MLM
Martin Marietta Materials, Inc.
NYSE · Basic Materials · Construction Materials · US
$514.77
+1.15%0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
-11.0%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Sep 2, 2026 | WAJSGRAS DAVID C · director | A-Award | 78 | $519 |
| Sep 2, 2026 | LYONS MARTIN J · director | A-Award | 68 | $519 |
| Sep 2, 2026 | Petro Michael J · officer: SVP and CFO | A-Award | 9,331 | $0.00 |
| Sep 2, 2026 | Pike Thomas · director | A-Award | 66 | $519 |
| Aug 25, 2026 | Niemann Philipp · director | A-Award | 337 | $0.00 |
| Aug 4, 2026 | Petro Michael J · officer: SVP and CFO | F-InKind | 368 | $542 |
| Jun 2, 2026 | LYONS MARTIN J · director | A-Award | 61 | $582 |
| Jun 2, 2026 | WAJSGRAS DAVID C · director | A-Award | 69 | $582 |
| Jun 2, 2026 | Pike Thomas · director | A-Award | 59 | $582 |
| May 18, 2026 | LYONS MARTIN J · director | A-Award | 313 | $0.00 |
| May 18, 2026 | Foxx Anthony R · director | A-Award | 313 | $0.00 |
| May 18, 2026 | SLAGER DONALD W · director | A-Award | 313 | $0.00 |
| May 18, 2026 | Ables Dorothy M · director | A-Award | 313 | $0.00 |
| May 18, 2026 | Mack Mary T · director | A-Award | 313 | $0.00 |
| May 18, 2026 | DELLY GAYLA J · director | A-Award | 313 | $0.00 |
| May 18, 2026 | WAJSGRAS DAVID C · director | A-Award | 313 | $0.00 |
| May 18, 2026 | Pike Thomas · director | A-Award | 313 | $0.00 |
| May 18, 2026 | PEREZ LAREE E · director | A-Award | 313 | $0.00 |
| May 5, 2026 | Samborski Christopher William · officer: EVP, COO | A-Award | 8,101 | $0.00 |
| Mar 2, 2026 | KORALESKI JOHN J · director | A-Award | 69 | $677 |
| Mar 2, 2026 | Pike Thomas · director | A-Award | 47 | $677 |
| Mar 2, 2026 | WAJSGRAS DAVID C · director | A-Award | 56 | $677 |
| Feb 25, 2026 | Cardin Robert J · officer: SVP, Controller & CAO | F-InKind | 209 | $684 |
| Feb 25, 2026 | Flynn Jason Paul · officer: SVP and CIO | F-InKind | 30 | $697 |
| Feb 25, 2026 | Petro Michael J · officer: SVP and CFO | F-InKind | 94 | $697 |
| Feb 25, 2026 | Flynn Jason Paul · officer: SVP and CIO | F-InKind | 177 | $684 |
| Feb 25, 2026 | Petro Michael J · officer: SVP and CFO | F-InKind | 211 | $684 |
| Feb 25, 2026 | Nye C Howard · director, officer: Chairman, Pres & CEO | F-InKind | 1,805 | $684 |
| Feb 25, 2026 | Nye C Howard · director, officer: Chairman, Pres & CEO | F-InKind | 1,221 | $697 |
| Feb 25, 2026 | McCunniff Donald A. · officer: EVP and CHRO | F-InKind | 192 | $684 |
Institutional positioning
13F filings over the trailing two quarters
New 214Increased 729Reduced 779Sold out 106
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 4,692,446 | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 4,685,757 | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 3,929,705 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 3,917,383 | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3,197,395 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 3,160,444 | May 8, 2026 |
| STATE STREET CORP | Increased | 3,159,639 | Aug 7, 2026 |
| STATE STREET CORP | Increased | 2,877,568 | May 15, 2026 |
| FMR LLC | Reduced | 2,607,979 | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 2,446,762 | Aug 14, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 2,399,779 | May 18, 2026 |
| FMR LLC | Reduced | 2,192,603 | Aug 13, 2026 |
| PRINCIPAL FINANCIAL GROUP INC | Increased | 2,116,369 | Aug 4, 2026 |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 2,093,942 | May 4, 2026 |
| ARISTOTLE CAPITAL MANAGEMENT, LLC | Reduced | 1,955,100 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Sep 2, 2026