# EDGAR Filing Document

**Accession Number:** 0000916076
**File Stem:** 0000916076-26-000055
**Filing Date:** 2026-5
**Character Count:** 7840
**Document Hash:** 6b22d4d10ed6332e326dd072651ac00a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000916076-26-000055.hdr.sgml**: 20260518

**ACCESSION NUMBER**: 0000916076-26-000055

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260514

**FILED AS OF DATE**: 20260518

**DATE AS OF CHANGE**: 20260518

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** LYONS MARTIN J
- **CENTRAL INDEX KEY:** 0001190099

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12744
- **FILM NUMBER:** 26994999

**MAIL ADDRESS:**
- **STREET 1:** 1901 CHOUTEAU AVENUE MC-1310
- **CITY:** ST. LOUIS
- **STATE:** MO
- **ZIP:** 63103
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MARTIN MARIETTA MATERIALS INC
- **CENTRAL INDEX KEY:** 0000916076
- **STANDARD INDUSTRIAL CLASSIFICATION:** MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 561848578
- **STATE OF INCORPORATION:** NC
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 4123 PARKLAKE AVE
- **CITY:** RALEIGH
- **STATE:** NC
- **ZIP:** 27612
- **BUSINESS PHONE:** 919-781-4550

**MAIL ADDRESS:**
- **STREET 1:** 4123 PARKLAKE AVE
- **CITY:** RALEIGH
- **STATE:** NC
- **ZIP:** 27612

## Ex-24

```

MARTIN J. LYONS, JR.
LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS

     Know all by these presents, that the undersigned hereby
makes, constitutes and appoints George F. Schoen and Sara W. Brown
as the undersigned's true and lawful attorneys-in-fact, with full
power and authority as hereinafter described on behalf of and
in the name, place and stead of the undersigned to:

     (1)  prepare, execute, acknowledge, deliver and file
Forms 3, 4, and 5 (including any amendments thereto and
including any Forms 144) with respect to the securities of
Martin Marietta Materials, Inc. a North Carolina corporation
(the "Company"), with the United States Securities and
Exchange Commission, any national securities exchanges and the
Company, as considered necessary or advisable under
Section 16(a) of the Securities Exchange Act of 1934 and the
rules and regulations promulgated thereunder, as amended from
time to time (the "Exchange Act");

     (2)  seek or obtain, as the undersigned's representative
and on the undersigned's behalf, information on transactions
in the Company's securities from any third party, including
brokers, employee benefit plan administrators and trustees,
and the undersigned hereby authorizes any such person to
release any such information to the undersigned and approves
and ratifies any such release of information; and

     (3)  perform any and all other acts which in the
discretion of such attorneys-in-fact are necessary or desirable
for and on behalf of the undersigned in connection with the
foregoing.

The undersigned acknowledges that:

     (1)  this Power of Attorney authorizes, but does not
require, such attorneys-in-fact to act in their discretion
on information provided to such attorneys-in-fact without
independent verification of such information;

     (2)  any documents prepared and/or executed by
such attorneys-in-fact on behalf of the undersigned pursuant to
this Power of Attorney will be in such form and will contain
such information and disclosure as such attorneys-in-fact, in
their discretion, deems necessary or desirable;

     (3)  neither the Company nor such attorneys-in-
fact assumes (i) any liability for the undersigned's
responsibility to comply with the requirement of the Exchange
Act, (ii) any liability of the undersigned for any failure to
comply with such requirements, or (iii) any obligation or
liability of the undersigned for profit disgorgement under
Section 16(b) of the Exchange Act; and

     (4)  this Power of Attorney does not relieve the
undersigned from responsibility for compliance with the
undersigned's obligations under the Exchange Act, including
without limitation the reporting requirements under Section 16
of the Exchange Act.

     The  undersigned hereby gives and grants the
foregoing attorneys-in-fact full power and authority to do and
perform all and every act and thing whatsoever requisite,
necessary or appropriate to be done in and about the foregoing
matters as fully to all intents and purposes as the
undersigned might or could do if present, hereby ratifying all
that each such attorneys-in-fact of, for and on behalf of the
undersigned, shall lawfully do or cause to be done by virtue
of this Limited Power of Attorney.

     This Power of Attorney shall remain in full force and
effect until revoked by the undersigned in a signed writing
delivered to such attorney-in-fact.

     IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of this 18th day of May, 2026.

                         _/s/_Martin_J._Lyons,_Jr._____
                         Martin J. Lyons, Jr.

```

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>LYONS MARTIN J<br><sub>(Last) (First) (Middle)</sub><br>4123 PARKLAKE AVENUE<br><sub>(Street)</sub><br>RALEIGH, NC 27612<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>MARTIN MARIETTA MATERIALS INC [ MLM ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-05-14 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Stock | 0 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

**Remarks:**
Exhibit 24.1 - Power of Attorney

**Signature:** /s/ Sara W. Brown, attorney-in-fact  
**Date:** 2026-05-18

### Remarks:

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.**