MARTIN MARIETTA MATERIALS INC (MLM)
Data as of , from SEC Form 4 filings.
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- Michael J. Petro - OfficerGrant or award9,331 sh
David C. Wajsgras - DirectorGrant or award
About MARTIN MARIETTA MATERIALS INC (MLM)
MARTIN MARIETTA MATERIALS INC is an SEC registrant, filing under CIK 0000916076, classified as mining and quarrying of nonmetallic minerals (no fuels). We track it alongside the rest of the Materials sector.
MLM Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Grant or award | 5 | 9,880 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
MLM insider transactions (Form 4)
3369 Form 4 filings on record, the earliest from Dec 3, 2024, newest first. Filing history page 1 of 3.
| Traded | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Michael J. Petro - Officer | Grant or award | Common Stock | 9,331 footnote F1 | $0.00 | - | |
| ||||||
| David C. Wajsgras - Director | Grant or award | Common Stock | 78 footnote F1 | $518.70 | $40K | |
| ||||||
| Thomas Pike - Director | Grant or award | Common Stock | 66 footnote F1 | $518.70 | $34K | |
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| Martin J. Lyons - Director | Grant or award | Common Stock | 68 footnote F1 | $518.70 | $35K | |
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| Philipp Niemann - Director | Grant or award | Common Stock | 337 | $0.00 | - | |
| Michael J. Petro - Officer | Tax withholding / forfeiture | Common Stock | 368 | $542.27 | $200K | |
| David C. Wajsgras - Director | Grant or award | Common Stock | 69 footnote F1 | $581.64 | $40K | |
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| Thomas Pike - Director | Grant or award | Common Stock | 59 footnote F1 | $581.64 | $34K | |
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| Martin J. Lyons - Director | Grant or award | Common Stock | 61 footnote F1 | $581.64 | $35K | |
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| David C. Wajsgras - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
| Donald W. Slager - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
| Thomas Pike - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
| Laree E. Perez - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
| Mary T. Mack - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
| Martin J. Lyons - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
 Anthony R. Foxx - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
 Gayla J. Delly - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
 Dorothy M. Ables - Director | Grant or award | Common Stock | 313 | $0.00 | - | |
 Christopher William Samborski - Officer | Grant or award | Common Stock | 8,101 footnote F1 | $0.00 | - | |
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| George Frederick Schoen - Officer | Grant or award | Common Stock | 23,673 footnote F1 | $0.00 | - | |
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| Michael J. Petro - Officer | Grant or award | Common Stock | 2,960 footnote F1 | $0.00 | - | |
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 C. Howard Nye - Officer | Grant or award | Common Stock | 5,919 footnote F1 | $0.00 | - | |
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| Donald A. McCunniff - Officer | Grant or award | Common Stock | 2,960 footnote F1 | $0.00 | - | |
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| David C. Wajsgras - Director | Grant or award | Common Stock | 56 footnote F1 | $676.57 | $38K | |
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| Thomas Pike - Director | Grant or award | Common Stock | 47 footnote F1 | $676.57 | $32K | |
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 John J. Koraleski - Director | Grant or award | Common Stock | 69 footnote F1 | $676.57 | $47K | |
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| Michael J. Petro - Officer | Tax withholding / forfeiture | Common Stock | 211 | $683.60 | $144K | |
| Michael J. Petro - Officer | Tax withholding / forfeiture | Common Stock | 94 | $696.85 | $66K | |
| C. Howard Nye - Officer | Tax withholding / forfeiture | Common Stock | 1,805 | $683.60 | $1.23M | |
| C. Howard Nye - Officer | Tax withholding / forfeiture | Common Stock | 1,221 | $696.85 | $851K | |
| Donald A. McCunniff - Officer | Tax withholding / forfeiture | Common Stock | 192 | $683.60 | $131K | |
| Jason Paul Flynn - Officer | Tax withholding / forfeiture | Common Stock | 177 | $683.60 | $121K | |
| Jason Paul Flynn - Officer | Tax withholding / forfeiture | Common Stock | 30 | $696.85 | $21K | |
Item 1.01, 9.01
Item 1.01, 2.01, 3.02, 5.02, 7.01, 9.01
Item 1.01, 1.02, 2.03, 9.01
Item 1.01, 2.03, 8.01, 9.01
Stock trades in MLM disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.
| Member | Type | Traded | Disclosed | Value range | Owner | Days to disclose | Filing |
|---|---|---|---|---|---|---|---|
 April McClain DelaneyDemocrat, MD-06 | Purchase |
MLM insider trading FAQ
What is the latest insider trade for MLM?
MARTIN MARIETTA MATERIALS INC (MLM) had 5 insider filings in the last 90 days, with the most recent on 2 September 2026. The full record for MLM runs to 69 Form 4 filings, the earliest from 3 December 2024. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying MLM stock?
No insider purchases of MLM were filed in the last 90 days.
How many insiders are selling MLM stock?
No insider sales of MLM were filed in the last 90 days. 1 sale is on record for this company.
Where can I see MLM SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects MLM Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Materials companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Michael J. Petro view on EDGAR
- - David C. Wajsgras view on EDGAR
- - Thomas Pike view on EDGAR
- - Martin J. Lyons view on EDGAR
- - Philipp Niemann view on EDGAR
- - Michael J. Petro view on EDGAR
- - David C. Wajsgras view on EDGAR
- - Thomas Pike view on EDGAR
- - Martin J. Lyons view on EDGAR
Related companies with recent insider activity
Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Insider activity in Materials
- Where MLM's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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