disclosed in the filing.

How many Martin Marietta (MLM) shares did John J. Koraleski acquire?

He acquired 69 shares of Martin Marietta Common Stock. The transaction was reported as a grant or award, not an open-market purchase, and carries a reported price of $676.57 per share under the director stock purchase plan.

What are John J. Koraleski’s direct share holdings in Martin Marietta (MLM) after this award?

After the award, his directly held Common Stock position is 8,822 shares. This figure reflects his direct ownership only and does not include additional indirect holdings reported through related entities and a family trust.

What indirect Martin Marietta (MLM) holdings are associated with John J. Koraleski?

The filing shows 2,000 shares held indirectly through SJK HOLDINGS and INVESTMENTS, LLC and 4,900 shares held through the KORALESKI LIVING TRUST. These positions are reported as indirect ownership interests connected to the director.

Was John J. Koraleski’s Martin Marietta (MLM) transaction a market purchase or a plan award?

It was a plan-related award, not a market purchase. The Form 4 labels the transaction as a grant, award, or other acquisition, tied to the Martin Marietta Common Stock Purchase Plan for Directors described in the accompanying footnote.

How does the director stock plan affect settlement of John J. Koraleski’s Martin Marietta (MLM) units?

The plan states common stock units will be settled in stock in a lump sum or installments. Settlement begins after he ceases to be a non-employee director, with timing options defined by the plan and his prior election.