[Form 4] Martin Marietta Materials Insider Trading Activity

Rhea-AI Filing Summary

Pike Thomas, a director of Martin Marietta Materials, Inc. (MLM), reported a transaction dated 08/29/2025 in which 51 common stock units were acquired under the company’s Common Stock Purchase Plan for Directors. The filing shows a price of $616.4 and reports 4,493 shares beneficially owned following the transaction, held directly. The director units are accrued under the director stock purchase plan and will be settled in shares either in a lump sum or in installments (up to 10 years) following the director’s cessation of service or per the director’s election, as described in the filing. The Form 4 was signed by an attorney-in-fact on 09/02/2025.

Positive

• Director participation in the company equity plan, indicating alignment of board interests with shareholders
• Clear disclosure of the accrual and settlement mechanics under the Common Stock Purchase Plan for Directors

Negative

• None.

Insights

Financial Analyst

TL;DR Routine director stock accruals increased direct holdings by 51 units; not material to company valuation.

The reported acquisition of 51 common stock units for a stated price of $616.4 increases the reporting director’s direct holdings to 4,493 shares. This appears to be a compensation-related accrual under the board’s director purchase plan rather than an open-market strategic purchase. Such transactions are common for non-employee directors and typically reflect standard equity-based compensation or deferred fee conversion. The magnitude (51 units) is small relative to typical public-company floats, so this filing is unlikely to move market perceptions or materially affect issuer capitalization.

Corporate Governance Expert

TL;DR Disclosure documents a standard director compensation settlement; governance controls appear followed.

The Form 4 discloses accruals under the Martin Marietta Common Stock Purchase Plan for Directors with settlement mechanics and timing specified. The filing identifies the reporting person as a director and records direct ownership after the transaction. The use of an attorney-in-fact signature is disclosed. The description aligns with routine governance practice for deferred director compensation and provides the necessary information for Section 16 transparency.

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^*

Pike Thomas

(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)
08/29/2025

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	08/29/2025		A		51(1)	A	$616.4	4,493	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. 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	09/02/2025
	** 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 did Pike Thomas report on Form 4 for MLM?

The report shows that Pike Thomas acquired 51 common stock units on 08/29/2025 under the director purchase plan and now beneficially owns 4,493 shares directly.

How were the acquired units to be settled according to the filing?

The units are accrued under the Common Stock Purchase Plan for Directors and will be settled in stock either in a lump sum or in installments (up to 10 years) following cessation of service or per the director’s election.

What price is shown for the reported transaction?

The filing lists a price of $616.4 associated with the reported acquisition.

When was the Form 4 signed and by whom?

The Form 4 shows a signature by Bradley D. Kohn, attorney-in-fact dated 09/02/2025.

Does the filing indicate the ownership is direct or indirect?

The filing indicates the reported post-transaction ownership is direct (D).