MARTIN MARIETTA MATERIALS INC

Mining & Quarrying of Nonmetallic Minerals (No Fuels)

MLM Mining & Metals People in Mining & Metals SEC CIK 0000916076 ↗

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Market capitalisation
$36.22B
60,065,839 shares Covers every share class this company has on file.
Insiders on file
19
people who have filed Form 3, 4 or 5 naming this issuer
Value of insider-held stock
$260.61M
from the holdings reported on Forms 3/4/5; this figure has no separate as-of date on file
Insider-held share of market cap
0.72%
insider-held value divided by market capitalisation

What MARTIN MARIETTA MATERIALS INC reports

Revenue and net income below are for fiscal period FY2025, the period label carried by this company’s own annual XBRL filings to the SEC. Fiscal years do not line up between companies — one company’s FY2026 can cover much the same months as another’s FY2025 — so compare the periods, not just the numbers.

Revenue
$6.15B
FY2025 annual revenue, from this company’s own annual XBRL filings to the SEC
Net income
$1.14B
FY2025 profit for the period, from this company’s own annual XBRL filings to the SEC
Employees
9,600
Yahoo Finance
Where the employee count comes from

Headcount comes from Yahoo Finance, not from a filing. The date beside it is the day we retrieved the figure — it is not the date the company counted its staff, and Yahoo does not publish that date. Unlike the SEC filings behind the other figures on this page, this one carries no open licence, so we publish the number and nothing else from that source.

Insiders at MARTIN MARIETTA MATERIALS INC

Shares is what each person last reported holding here.

Everyone below has filed at least one insider report against this company.

Value is that share count priced at the same closing price used everywhere else on this site. A row priced from only some of a person’s securities says so — we do not quietly present a partial sum as a complete one.

Rows are grouped by the role each person reports.

The role comes from the relationship boxes a person ticks on their own insider filings — officer, director, ten per cent owner — not from anything we infer. Somebody who is both an officer and a director appears once, in the combined group, so the row count still matches the figure at the top of this page. Where no filing states a role we say so instead of guessing one.

People who file insider reports against MARTIN MARIETTA MATERIALS INC.
Insider Reported role Shares Value Last action
Officers 9
Roselyn R. Bar EVP 62,594 $32.22M F Shares withheld for taxes Dec 16, 2025 position reported
James AJ Nickolas CFO 26,643 $13.72M F Shares withheld for taxes Feb 24, 2025 position reported
George Frederick Schoen General Counsel 23,673 $12.19M A Grant or award Mar 1, 2026 position reported
Michael J Petro CFO 15,359 $7.91M A Grant or award Sep 1, 2026 position reported
Robert J Cardin Chief Accounting Officer 12,459 $6.41M F Shares withheld for taxes Feb 24, 2026 position reported
Donald A McCunniff EVP 7,518 $3.87M A Grant or award Mar 1, 2026 position reported
Jason Paul Flynn CIO 5,494 $2.83M F Shares withheld for taxes Feb 24, 2026 position reported
Oliver W Brooks SVP 5,178 $2.67M F Shares withheld for taxes Feb 24, 2025 position reported
Bradley D. Kohn General Counsel 3,625 $1.87M A Grant or award Feb 21, 2025 position reported
Officers who also sit on the board 2
C Howard Nye CEO 246,438 $126.86M A Grant or award Mar 1, 2026 position reported
Thomas Pike CEO 4,591 $2.36M A Grant or award Aug 31, 2026 position reported
Directors 8
Sue W. Cole Board Member 24,644 $12.69M A Grant or award May 15, 2025 position reported
Michael J Quillen Board Member 21,306 $10.97M G Bona fide gift May 9, 2024 position reported
John J. Koraleski Board Member 15,722 $8.09M A Grant or award Feb 27, 2026 position reported
Laree E. Perez Board Member 15,417 $7.94M A Grant or award May 14, 2026 position reported
Donald W. Slager Board Member 4,751 $2.45M A Grant or award May 14, 2026 position reported
David C. Wajsgras Board Member 4,646 $2.39M A Grant or award Aug 31, 2026 position reported
Dorothy M Ables Board Member 3,908 $2.01M A Grant or award May 14, 2026 position reported
Anthony R Foxx Board Member 2,302 $1.19M A Grant or award May 14, 2026 position reported

