MLM

Martin Marietta Materials, Inc.$536.67-32.38 (-5.68%)

Prev Close$569.66·MCap$33.60B·P/E28.55·Vol883.2K·Yield0.01%

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Buys (12M)

$0.00

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Sells (12M)

$8.85M

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Net Activity

Net Seller

$8.85M

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Active Insiders

last 12 mo

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 $33.60B.

MLM Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Feb 19, 2026	Nye C Howard	Chairman, Pres & CEO	Sell	9,717	$666.53	$6.48M	0
Feb 19, 2026	Petro Michael J	SVP and CFO	Sell	758	$666.53	$505.2K	0
Feb 17, 2026	Cardin Robert J	SVP, Controller & CAO	Sell	822	$666.53	$547.9K	0
Feb 17, 2026	Flynn Jason Paul	SVP and CIO	Sell	107	$666.53	$71.3K	0
Dec 17, 2025	BAR ROSELYN R	Executive Vice President	Sell	66	$629.49	$41.5K	0
Dec 17, 2025	Cardin Robert J	SVP, Controller & CAO	Sell	32	$629.49	$20.1K	0
Dec 17, 2025	McCunniff Donald A.	EVP and CHRO	Sell	50	$629.49	$31.5K	0
Dec 17, 2025	Nye C Howard	Chairman, Pres & CEO	Sell	298	$629.49	$187.6K	0
Dec 3, 2025	BAR ROSELYN R	Executive Vice President	Sell	420	$615.25	$258.4K	0
Dec 3, 2025	Flynn Jason Paul	SVP and CIO	Sell	123	$615.25	$75.7K	0
Aug 11, 2025	PEREZ LAREE E	Director	Sell	1,038	$613.32	$636.6K	0
Mar 6, 2025	McCunniff Donald A.	EVP and CHRO	Sell	1,332	$475.00	$632.7K	0
Mar 5, 2025	Petro Michael J	SVP - Strategy and Development	Buy	550	$454.37	$249.9K	0
Feb 25, 2025	BAR ROSELYN R	Executive Vice President	Sell	402	$490.64	$197.2K	0
Feb 25, 2025	Brooks Oliver W	SVP - Enterprise Excellence	Sell	188	$490.64	$92.2K	0
Feb 25, 2025	Cardin Robert J	Sr. VP, Controller and CAO	Sell	216	$490.64	$106.0K	0
Feb 25, 2025	Nickolas James AJ	EVP and CFO	Sell	450	$490.64	$220.8K	0
Feb 25, 2025	Nye C Howard	Chairman, Pres & CEO	Sell	2,032	$490.64	$997.0K	0
Feb 25, 2025	Petro Michael J	SVP - Strategy and Development	Sell	200	$490.64	$98.1K	0
Feb 20, 2025	BAR ROSELYN R	Executive Vice President	Sell	2,126	$533.99	$1.14M	0
Feb 20, 2025	Brooks Oliver W	SVP - Enterprise Excellence	Sell	134	$533.99	$71.6K	0
Feb 20, 2025	Cardin Robert J	Sr. VP, Controller and CAO	Sell	1,069	$533.99	$570.8K	0
Feb 20, 2025	Nickolas James AJ	EVP and CFO	Sell	2,106	$533.99	$1.12M	0
Feb 20, 2025	Nye C Howard	Chairman, Pres & CEO	Sell	11,498	$533.99	$6.14M	0
Feb 20, 2025	Petro Michael J	SVP - Strategy and Development	Sell	1,211	$533.99	$646.7K	0
Mar 15, 2024	BAR ROSELYN R	EVP, General Counsel and Secy	Sell	10,000	$603.29	$6.03M	59,970
Mar 6, 2024	Nye C Howard	Chairman, Pres & CEO	Sell	20,000	$604.26	$12.09M	134,640
Feb 20, 2024	COLE SUE W	Director	Sell	1,724	$543.48	$937.0K	20,636
Aug 22, 2023	LaTorre Craig M	Sr. VP, CHRO	Sell	1,934	$431.68	$834.9K	9,731
Aug 1, 2023	LaTorre Craig M	Sr. VP, CHRO	Sell	500	$447.09	$223.5K	11,665
Nov 18, 2022	COLE SUE W	Director	Sell	1,685	$355.61	$599.2K	21,155
Mar 11, 2021	Nye C Howard	Chairman, Pres & CEO	Sell	20,000	$337.40	$6.75M	101,226

