Martin Marietta (NYSE: MLM) director granted 61 deferred stock units

Rhea-AI Filing Summary

LYONS MARTIN J reported acquisition or exercise transactions in this Form 4 filing.

Martin Marietta Materials director Martin J. Lyons received an award of 61 common stock units on May 29, 2026. The units were accrued under the company’s Common Stock Purchase Plan for Directors and are to be settled in company stock in the future.

Settlement will occur in a lump sum or installments over up to 10 years, beginning after he ceases to be a non-employee director or on a later date he previously elected under the plan. Following this grant, he directly holds 374 shares of common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider LYONS MARTIN J

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	61	$581.64	$35K

Holdings After Transaction: Common Stock — 374 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares granted: 61 shares Grant price: $581.64 per share Shares after transaction: 374 shares +1 more

4 metrics

Shares granted 61 shares Common stock units granted on May 29, 2026

Grant price $581.64 per share Reference transaction price for the 61 units

Shares after transaction 374 shares Total common stock directly held after grant

Settlement period Up to 10 years Installment settlement period for stock units

Key Terms

Common Stock Purchase Plan for Directors, common stock units, Non-Employee Director, lump sum or in installments

4 terms

Common Stock Purchase Plan for Directors financial

"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors"

common stock units financial

"Common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors"

A common stock unit is a tradable ownership interest that represents one or more ordinary shares in a company, giving the holder a stake in profits, a claim on assets after creditors, and usually voting rights on corporate matters. For investors it matters because these units determine how much of the company you own, how much influence you have, and how returns or losses are shared—think of owning slices of a pie that can be increased or diluted by the company’s actions.

Non-Employee Director financial

"commencing on (i) the date the reporting person ceases to be a Non-Employee Director"

lump sum or in installments financial

"are to be settled in stock in a lump sum or in installments not to exceed 10 years"

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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^*

LYONS MARTIN J

(Last) (First) (Middle)

4123 PARKLAKE AVENUE

(Street)

RALEIGH NORTH CAROLINA 27612

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	05/29/2026		A		61(1)	A	$581.64	374	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/ Sara W. Brown, attorney-in-fact	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Martin J. Lyons report for MLM on this Form 4?

Martin J. Lyons reported receiving 61 common stock units of Martin Marietta Materials as a grant under the company’s Common Stock Purchase Plan for Directors, increasing his directly held common stock position to 374 shares after the transaction.

Was the Martin J. Lyons MLM Form 4 transaction a market purchase or sale?

The transaction was not a market purchase or sale. It was a grant or award acquisition of 61 common stock units under a director stock purchase plan, classified with transaction code A and described as a grant, award, or other acquisition.

At what reference price were the 61 Martin Marietta shares granted to Martin J. Lyons?

The 61 common stock units for Martin J. Lyons were recorded at a transaction price of $581.64 per share. This reflects the value used for the award on the transaction date, not an open-market trade price from a buy or sell order.

How many Martin Marietta shares does Martin J. Lyons hold after this Form 4 grant?

After the grant, Martin J. Lyons directly holds 374 shares of Martin Marietta Materials common stock. This total includes the impact of the 61 common stock units reported in the filing and reflects his direct ownership position following the reported transaction.

When will the 61 common stock units granted to Martin J. Lyons be settled into MLM stock?

The common stock units will be settled in stock in a lump sum or installments over up to 10 years, starting after he ceases to be a non-employee director or on a later date he elected under the Martin Marietta director stock purchase plan.

What plan governed Martin J. Lyons’s 61-share award in Martin Marietta Materials?

The 61 common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors. This plan allows non-employee directors to receive fees in stock units that are later settled in company shares according to the director’s prior elections.