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

MARTIN MARIETTA MATERIALS INC (MLM) filed a Form 8-K under Item 5.02 (directors and officers) on Aug 24, 2026

Director or officer change filing

The company filed a current report that includes Item 5.02, the item used to report departures, elections or appointments of directors and certain officers, and related pay arrangements. We record only that this filing exists: we have not extracted who left, who joined or whose role changed. Open the filing to read it.

Form 8-K filed Aug 24, 2026, items 1.01, 2.01, 3.02, 5.02, 7.01, 9.01. SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

MARTIN MARIETTA MATERIALS INC (MLM) filed a Form 8-K under Item 5.02 (directors and officers) on Aug 4, 2026

Director or officer change filing

The company filed a current report that includes Item 5.02, the item used to report departures, elections or appointments of directors and certain officers, and related pay arrangements. We record only that this filing exists: we have not extracted who left, who joined or whose role changed. Open the filing to read it.

Form 8-K filed Aug 4, 2026, item 5.02. SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Recent insider transactions

Of the 132 rows we hold, 1 are open-market purchases (P) and 2 open-market sales (S) — the only codes we count as buying or selling.

The rest — awards, shares withheld to pay tax, option exercises, gifts and so on — follow from an employment contract or a transfer arranged off-market, not from a decision to buy or sell, so counting them would turn this into a pay table.

A price of 0.00 is a real reported figure on gifts (G) and share awards (A) — not a gap in our data.

Insider transactions disclosed to the SEC for MARTIN MARIETTA MATERIALS INC, newest first, each with the filing behind it.
Date Insider Transaction Shares Price Value Filing
Feb 24, 2026 Robert J Cardin F Shares withheld for taxes 103 $696.85 $71.8K SEC filing ↗
Feb 24, 2026 C Howard Nye F Shares withheld for taxes 1,221 $696.85 $850.9K SEC filing ↗
Feb 23, 2026 Jason Paul Flynn F Shares withheld for taxes 177 $683.60 $121.0K SEC filing ↗
Feb 23, 2026 Michael J Petro F Shares withheld for taxes 211 $683.60 $144.2K SEC filing ↗
Feb 23, 2026 Robert J Cardin F Shares withheld for taxes 209 $683.60 $142.9K SEC filing ↗
Feb 23, 2026 C Howard Nye F Shares withheld for taxes 1,805 $683.60 $1.23M SEC filing ↗
Feb 23, 2026 Donald A McCunniff F Shares withheld for taxes 192 $683.60 $131.3K SEC filing ↗
Feb 20, 2026 Jason Paul Flynn A Grant or award 592 $548.75 $324.9K SEC filing ↗
Feb 20, 2026 Jason Paul Flynn A Grant or award 595 $0.00 $0 SEC filing ↗
Feb 20, 2026 Michael J Petro A Grant or award 931 $0.00 $0 SEC filing ↗
Feb 20, 2026 Robert J Cardin A Grant or award 658 $0.00 $0 SEC filing ↗
Feb 20, 2026 C Howard Nye A Grant or award 2,216 $548.75 $1.22M SEC filing ↗
Feb 20, 2026 C Howard Nye A Grant or award 6,405 $0.00 $0 SEC filing ↗
Feb 20, 2026 Donald A McCunniff A Grant or award 1,277 $0.00 $0 SEC filing ↗
Feb 17, 2026 Jason Paul Flynn F Shares withheld for taxes 107 $666.53 $71.3K SEC filing ↗
Feb 17, 2026 Jason Paul Flynn A Grant or award 222 $0.00 $0 SEC filing ↗
Feb 17, 2026 Michael J Petro A Grant or award 1,724 $0.00 $0 SEC filing ↗
Feb 17, 2026 Michael J Petro F Shares withheld for taxes 758 $666.53 $505.2K SEC filing ↗
Feb 17, 2026 Robert J Cardin F Shares withheld for taxes 822 $666.53 $547.9K SEC filing ↗
Feb 17, 2026 Robert J Cardin A Grant or award 1,869 $0.00 $0 SEC filing ↗
Feb 17, 2026 C Howard Nye F Shares withheld for taxes 9,717 $666.53 $6.48M SEC filing ↗
Feb 17, 2026 C Howard Nye A Grant or award 22,365 $0.00 $0 SEC filing ↗
Dec 16, 2025 Robert J Cardin F Shares withheld for taxes 32 $629.49 $20.1K SEC filing ↗
Dec 16, 2025 C Howard Nye F Shares withheld for taxes 298 $629.49 $187.6K SEC filing ↗
Dec 16, 2025 Donald A McCunniff F Shares withheld for taxes 50 $629.49 $31.5K SEC filing ↗

