[Form 3] Martin Marietta Materials Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Martin Marietta Materials (MLM) Form 3: Jason Paul Flynn, identified as Senior Vice President and Chief Information Officer, filed an initial Section 16 beneficial ownership report disclosing direct ownership of 4,522 shares of Martin Marietta common stock. The Form 3 lists the transaction date requiring the filing as 08/14/2025 and the filing signature executed by counsel on 08/25/2025. The report is a routine officer disclosure with no derivatives or other holdings reported.

Insights

Financial Analyst

TL;DR: Routine officer disclosure; small direct holding reported, no derivatives.

The Form 3 is a standard initial Section 16 filing showing a direct position of 4,522 shares by an executive officer. This disclosure provides transparency about insider ownership but does not indicate any material shift in control or sizeable economic exposure relative to a large-cap issuer. There are no derivative positions or indirect holdings disclosed to suggest hedging or complex compensation structures.

Corporate Governance Expert

TL;DR: Compliance filing confirming officer's beneficial ownership; governance impact is neutral.

The submission satisfies Section 16 reporting requirements by identifying the reporting person, role (SVP and CIO), and the direct share count. The filing was signed by an attorney-in-fact, indicating proper procedural handling. Because the position is modest and no related-party or 10% ownership is claimed, the filing has no evident governance implications beyond routine disclosure.

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

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1. Name and Address of Reporting Person^*

Flynn Jason Paul

(Last) (First) (Middle)

4123 PARKLAKE AVE

(Street)

RALEIGH NC 27612

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
08/14/2025

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

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

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

5. 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 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	4,522	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/ Bradley D. Kohn, attorney-in-fact	08/25/2025
	** 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 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.

FAQ

Who filed the Form 3 for MLM?

The reporting person is Jason Paul Flynn, listed with an address in Raleigh, NC, and the title SVP and CIO.

How many Martin Marietta (MLM) shares were disclosed on the Form 3?

The Form 3 discloses direct ownership of 4,522 shares of Martin Marietta common stock.

What date triggered the Form 3 filing for MLM?

The date of the event requiring the statement is listed as 08/14/2025.

Were any derivative or indirect holdings reported on the Form 3 for MLM?

No. The filing shows only non-derivative common stock holdings and does not report any derivative or indirect ownership.

When was the Form 3 signed and by whom?

The signature block shows the form signed by Bradley D. Kohn, attorney-in-fact on 08/25/2025.