Martin Marietta Materials, Inc. (MLM)
Aggregates quarries with cement, concrete and magnesia plants. Read October 19, 2026 from the annual report for the period ending December 31, 2025, filed February 19, 2026. Ranked 36 of the 43 Basic Materials companies read so far, by the share within reach now.
Within reach now
15%
End of 2028
22%
Employees, annual report
9,600
Leading staffing pattern
Nonmetallic Mineral Mining and Quarrying
Share of the working time within reach, long-run pace, four times in five
- Now15%
- End of 202720%
- End of 202822%
- End of 203022%
What changes for its people by the end of 2028, by its industries' figures
- Stays with people 72%
- Becomes checking a model's work 20%
- Handed over with lighter checks 6%
Martin Marietta states approximately 9,600 employees at January 31, 2026, 7,100 hourly and 2,500 salaried, 1,200 of them union represented, with aggregates at 81% of revenue and cement, ready-mix, asphalt and the magnesia and lime specialties the rest, and no count by segment, so the quarries take three quarters and the plants the rest by revenue and description (c).
The figures on this page come from the company's own annual report and from BLS staffing patterns for its industries, never from a roster. They are estimates with a stated method. Nothing here says what the company will do: within reach is not a forecast of jobs lost or of savings.
What follows from the reading
Share of working time within reach of AI, on the long-run pace at four in five: 15% now, 20% at the end of 2027, 22% at the end of 2028, 22% at the end of 2030. By the patterns, the work is about 22% desk work, 9% people work and 69% body work. These are the site's industry estimates weighted by the shares below: estimates with a stated method and range, not a forecast of what the company will do. By the same patterns, at the end of 2028 about 72% of the working time stays with people (conversation, in-person and hands-on work), 20% becomes checking a model's work and 6% could be handed over with lighter checks, from the industries' own figures, not the company's roles.
Headcount
9,600 employees as of January 31, 2026 (stated). The filing counts employees by status, not by country; its operations are in U.S. states with quarries in the Bahamas and Canada.
The filing: “Human Capital Resources As of January 31, 2026, the Company has approximately 9,600 employees, of which approximately 7,100 are hourly employees and approximately 2,500 are salaried employees.”
The workforce as industry patterns
| Pattern | Share | Reason, from the filing |
|---|---|---|
| Nonmetallic Mineral Mining and Quarrying | 75% | The aggregates business, 81% of revenue from quarries and sales yards, with 7,100 hourly employees across the company and no count by segment, takes three quarters by revenue and description (c), as Vulcan was read. |
| Nonmetallic Mineral Product Manufacturing | 25% | The cement, ready-mixed concrete and asphalt operations (16% of revenue) and the Specialties segment's magnesia and lime plants at Woodville, Manistee and Gabbs (7%), counted by no employee figure, take the rest by revenue and description (c). |
What the filing says about the workforce: Approximately 7,100 hourly (74%) and 2,500 salaried employees; about 1,200 hourly employees (13%) represented by labor unions, 59% of the Specialties segment's hourly employees; an employee stock purchase plan launched in 2025.
Companies read with the same leading pattern
Other companies whose largest staffing pattern is also Nonmetallic Mineral Mining and Quarrying, largest first, each read from its own annual report. Within reach now and at the end of 2028, long-run pace, four in five.
- The Mosaic Company (MOS, 13,249 employees)19% now, 29% by 2028
- Vulcan Materials Company (VMC, 11,548 employees)16% now, 24% by 2028
What the filing says about AI
2 sentences in the filing name AI. The filing names threat actors' reported use of AI to increase the virulence of cyber attacks; nothing on its own use.
- “Cyber threats are rapidly evolving as threat actors have become increasingly sophisticated and carry out direct large-scale, complex attacks against a company and are reportedly using artificial intelligence to increase the virulence of attacks.”
- “These forward-looking statements are subject to risks and uncertainties, and are based on assumptions that may be materially different from actual results, and include, but are not limited to: The Company's ability to address challenges, including shipment declines caused by economic and weather events beyond its control; A widespread decline in aggregates pricing, including reduced shipment vo...”
