Martin Marietta Stock Leadership
| MLM Stock | USD 590.38 -10.11 -1.68% |
The holders, transactions, and concentration data describe Martin Marietta's investor base. Institutions own 99.2% of Martin Marietta and insiders hold 80.5%. Quarter-over-quarter institutional ownership changes can signal accumulation or distribution trends.
Insider Sentiment
SellingBuying
33 · Mostly Selling
About 67% of Martin Marietta's corporate insiders are selling. Overall insider positioning in Martin Marietta Materials stock suggests many insiders are cautious at this time.
Latest Trades
| 2026-03-30 | Ro Khanna | Acquired @ 573.9 | |||
| 2026-03-23 | Ro Khanna | Disposed @ 578.22 | |||
| 2026-03-09 | April McClain Delaney | Acquired @ 612.67 | |||
| 2026-02-23 | Michael T. McCaul | Disposed @ 684.16 | |||
| 2026-02-17 | Michael T. McCaul | Disposed @ 666.58 | |||
| 2026-01-29 | Ro Khanna | Disposed @ 652.22 | |||
| 2026-01-22 | Ro Khanna | Disposed @ 652.2 | |||
| 2025-12-02 | April McClain Delaney | Acquired @ 608.39 | |||
| 2025-11-03 | Ro Khanna | Acquired @ 619.39 | |||
| 2025-10-28 | Ro Khanna | Disposed @ 617.26 | |||
| 2025-10-27 | Michael T. McCaul | Disposed @ 616.43 | |||
| 2025-09-24 | Ro Khanna | Acquired @ 607.07 | |||
| 2025-09-23 | Val T. Hoyle | Disposed @ 614.72 | |||
| 2025-08-21 | Michael T. McCaul | Disposed @ 600.86 | |||
| 2025-08-08 | Laree E Perez | Disposed 1038 @ 613.32 | View |
Insider trading activity in Martin Marietta reflects internal positioning, transaction timing, and alignment between management behavior and market conditions, while remaining subject to formal disclosure requirements under securities law. Transaction motives are not always purely directional, which is why pattern analysis across multiple insiders strengthens the signal.
Acquired vs Disposed
Filed vs Not Filed
For Martin Marietta Materials, insider trading sentiment is often gauged by the transaction pattern of people closest to the business, including officers, directors, and large holders. In practice, insider trading data is contextual rather than absolute because corporate insiders transact for several reasons that are not purely directional.
Martin Marietta |
Martin Marietta's Workforce Through the Years
Employee-history analysis for Martin Marietta reveals whether the business is expanding capacity, defending margins, or adjusting to softer demand. Workforce trends reflect structural shifts in production scale, cost discipline, and global operating strategy. Current disclosures indicate about 9,600 employees. Reported workforce figures may vary across disclosures and time periods; aggregated or historical datasets can reflect different figures depending on reporting scope and methodology.Macro event markers
Latest Congressional Trading
Public records of congressional trades in Martin Marietta Materials provide a regulated view of how disclosure rules are applied around politically sensitive names. In practice, this data is another governance and disclosure signal rather than a standalone trading system.
| 2026-04-08 | Representative April Delaney | Acquired under $15,000 | Verify | ||
| 2026-01-06 | Representative April Delaney | Acquired under $15,000 | Verify | ||
| 2025-11-14 | Representative Ro Khanna | Acquired under $15,000 | Verify | ||
| 2025-11-11 | Representative Michael McCaul | Acquired under $15,000 | Verify | ||
| 2025-10-10 | Representative Valerie Hoyle | Acquired under $15,000 | Verify | ||
| 2023-07-25 | Senator Dan Sullivan | Acquired under $15,000 | Verify | ||
| 2018-10-03 | Representative Alan S Lowenthal | Acquired $15,000 to $50,000 | Verify |
Management Team Effectiveness
MLM has Return on Asset of 4.78% suggesting productive asset utilization. This is middle-of-the-road for the sector. Martin Marietta also reports a return on shareholders' equity (ROE) of 9.47%, suggesting productive equity utilization.As of December 31, 2025, Common Stock Shares Outstanding is holding steady around 60.5 million.
