Martin Marietta (NYSE: MLM) CEO reports 298-share stock disposition

Rhea-AI Filing Summary

Martin Marietta Materials’ top executive reported a small sale of company stock. On December 16, 2025, a transaction coded “F” shows 298 shares of common stock were disposed of at $629.49 per share. After this transaction, the reporting person, who is a Director and also Chairman, President and CEO, directly beneficially owns 151,876 common shares and indirectly beneficially owns 70,400 common shares through the Charles Howard Nye Irrevocable Trust.

Insider Trade Summary

Net Seller: 298 shares

Net Sell 2 txns

Insider Nye C Howard

Role Chairman, Pres & CEO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	298	$629.49	$188K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 151,876 shares (Direct); Common Stock — 70,400 shares (Indirect, By Charles Howard Nye Irrevocable Trust)

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 12/17/2025 - 04:35 PM Learn about SEC filing dates

FAQ

What insider stock transaction did Martin Marietta Materials (MLM) report?

The report shows a transaction on December 16, 2025 coded “F,” in which 298 shares of Martin Marietta Materials common stock were disposed of at a price of $629.49 per share.

How many Martin Marietta Materials (MLM) shares does the reporting person now directly own?

Following the reported transaction, the reporting person directly beneficially owns 151,876 shares of Martin Marietta Materials common stock.

What indirect ownership in Martin Marietta Materials (MLM) stock is reported?

The filing shows indirect beneficial ownership of 70,400 common shares, held through the Charles Howard Nye Irrevocable Trust.

When did the reported Martin Marietta Materials (MLM) insider transaction occur?

The reported transaction took place on December 16, 2025.

What is the reporting person’s role at Martin Marietta Materials (MLM)?

The reporting person is a Director and an Officer, serving as Chairman, President and CEO of Martin Marietta Materials, Inc.

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^*

Nye C Howard

(Last) (First) (Middle)

MARTIN MARIETTA MATERIALS, INC.

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
X	Officer (give title below)		Other (specify below)
	Chairman, Pres & CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/16/2025

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	12/16/2025		F		298	D	$629.49	151,876	D
Common Stock								70,400	I	By Charles Howard Nye Irrevocable Trust

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/ Bradley D. Kohn, attorney-in-fact	12/17/2025
	** 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.