Martin Marietta director granted 68 stock units

MARTIN MARIETTA MATERIALS INC (MLM) director Martin J. Lyons reported an acquisition of 68 common stock units on August 31, 2026, as a grant or award under the company’s Common Stock Purchase Plan for Directors.

Rhea-AI Filing Summary

MARTIN MARIETTA MATERIALS INC (MLM) director Martin J. Lyons reported an acquisition of 68 common stock units on August 31, 2026, as a grant or award under the company’s Common Stock Purchase Plan for Directors. Following this award, he holds a total of 442 shares/units in direct ownership.

The common stock units were accrued under the director stock purchase plan and will be settled in company stock, either in a lump sum or in installments, at future dates tied to when he ceases to be a Non-Employee Director and his elections under the plan. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Grant/Award: 68 shares

Grant/Award 1 txn

Insider LYONS MARTIN J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	68	$518.70	$35K

Holdings After Transaction: Common Stock — 442 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares or units acquired: 68 shares/units Price per share reference: $518.70 per share Holdings after transaction: 442 shares/units +1 more

4 metrics

Shares or units acquired 68 shares/units Grant or award acquisition on August 31, 2026 under the director plan

Price per share reference $518.70 per share Reference value used for the 68-unit award on August 31, 2026

Holdings after transaction 442 shares/units Direct ownership position reported after the August 31, 2026 award

Maximum installment period 10 years Installment settlement period for common stock units under the director plan

Key Terms

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

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"

Non-Employee Director regulatory

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

common stock units financial

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

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.

lump sum financial

"are to be settled in stock in a lump sum or in installments"

A lump sum is a single, one-time payment of the full amount owed instead of spreading the same money over multiple smaller payments. For investors, receiving or paying a lump sum affects cash flow, reinvestment opportunities and tax timing—like getting a full paycheck at once rather than regular paychecks—so it changes liquidity, risk exposure and the timing of returns.

FAQ

What insider transaction did MLM director Martin J. Lyons report?

Martin J. Lyons reported the acquisition of 68 common stock units on August 31, 2026, as a grant or award under Martin Marietta Materials’ Common Stock Purchase Plan for Directors, increasing his directly held position to 442 shares/units.

Was the MLM Form 4 transaction a market purchase or a grant?

The Form 4 transaction was a grant or award acquisition of 68 common stock units under Martin Marietta Materials’ Common Stock Purchase Plan for Directors, not an open-market purchase or sale.

How many MLM shares or units does Martin J. Lyons hold after this transaction?

After the August 31, 2026 award of 68 common stock units, Martin J. Lyons holds 442 shares/units of Martin Marietta Materials common stock in direct ownership, as reported in the filing.

At what reference price were the 68 MLM common stock units recorded?

The 68 common stock units were recorded at a reference value of $518.70 per share in the Form 4, consistent with a grant or award acquisition under the director stock purchase plan.

When will the awarded MLM common stock units be settled into shares?

The awarded common stock units will be settled in stock in a lump sum or installments, beginning when Martin J. Lyons ceases to be a Non-Employee Director or on a later date he previously elected, with installments not exceeding 10 years, under the plan’s terms.

Was the MLM insider transaction made under a Rule 10b5-1 trading plan?

No. The filing indicates no Rule 10b5-1 plan is affirmed for this transaction, and the footnotes describe only the operation of the director stock purchase plan, not a pre-arranged trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/02/2026 - 04:29 PM Accepted by SEC EDGAR 09/02/2026 - 04:29 PM Learn about SEC filing dates

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)
08/31/2026

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	08/31/2026		A		68(1)	A	$518.7	442	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	09/02/2026
	** 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)