MLM

Basic Materials

Martin Marietta Materials, Inc.

$582.58-4.79 (-0.82%)

Prev Close

$587.37

Open

$591.19

High

$595.00

Low

$581.74

Volume

470.5K

Market Cap

$35.43B

P/E

30.99

Div Yield

0.01%

Over the past 12 months, insider activity at Martin Marietta Materials, Inc. (MLM) has been exclusively selling, with 0 insider purchases totaling $0.00 and 11 insider sales totaling $8.85M. The most recent insider transaction was by Nye C Howard (Chairman, Pres & CEO), who sold $6.48M worth of shares on Feb 19, 2026. Martin Marietta Materials, Inc. operates in the Basic Materials sector, within the Construction Materials industry, with a market cap of $35.43B.

Buys (12M)

$0.00

Sells (12M)

$8.85M

Net Activity

Net Seller

$8.85M

Active Insiders

last 12 mo

MLM Price Chart

MLM Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value
Feb 19, 2026↗	Nye C Howard	Chairman, Pres & CEO	Sell	9,717	$666.53	$6.48M
Feb 19, 2026↗	Petro Michael J	SVP and CFO	Sell	758	$666.53	$505.2K
Feb 17, 2026↗	Cardin Robert J	SVP, Controller & CAO	Sell	822	$666.53	$547.9K
Feb 17, 2026↗	Flynn Jason Paul	SVP and CIO	Sell	107	$666.53	$71.3K
Dec 17, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	66	$629.49	$41.5K
Dec 17, 2025↗	Cardin Robert J	SVP, Controller & CAO	Sell	32	$629.49	$20.1K
Dec 17, 2025↗	McCunniff Donald A.	EVP and CHRO	Sell	50	$629.49	$31.5K
Dec 17, 2025↗	Nye C Howard	Chairman, Pres & CEO	Sell	298	$629.49	$187.6K
Dec 3, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	420	$615.25	$258.4K
Dec 3, 2025↗	Flynn Jason Paul	SVP and CIO	Sell	123	$615.25	$75.7K
Aug 11, 2025↗	PEREZ LAREE E	Director	Sell	1,038	$613.32	$636.6K
Mar 6, 2025↗	McCunniff Donald A.	EVP and CHRO	Sell	1,332	$475.00	$632.7K
Mar 5, 2025↗	Petro Michael J	SVP - Strategy and Development	Buy	550	$454.37	$249.9K
Feb 25, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	402	$490.64	$197.2K
Feb 25, 2025↗	Brooks Oliver W	SVP - Enterprise Excellence	Sell	188	$490.64	$92.2K
Feb 25, 2025↗	Cardin Robert J	Sr. VP, Controller and CAO	Sell	216	$490.64	$106.0K
Feb 25, 2025↗	Nickolas James AJ	EVP and CFO	Sell	450	$490.64	$220.8K
Feb 25, 2025↗	Nye C Howard	Chairman, Pres & CEO	Sell	2,032	$490.64	$997.0K
Feb 25, 2025↗	Petro Michael J	SVP - Strategy and Development	Sell	200	$490.64	$98.1K
Feb 20, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	2,126	$533.99	$1.14M
Feb 20, 2025↗	Brooks Oliver W	SVP - Enterprise Excellence	Sell	134	$533.99	$71.6K
Feb 20, 2025↗	Cardin Robert J	Sr. VP, Controller and CAO	Sell	1,069	$533.99	$570.8K
Feb 20, 2025↗	Nickolas James AJ	EVP and CFO	Sell	2,106	$533.99	$1.12M
Feb 20, 2025↗	Nye C Howard	Chairman, Pres & CEO	Sell	11,498	$533.99	$6.14M
Feb 20, 2025↗	Petro Michael J	SVP - Strategy and Development	Sell	1,211	$533.99	$646.7K

MLM Insider Buying Activity

The following table shows recent insider purchases of Martin Marietta Materials, Inc. (MLM) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Mar 5, 2025↗	Petro Michael J	SVP - Strategy and Development	Buy	550	$454.37	$249.9K	0

MLM Insider Selling Activity

The following table shows recent insider sales of Martin Marietta Materials, Inc. (MLM) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value
Feb 19, 2026↗	Nye C Howard	Chairman, Pres & CEO	Sell	9,717	$666.53	$6.48M
Feb 19, 2026↗	Petro Michael J	SVP and CFO	Sell	758	$666.53	$505.2K
Feb 17, 2026↗	Cardin Robert J	SVP, Controller & CAO	Sell	822	$666.53	$547.9K
Feb 17, 2026↗	Flynn Jason Paul	SVP and CIO	Sell	107	$666.53	$71.3K
Dec 17, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	66	$629.49	$41.5K
Dec 17, 2025↗	Cardin Robert J	SVP, Controller & CAO	Sell	32	$629.49	$20.1K
Dec 17, 2025↗	McCunniff Donald A.	EVP and CHRO	Sell	50	$629.49	$31.5K
Dec 17, 2025↗	Nye C Howard	Chairman, Pres & CEO	Sell	298	$629.49	$187.6K
Dec 3, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	420	$615.25	$258.4K
Dec 3, 2025↗	Flynn Jason Paul	SVP and CIO	Sell	123	$615.25	$75.7K
Aug 11, 2025↗	PEREZ LAREE E	Director	Sell	1,038	$613.32	$636.6K
Mar 6, 2025↗	McCunniff Donald A.	EVP and CHRO	Sell	1,332	$475.00	$632.7K
Feb 25, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	402	$490.64	$197.2K
Feb 25, 2025↗	Brooks Oliver W	SVP - Enterprise Excellence	Sell	188	$490.64	$92.2K
Feb 25, 2025↗	Cardin Robert J	Sr. VP, Controller and CAO	Sell	216	$490.64	$106.0K
Feb 25, 2025↗	Nickolas James AJ	EVP and CFO	Sell	450	$490.64	$220.8K
Feb 25, 2025↗	Nye C Howard	Chairman, Pres & CEO	Sell	2,032	$490.64	$997.0K
Feb 25, 2025↗	Petro Michael J	SVP - Strategy and Development	Sell	200	$490.64	$98.1K
Feb 20, 2025↗	BAR ROSELYN R	Executive Vice President	Sell	2,126	$533.99	$1.14M
Feb 20, 2025↗	Brooks Oliver W	SVP - Enterprise Excellence	Sell	134	$533.99	$71.6K
Feb 20, 2025↗	Cardin Robert J	Sr. VP, Controller and CAO	Sell	1,069	$533.99	$570.8K
Feb 20, 2025↗	Nickolas James AJ	EVP and CFO	Sell	2,106	$533.99	$1.12M
Feb 20, 2025↗	Nye C Howard	Chairman, Pres & CEO	Sell	11,498	$533.99	$6.14M
Feb 20, 2025↗	Petro Michael J	SVP - Strategy and Development	Sell	1,211	$533.99	$646.7K