Martin Marietta (NYSE: MLM) director Martin J. Lyons files Form 3 showing no common stock holdings

Rhea-AI Filing Summary

Martin Marietta Materials director Martin J. Lyons has filed an initial Form 3 reporting his beneficial ownership in the company. The filing lists Common Stock holdings of 0 shares following the reported entry dated May 14, 2026, indicating he currently reports no direct common stock ownership.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider LYONS MARTIN J

Role null

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 0 shares (Direct, null)

Footnotes (1)

Key Figures

Common Stock held: 0.0000 shares

1 metrics

Common Stock held 0.0000 shares Total shares following entry dated May 14, 2026

Key Terms

Form 3, Common Stock, beneficial ownership

3 terms

Form 3 regulatory

"Martin J. Lyons has filed an initial Form 3 reporting his beneficial ownership"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

Common Stock financial

"The filing lists Common Stock holdings of 0 shares following the reported entry"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

beneficial ownership financial

"Form 3 reporting his beneficial ownership in the company"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

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. Date of Event Requiring Statement (Month/Day/Year)
05/14/2026

3. Issuer Name and Ticker or Trading Symbol
MARTIN MARIETTA MATERIALS INC [ MLM ]

3a. Foreign Trading Symbol

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

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	0	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Sara W. Brown, attorney-in-fact	05/18/2026
	** 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 5 (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 3: SEC 1473 (03-26)

FAQ

What does Martin J. Lyons’ Form 3 filing for MLM show?

The Form 3 for Martin Marietta Materials director Martin J. Lyons shows he reports 0 shares of Common Stock beneficially owned. This is an initial ownership statement and does not reflect any purchase or sale transaction.

Did Martin J. Lyons buy or sell Martin Marietta Materials (MLM) stock in this Form 3?

No, the Form 3 does not show any buy or sell transaction. It is an initial ownership report listing 0 shares of Common Stock held following the reported entry on May 14, 2026.

How many Martin Marietta Materials (MLM) shares does Martin J. Lyons hold after this filing?

The filing states that Martin J. Lyons holds 0.0000 shares of Common Stock following the reported entry. This means he currently reports no direct beneficial ownership of Martin Marietta Materials common shares in this Form 3.

What role does Martin J. Lyons have at Martin Marietta Materials (MLM)?

The Form 3 identifies Martin J. Lyons as a director of Martin Marietta Materials. As a director, he is required to file ownership reports like Form 3 to disclose his beneficial holdings in the company’s securities.

Does this Form 3 for MLM include any derivative or option positions for Martin J. Lyons?

No, the provided data show no derivative positions for Martin J. Lyons. The derivativeSummary is empty, and the filing lists only Common Stock with a total of 0 shares following the reported entry.