Stock Institutional Investors
At large-cap scale, institutional coverage and secondary-market liquidity are typically well established. The holder split in Martin Marietta Materials separates passive index allocation from active institutional positioning. Shares outstanding are near 60.05 million. Whether the institutional base is growing or shrinking quarter over quarter matters more than the current snapshot.
| Shares | Morgan Stanley - Brokerage Accounts | 2025-12-31 | 1.4 M | Baillie Gifford & Co Limited. | 2025-12-31 | 1.2 M | Select Equity Group Lp | 2025-12-31 | 1.1 M | The Goldman Sachs Group Inc | 2025-12-31 | 789.5 K | Amvescap Plc. | 2025-12-31 | 769.9 K | Alkeon Capital Management, Llc | 2025-12-31 | 747.4 K | Gardner Russo & Gardner | 2025-12-31 | 726.6 K | King Luther Capital Management Corp | 2025-12-31 | 690.1 K | Northern Trust Corp | 2025-12-31 | 599.7 K | Vanguard Group Inc | 2025-12-31 | 7.4 M | Blackrock Inc | 2025-12-31 | 4.5 M |
Insider Trading Activities
Insider disclosures for Martin Marietta Materials show how people closest to the business are behaving as market expectations change. At large-cap scale, institutional coverage and secondary-market liquidity are typically well established. These records work best as context, not as standalone buy-or-sell signals.
Outstanding Bonds
Corporate bonds issued by Martin Marietta Materials matter because they shape interest expense, maturity risk, and the flexibility management has during tighter credit conditions. At large-cap scale, institutional coverage and secondary-market liquidity are typically well established. Bond investors and equity investors often care about the same cash flows, but they rank the risks differently.
| MARTIN MARIETTA MATERIALS Corp BondUS573284AX46 | View | |
| US573284AV89 Corp BondUS573284AV89 | View | |
| MARTIN MARIETTA MATERIALS Corp BondUS573284AW62 | View | |
| MARTIN MARIETTA MATLS Corp BondUS573284AT34 | View | |
| MARTIN MARIETTA MATLS Corp BondUS573284AU07 | View | |
| MARTIN MARIETTA MATLS Corp BondUS573284AQ94 | View | |
| MARTIN MARIETTA MATLS Corp BondUS573284AJ51 | View | |
| MPLX LP 4125 Corp BondUS55336VAK61 | View |
Corporate Filings
F3 | 5th of May 2026 The report used by insiders such as officers, directors, and major shareholders (beneficial owners holding more than 10% of any class of the company's equity securities) to declare their ownership of a company's stock | |
8K | 30th of April 2026 Report filed with the SEC to announce major events that shareholders should know about | |
13A | 29th of April 2026 The form used by investors holding more than 5% of a company's stock, to report their beneficial ownership pursuant to Rule 13d-1 or Rule 13d-2 under the Securities Exchange Act of 1934 | |
8K | 27th of April 2026 Report filed with the SEC to announce major events that shareholders should know about | |
| 15th of April 2026 Other Reports | ||
13A | 27th of March 2026 An amended filing to the original Schedule 13G | |
F3 | 3rd of March 2026 The report used by insiders such as officers, directors, and major shareholders (beneficial owners holding more than 10% of any class of the company's equity securities) to declare their ownership of a company's stock | |
F4 | 2nd of March 2026 The report filed by a party regarding the acquisition or disposition of a company's common stock, as well as derivative securities such as options, warrants, and convertible securities |
Shares in Circulation | First Issued 1994-03-31 | Previous Quarter 60.5 million | Current Value 60.4 million | Average Shares Outstanding 52.31 million | Quarterly Volatility 8.34 million |
Macro event markers
Holders Distribution
A large institutional presence around Martin Marietta Materials deserves attention because well-resourced participants establish or unwind positions quickly enough to change the market character of the security. One practical risk is that institutions can own millions of shares, so concentrated selling can pressure the stock quickly once sentiment changes.