From SEC Form 4 filings. Every row links to the filing it came from. How we calculate this.

What a Form 4 is

The report an officer, director or large shareholder must file after trading their own company’s stock.

Subsidiaries — 96 legal entities

Subsidiaries of MARTIN MARIETTA MATERIALS INC

96 legal entities named in the subsidiary exhibit filed with this company’s most recent 10-K. . Filing on SEC.gov.

This is not the full list. SEC rules only require a company to name its significant subsidiaries.

What that leaves out

Smaller entities are left out of the exhibit entirely. A short list here means a short exhibit — it does not mean the company owns nothing else. Nothing on this page is inferred: every name below is copied from the filing.

Subsidiaries MARTIN MARIETTA MATERIALS INC names in its most recent annual report, with the place each one is organised.
Subsidiary Organised in
1560947 B.C. LTD., a British Columbia, Canada corporation —
2M Lands, LLC North Carolina
Alamo Gulf Coast Railroad Company Texas
Alamo North Texas Railroad Company Texas
Albert Frei & Sons, Inc. Colorado
American Aggregates Corporation North Carolina
American Materials Technologies, LLC Tennessee
American Stone Company North Carolina
AR & MJ Frei Limited Partnership Colorado
Bahama Aggregates Company, LLC Delaware
Bahama Cement Company Liberian nonresident domestic
Bahama Rock Limited Bahamas
Bluegrass – Blue Mount, LLC North Carolina
Bluegrass Materials Company, LLC North Carolina
Bluegrass-St. Marys, LLC North Carolina
Brookhollow Corporation Delaware
Campbell’s C-Ment Contracting, Inc. Colorado
Carolina Quarries, Inc. Delaware
CIG MC LLC Colorado
Creole Corporation Delaware
FRI Ready Mix of Tennessee, LLC Florida
Front Range Aggregates LLC Delaware
Granite Canyon Quarry Wyoming
Harding Street Corporation North Carolina
HSMM LLC North Carolina
Kent Sand & Gravel Company, LLC North Carolina
Mardell Trucking Company, Inc. North Carolina
Marlin Acquisition Company 2, Inc. Delaware
Martin Marietta ALTN Aggregates, Inc. Tennessee
Martin Marietta ALTN Holdings, Inc. Delaware
Martin Marietta Arizona, LLC North Carolina
Martin Marietta Bluegrass, LLC North Carolina
Martin Marietta California A&P, LLC North Carolina
Martin Marietta California Ready-Mix, LLC Delaware
Martin Marietta Exchange Entity, LLC North Carolina
Martin Marietta Fleet Management LLC North Carolina
Martin Marietta Funding LLC Delaware
Martin Marietta Inc. North Carolina
Martin Marietta Kansas City, LLC Delaware
Martin Marietta Magnesia Specialties, LLC Delaware
Martin Marietta Marine Finance, LLC California
Martin Marietta Marine Operations, LLC California
Martin Marietta Materials Canada Limited, a Nova Scotia, Canada corporation —
Martin Marietta Materials of Missouri, Inc. North Carolina
Martin Marietta Materials Real Estate Investments, Inc. North Carolina
Martin Marietta Materials Southwest, LLC Delaware
Martin Marietta Materials West Division, LLC North Carolina
Martin Marietta North Texas Cement, LLC Delaware