Its annual reports, year by year
Sentences naming AI in each annual report, counted by one rule, beside the median report in the Index that year. Each count links its filing. Every company, by year and sector
- Fiscal 20210median 0
- Fiscal 20220median 0
- Fiscal 20230median 1
- Fiscal 20242median 4
- Fiscal 20252median 10
Headcount by filing year
As reported in each year's annual report, with the filing. A year marked not read had no figure the reading could take from the report's text.
| Period | Employees | Filed | Filing |
|---|---|---|---|
| 2025-12-31 | 9,600 | 2026-02-19 | 10-K |
| 2024-12-31 | 9,400 | 2025-02-21 | 10-K |
| 2023-12-31 | 9,400 | 2024-02-23 | 10-K |
| 2022-12-31 | 9,400 | 2023-02-24 | 10-K |
| 2021-12-31 | 10,000 | 2022-02-22 | 10-K |
| 2020-12-31 | 8,700 | 2021-02-19 | 10-K |
| 2019-12-31 | 8,846 | 2020-02-21 | 10-K |
| 2018-12-31 | 8,714 | 2019-02-25 | 10-K |
| 2017-12-31 | 8,406 | 2018-02-23 | 10-K |
| 2016-12-31 | 8,111 | 2017-02-24 | 10-K |
| 2015-12-31 | 7,300 | 2016-02-23 | 10-K |
| 2014-12-31 | 7,193 | 2015-02-24 | 10-K |
| 2013-12-31 | 5,036 | 2014-02-24 | 10-K |
| 2012-12-31 | 4,948 | 2013-02-22 | 10-K |
| 2011-12-31 | 4,993 | 2012-02-29 | 10-K |
| 2010-12-31 | 4,471 | 2011-02-25 | 10-K |
| 2009-12-31 | 4,554 | 2010-02-26 | 10-K |
| 2008-12-31 | 4,860 | 2009-02-17 | 10-K |
| 2007-12-31 | 5,255 | 2008-02-25 | 10-K |
| 2006-12-31 | 5,500 | 2007-02-28 | 10-K |
| 2005-12-31 | 5,754 | 2006-02-27 | 10-K |
| 2004-12-31 | 5,778 | 2005-02-25 | 10-K |
| 2003-12-31 | 5,900 | 2004-03-15 | 10-K |
| 2002-12-31 | 6,400 | 2003-03-27 | 10-K |
| 2001-12-31 | 6,900 | 2002-03-27 | 10-K405 |
| 2000-12-31 | 6,000 | 2001-03-22 | 10-K405 |
| 1999-12-31 | 6,100 | 2000-03-27 | 10-K405 |
| 1998-12-31 | 5,700 | 1999-03-24 | 10-K405 |
| 1997-12-31 | 5,000 | 1998-03-30 | 10-K405 |
| 1996-12-31 | 4,000 | 1997-03-25 | 10-K405 |
Limits of this reading
- No count by segment: the shares are by revenue and description (c).
- The U.S. share is not stated.
Source: the company's annual report on EDGAR, accession 0001193125-26-059193, the filing. Read by Claude Fable 5.1 under rubric version 1, by the method. A company can write to info@stratussc.com to have its reading checked against its filing.
The report on Martin Marietta Materials, Inc., $29
This page as a document to keep, with what it does not show: the share within reach at every date on three paces and two reliabilities, a typical workforce of this shape at the stated headcount role by role and task by task (the industries' staffing, never the company's roster), where to start, what changes for the people and what they would learn, every sentence in the filing that names AI, the headcount by year, the companies read with the same leading pattern, the method and a citation line. To print or save as a PDF, open again in your browser for a year.
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Questions about this company
- How much of Martin Marietta Materials, Inc.'s working time is within reach of AI?
- An estimated 15% now and 22% by the end of 2028, on METR's long-run pace at four in five, from the workforce Martin Marietta Materials, Inc.'s own annual report describes and BLS staffing patterns for its industries, never from a roster. It is an estimate with a stated method. It is not a forecast of jobs lost or of savings, and it says nothing about what the company will do.
- How many people does Martin Marietta Materials, Inc. employ?
- 9,600 as of January 31, 2026, as its annual report for the period ending December 31, 2025 states.
- What kinds of work make up Martin Marietta Materials, Inc.'s workforce?
- Read from its annual report as a blend of 2 industry staffing patterns, the largest Nonmetallic Mineral Mining and Quarrying; by those patterns the work is about 22% desk work, 9% people work and 69% body work. Each share has a one-sentence reason on this page that can be checked against the filing.
- What does Martin Marietta Materials, Inc.'s annual report say about AI?
- 2 sentences in the filing name AI. Its annual reports for fiscal 2021 to 2025 name it in 0, 0, 0, 2 and 2 sentences, year by year. They are counted and quoted on this page, never judged: a count says how much a filing talks about AI, not what the company does with it.
- How is this estimated?
- Claude Fable 5.1 read the annual report under the Index's written rubric (version 1) on October 19, 2026: the stated headcount, the share in the U.S. when stated, and the workforce as a blend of industry staffing patterns. The estimates are the site's industry estimates weighted by those shares, from O*NET tasks with estimated lengths and METR's measurements of how long a task AI models can finish. A company can write to info@stratussc.com to have its reading checked against its filing.
Embed these figures on your site
A small card with the share of working time within reach now and at the end of 2027, 2028 and 2030, the date and a link back. Free under CC BY 4.0; the card carries the credit.