Market Cap and Value
Workforce Comparison
Martin Marietta Materials is rated below average in number of employees compared to key competitors. The total workforce of Materials industry is now estimated at about 270,806. Martin Marietta holds roughly 9,600 in number of employees claiming about 4% of all equities under Materials space.
Profit Margins
MLM has Net Profit Margin of 40.0%. In the same way, it shows Net Operating Margin of 13.0%.| Current Value | Last Year | Change From Last Year | 10 Year Trend | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Gross Profit Margin | 26.00% | 29.98% |
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| Net Profit Margin | 18.00% | 17.37% |
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| Operating Profit Margin | 13.00% | 23.26% |
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| Pretax Profit Margin | 11.00% | 19.68% |
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| Return On Assets | 6.77% | 6.08% |
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| Return On Equity | 14.00% | 11.33% |
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Insider Trading History
The insider trade history for Martin Marietta Materials reveals whether executives were buying or selling during key price moves. Pattern analysis matters more than any single trade. The full record tells the real story.
| Buy/Sell Ratio | # Purchases Trades | # Sales Trades | Total Shares Purchased | Total Shares Sold | |
|---|---|---|---|---|---|
| 2026-03-01 | 1.3846 | 18 | 13 | 74,538 | 15,446 |
| 2025-12-01 | 0.4286 | 3 | 7 | 187.00 | 1,477 |
| 2025-09-01 | 4.0 | 4 | 1 | 2,010 | 1,038 |
| 2025-03-01 | 1.5 | 21 | 14 | 57,527 | 24,296 |
| 2024-12-01 | 0.5 | 3 | 6 | 194.00 | 2,747 |
| 2024-09-01 | 1.5 | 3 | 2 | 217.00 | 1,332 |
| 2024-06-01 | 6.0 | 12 | 2 | 2,839 | 1,671 |
| 2024-03-01 | 0.7778 | 21 | 27 | 58,272 | 56,296 |
| 2023-12-01 | 0.5 | 4 | 8 | 276.00 | 4,216 |
| 2023-09-01 | 1.0 | 4 | 4 | 287.00 | 3,303 |
| 2023-03-01 | 1.2353 | 21 | 17 | 51,759 | 24,453 |
| 2022-12-01 | 0.625 | 5 | 8 | 441.00 | 6,074 |
| 2022-09-01 | 1.6667 | 5 | 3 | 451.00 | 2,672 |
| 2022-06-01 | 16.0 | 16 | 1 | 5,129 | 0.45 |
| 2022-03-01 | 1.0952 | 23 | 21 | 73,218 | 31,732 |
| 2021-12-01 | 0.8333 | 5 | 6 | 388.00 | 4,435 |
| 2021-09-01 | 2.5 | 5 | 2 | 410.00 | 878.00 |
| 2021-03-01 | 1.0476 | 22 | 21 | 57,437 | 41,899 |
| 2020-12-01 | 0.8889 | 8 | 9 | 90,555 | 102,684 |
| 2020-09-01 | 2.5 | 5 | 2 | 841.00 | 1,218 |
| 2020-06-01 | 2.7143 | 19 | 7 | 24,362 | 39,393 |
| 2020-03-01 | 1.3684 | 26 | 19 | 61,034 | 21,651 |
| 2019-12-01 | 1.4286 | 10 | 7 | 7,916 | 16,389 |
| 2019-09-01 | 0.9375 | 15 | 16 | 29,169 | 73,605 |
| 2019-06-01 | 1.9 | 19 | 10 | 27,720 | 45,869 |