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	Shares After
Feb 19, 2026	Nye C Howard	Chairman, Pres & CEO	Sell	9,717	$666.53	$6.48M	0
Feb 19, 2026	Petro Michael J	SVP and CFO	Sell	758	$666.53	$505.2K	0
Feb 17, 2026	Cardin Robert J	SVP, Controller & CAO	Sell	822	$666.53	$547.9K	0
Feb 17, 2026	Flynn Jason Paul	SVP and CIO	Sell	107	$666.53	$71.3K	0
Dec 17, 2025	BAR ROSELYN R	Executive Vice President	Sell	66	$629.49	$41.5K	0
Dec 17, 2025	Cardin Robert J	SVP, Controller & CAO	Sell	32	$629.49	$20.1K	0
Dec 17, 2025	McCunniff Donald A.	EVP and CHRO	Sell	50	$629.49	$31.5K	0
Dec 17, 2025	Nye C Howard	Chairman, Pres & CEO	Sell	298	$629.49	$187.6K	0
Dec 3, 2025	BAR ROSELYN R	Executive Vice President	Sell	420	$615.25	$258.4K	0
Dec 3, 2025	Flynn Jason Paul	SVP and CIO	Sell	123	$615.25	$75.7K	0
Aug 11, 2025	PEREZ LAREE E	Director	Sell	1,038	$613.32	$636.6K	0
Mar 6, 2025	McCunniff Donald A.	EVP and CHRO	Sell	1,332	$475.00	$632.7K	0
Feb 25, 2025	BAR ROSELYN R	Executive Vice President	Sell	402	$490.64	$197.2K	0
Feb 25, 2025	Brooks Oliver W	SVP - Enterprise Excellence	Sell	188	$490.64	$92.2K	0
Feb 25, 2025	Cardin Robert J	Sr. VP, Controller and CAO	Sell	216	$490.64	$106.0K	0
Feb 25, 2025	Nickolas James AJ	EVP and CFO	Sell	450	$490.64	$220.8K	0
Feb 25, 2025	Nye C Howard	Chairman, Pres & CEO	Sell	2,032	$490.64	$997.0K	0
Feb 25, 2025	Petro Michael J	SVP - Strategy and Development	Sell	200	$490.64	$98.1K	0
Feb 20, 2025	BAR ROSELYN R	Executive Vice President	Sell	2,126	$533.99	$1.14M	0
Feb 20, 2025	Brooks Oliver W	SVP - Enterprise Excellence	Sell	134	$533.99	$71.6K	0
Feb 20, 2025	Cardin Robert J	Sr. VP, Controller and CAO	Sell	1,069	$533.99	$570.8K	0
Feb 20, 2025	Nickolas James AJ	EVP and CFO	Sell	2,106	$533.99	$1.12M	0
Feb 20, 2025	Nye C Howard	Chairman, Pres & CEO	Sell	11,498	$533.99	$6.14M	0
Feb 20, 2025	Petro Michael J	SVP - Strategy and Development	Sell	1,211	$533.99	$646.7K	0
Mar 15, 2024	BAR ROSELYN R	EVP, General Counsel and Secy	Sell	10,000	$603.29	$6.03M	59,970
Mar 6, 2024	Nye C Howard	Chairman, Pres & CEO	Sell	20,000	$604.26	$12.09M	134,640
Feb 20, 2024	COLE SUE W	Director	Sell	1,724	$543.48	$937.0K	20,636
Aug 22, 2023	LaTorre Craig M	Sr. VP, CHRO	Sell	1,934	$431.68	$834.9K	9,731
Aug 1, 2023	LaTorre Craig M	Sr. VP, CHRO	Sell	500	$447.09	$223.5K	11,665
Nov 18, 2022	COLE SUE W	Director	Sell	1,685	$355.61	$599.2K	21,155
Mar 11, 2021	Nye C Howard	Chairman, Pres & CEO	Sell	20,000	$337.40	$6.75M	101,226