Martin Marietta Northern California Aggregates, LLC Delaware
Martin Marietta Pacific District Cement LLC Delaware
Martin Marietta San Diego Aggregates LLC California
Martin Marietta South Texas Cement, LLC Delaware
Martin Marietta Southeast AGG Operations, LLC Delaware
Martin Marietta Southeast Aggregates, Inc. Delaware
Martin Marietta Southern California Aggregates, LLC Delaware
Martin Marietta Southwest Ready-Mix, Inc. Delaware
Martin Marietta Stockton, LLC Delaware
Martin Marietta Texas Ready-Mix, LLC Texas
Martin Marietta Transportation and Distribution, LLC North Carolina
Maryland Materials, Inc. North Carolina
Material Producers, Inc. Oklahoma
Meridian Aggregates Company Northwest, LLC North Carolina
Meridian Aggregates Company, a Limited Partnership North Carolina
Meridian Aggregates Investments, LLC North Carolina
Meridian Granite Company North Carolina
Mid-State Construction & Materials, Inc. Arkansas
Mission Valley Rock Co., LLC California
MMM Mexico I, LLC North Carolina
MMM Mexico, LLC North Carolina
MMMW AGG, LLC North Carolina
MMMW CMT, LLC North Carolina
MTD Pipeline LLC Delaware
Mystic Valley LLC Colorado
Northeast Land and Material Company, Inc. North Carolina
Palmetto Sand Company Inc. South Carolina
Panadero Midco, LLC North Carolina
PCAz Leasing, LLC Arizona
Petrillo Brothers, Inc. North Carolina
Piedras y Arenas Baja, S. de R.L. de C.V. Mexico
Powderly Transportation, Inc. North Carolina
Premier Magnesia, LLC Delaware
R&S Sand & Gravel, LLC North Carolina
Riverside Cement Company California
Rock & Rail LLC Colorado
Rocky Mountain Materials and Asphalt, Inc. Colorado
Rocky Mountain Premix, Inc. Colorado
Rocky Mountain Ready Mix Concrete, Inc. Colorado
Royal Gorge Express, LLC Colorado
St. Marys Sand Company, LLC North Carolina
Suburban Acquisition Company Colorado
Theodore Holding, LLC Delaware
Tiller Corporation North Carolina
TXI Aviation, Inc. dba TXI Retail Texas
TXI California, LLC Delaware
TXI Riverside, LLC Delaware
Valley Stone LLC Virginia
What counts as a subsidiary

A subsidiary is a separate legal entity this company controls; it is not the same thing as a brand, a division or an office. These entities do not file with the SEC in their own right, so there is no separate page to open for them.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Sources and technical notes

Every figure on this page comes from filings to the U.S. SEC via EDGAR. Nothing here is estimated, and nothing is taken from press coverage or company websites.

Share count: cover page of the latest filing (dei:EntityCommonStockSharesOutstanding), taken from MARTIN MARIETTA MATERIALS INC’s own filings and multiplied by our closing price. Full method.

What that share count means

the share count the company itself prints on the cover of its most recent filing, as of the date it signed that filing.

We do not take a market cap from a data vendor, and we do not estimate one: the figure is a share count from MARTIN MARIETTA MATERIALS INC’s own SEC filings multiplied by the closing price we hold for the same stock.