| 2019-03-01 | 1.1111 | 30 | 27 | 65,823 | 20,061 |
| 2018-12-01 | 1.0833 | 13 | 12 | 7,334 | 9,773 |
| 2018-09-01 | 11.0 | 11 | 1 | 6,737 | 2,250 |
| 2018-06-01 | 1.1905 | 25 | 21 | 29,499 | 54,340 |
| 2018-03-01 | 1.3333 | 28 | 21 | 39,399 | 19,102 |
| 2017-12-01 | 1.1667 | 7 | 6 | 516.59 | 3,944 |
| 2017-09-01 | 2.6667 | 8 | 3 | 7,646 | 0.00 |
| 2017-06-01 | 1.0 | 19 | 19 | 30,940 | 59,906 |
| 2017-03-01 | 1.5789 | 30 | 19 | 53,315 | 29,679 |
| 2016-12-01 | 0.6 | 18 | 30 | 20,888 | 45,483 |
| 2016-09-01 | 1.2 | 12 | 10 | 14,695 | 42,355 |
| 2016-06-01 | 0.8889 | 24 | 27 | 56,740 | 128,428 |
| 2016-03-01 | 2.8 | 28 | 10 | 50,997 | 44,000 |
| 2015-12-01 | 1.1 | 11 | 10 | 23,819 | 64,166 |
| 2015-09-01 | 3.0 | 12 | 4 | 7,171 | 12,000 |
| 2015-06-01 | 1.9524 | 41 | 21 | 109,537 | 76,698 |
| 2015-03-01 | 2.0 | 20 | 10 | 22,865 | 24,000 |
| 2014-12-01 | 2.0 | 12 | 6 | 6,283 | 1,768 |
| 2014-09-01 | 2.4286 | 17 | 7 | 77,126 | 20,150 |
| 2014-06-01 | 2.0 | 48 | 24 | 88,464 | 65,045 |
| 2014-03-01 | 1.3571 | 19 | 14 | 20,192 | 26,040 |
| 2013-12-01 | 2.25 | 9 | 4 | 1,004 | 1,939 |
| 2013-06-01 | 1.3056 | 47 | 36 | 167,642 | 193,160 |
| 2013-03-01 | 0.625 | 20 | 32 | 19,833 | 28,850 |
| 2012-12-01 | 0.5652 | 13 | 23 | 30,351 | 124,324 |
| 2012-09-01 | 2.0 | 12 | 6 | 9,985 | 14,885 |
| 2012-06-01 | 6.5 | 39 | 6 | 78,261 | 16,532 |
| 2012-03-01 | 13.0 | 13 | 1 | 5,622 | 0.00 |
| 2011-12-01 | 1.8 | 9 | 5 | 959.00 | 10,752 |
| 2011-09-01 | 2.25 | 9 | 4 | 635.00 | 676,445 |
| 2011-06-01 | 1.8571 | 39 | 21 | 64,878 | 33,848 |
| 2011-03-01 | 14.0 | 14 | 1 | 8,366 | 2,980 |
| 2010-12-01 | 0.8333 | 10 | 12 | 477.00 | 28,885 |
| 2010-06-01 | 2.0952 | 44 | 21 | 61,770 | 39,234 |
| 2010-03-01 | 10.5 | 21 | 2 | 21,347 | 3,000 |
| 2009-12-01 | 0.5714 | 8 | 14 | 474.00 | 66,941 |
| 2009-09-01 | 2.0 | 8 | 4 | 434.00 | 14,490 |
| 2009-06-01 | 1.7727 | 39 | 22 | 163,863 | 118,758 |
| 2008-12-01 | 1.9 | 19 | 10 | 866,628 | 19,717 |
| 2008-09-01 | 7.0 | 14 | 2 | 444,011 | 2.00 |
| 2008-06-01 | 20.5 | 41 | 2 | 205,618 | 1,935,794 |
| 2008-03-01 | 5.8 | 29 | 5 | 37,202 | 3,002 |
| 2007-12-01 | 0.9 | 9 | 10 | 66,887 | 86,178 |
| 2007-09-01 | 1.0 | 13 | 13 | 271,529 | 142,860 |
| 2007-06-01 | 1.8519 | 50 | 27 | 258,204 | 167,324 |
| 2007-03-01 | 0.6727 | 37 | 55 | 214,660 | 394,595 |
| 2006-12-01 | 0.3621 | 21 | 58 | 155,842 | 420,892 |
| 2006-09-01 | 0.7727 | 17 | 22 | 121,398 | 272,306 |
| 2006-06-01 | 1.4412 | 49 | 34 | 220,990 | 174,100 |
| 2006-03-01 | 0.4706 | 48 | 102 | 200,775 | 480,594 |
| 2005-12-01 | 0.0835 | 36 | 431 | 278,929 | 643,096 |
| 2005-09-01 | 0.2632 | 25 | 95 | 155,506 | 309,832 |
| 2005-06-01 | 9.2 | 46 | 5 | 154,365 | 5,762 |
| 2005-03-01 | 2.5 | 30 | 12 | 53,296 | 57,358 |
| 2004-12-01 | 0.7143 | 10 | 14 | 1,215 | 14,174 |
| 2004-09-01 | 25.0 | 25 | 1 | 275,077 | 5,000 |
| 2004-03-01 | 1.5 | 21 | 14 | 42,004 | 30,000 |
| 2003-12-01 | 0.2632 | 10 | 38 | 27,723 | 56,379 |
| 2003-09-01 | 3.1667 | 19 | 6 | 261,515 | 9,500 |
Notable Stakeholders
Stakeholder analysis for Martin Marietta is useful because companies often face trade-offs among groups that want very different outcomes from the same business. The practical value is in seeing where interests align, where they conflict, and how that tension could influence execution.
| C Nye | Chairman, CEO and President and President of Aggregates Business & Chair of Magnesia Specialties Business | Profile | |
| Kirk Light | President of Cement & Southwest Ready Mix | Profile | |
| Ron Kopplin | East Division President | Profile | |
| Michael Petro | Senior VP & CFO | Profile | |
| Robert Cardin | Senior VP, Controller & Chief Accounting Officer | Profile | |
| Chris Samborski | Executive VP & COO | Profile | |
| Donald McCunniff | Executive VP & Chief Human Resources Officer | Profile | |
| George Schoen | Executive VP, General Counsel & Corporate Secretary | Profile | |
| Jason Flynn | Senior VP & CIO | Profile | |
| Suzanne Osberg | Vice President of Investor Relations | Profile | |
| Bob Meskimen | Pres VP | Profile |
Management Information & Data Sources
Martin Marietta is a large-cap company across Construction Materials, Building Materials, Basic Materials. Insider transaction activity tracks recent buying and selling by executives and directors. Changes in insider ownership are most informative when read alongside earnings trends and market conditions. CEO is C Nye with 9,600 employees and 11 reported executives.
Martin Marietta Materials inputs come from periodic company reporting and market reference feeds and are mapped into a consistent reporting framework. Analyst inputs may be included when coverage is available. Insider and management fields are mapped from published filings and company disclosures.
Editorial review and methodology oversight provided by: Rifka Kats, Member of Macroaxis Editorial Board
Workforce Efficiency and Productivity
Workforce efficiency at Martin Marietta Materials reveals how effectively labor resources are being converted into revenue and earnings over time. The company operates within the Basic Materials sector and the Building Materials industry.
Martin Marietta Manpower Efficiency
Return on Martin Marietta Manpower
| Revenue Per Employee | 681.7K | |
| Revenue Per Executive | 594.9M | |
| Net Income Per Employee | 118.4K | |
| Net Income Per Executive | 103.4M | |
| Working Capital Per Employee | 239.4K | |
| Working Capital Per Executive | 208.9M |