Martin Marietta Materials Inc
A building-materials maker whose crushed stone, sand, gravel, and cement go into highways, homes, and airports across the U.S., Canada, and the Bahamas. Its name traces to a 1961 merger between aerospace pioneer Glenn L. Martin and the American-Marietta Corporation, while its quarries trace back to a 1939 stone company founded by two brothers in Raleigh, North Carolina. The company was spun off in the 1990s from the aerospace giant that later became Lockheed Martin.
Granted 183.0K · Sold 20.0K
Granted 29.7K · Sold 10.0K
Granted 25.0K
Granted 1.4K · Sold 3.4K
Granted 1.3K
Granted 1.7K · Sold 1.0K
Granted 3.3K
Granted 16.2K · Bought 550
Granted 6.6K · Sold 0.45
Granted 8.1K
Granted 13.7K
Granted 6.9K · Sold 2.4K
Granted 7.1K · Sold 1.3K
Granted 1.4K
Granted 1.1K
Granted 2.7K
Granted 1.7K
Granted 3.3K
Granted 3.1K
Granted 1.3K
Granted 1.7K
Granted 981
Granted 1.7K
Granted 914
Granted 374
Granted 337
Granted 313
Granted 23.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Nye C HowardChairman, Pres & CEO, Director · 35 transactions | +37.2% | 246.4K | 183.0K | — | 20.0K |
| Bar Roselyn RExecutive Vice President · 33 transactions | +8.2% | 62.6K | 29.7K | — | 10.0K |
| Nickolas James AJEVP and CFO · 20 transactions | +72.3% | 26.6Kas of Feb 2025 | 25.0K | — | — |
| Cole Sue WDirector · 7 transactions | -7.5% | 24.6Kas of May 2025 | 1.4K | — | 3.4K |
| Quillen Michael JDirector · 14 transactions | -1.8% | 21.3Kas of May 2024 | 1.3K | — | — |
| Perez Laree EDirector · 7 transactions | +2.9% | 15.7K | 1.7K | — | 1.0K |
| Koraleski John JDirector · 23 transactions | — | 15.7K | 3.3K | — | — |
| Petro Michael JSVP and CFO · 27 transactions | +521.9% | 15.4K | 16.2K | 550 | — |
| Mohr John PSVP - CIO · 13 transactions | +8.9% | 15.0Kas of Dec 2023 | 6.6K | — | 0.45 |
| Samborski Christopher WilliamEVP, COO · 1 transaction | — | 13.7K | 8.1K | — | — |
| Cardin Robert JSVP, Controller & CAO · 26 transactions | +136.5% | 12.5K | 13.7K | — | — |
| LaTorre Craig MSr. VP, CHRO · 15 transactions | -13.3% | 8.6Kas of Dec 2023 | 6.9K | — | 2.4K |
| McCunniff Donald A.EVP and CHRO · 7 transactions | -53% | 7.5K | 7.1K | — | 1.3K |
| Flynn Jason PaulSVP and CIO · 7 transactions | — | 5.5K | 1.4K | — | — |
| Davis Smith WDirector · 8 transactions | +26.2% | 5.3Kas of Feb 2023 | 1.1K | — | — |
| Brooks Oliver WSVP - Enterprise Excellence · 11 transactions | — | 5.2Kas of Feb 2025 | 2.7K | — | — |
| Slager Donald WDirector · 5 transactions | +51.4% | 5.1K | 1.7K | — | — |
| Wajsgras David CDirector · 25 transactions | +183.6% | 5.0K | 3.3K | — | — |
| Pike ThomasDirector · 25 transactions | +160% | 5.0K | 3.1K | — | — |
| Bennett Kelly GeanSVP, CHRO · 5 transactions | — | 4.5Kas of Feb 2024 | 1.3K | — | — |
| Ables Dorothy MDirector · 5 transactions | +68.7% | 4.2K | 1.7K | — | — |
| Kohn Bradley DSVP, General Counsel and Secy · 1 transaction | — | 2.6Kas of Feb 2025 | 981 | — | — |
| Foxx Anthony RDirector · 5 transactions | +191.9% | 2.6K | 1.7K | — | — |
| Mack Mary TDirector · 3 transactions | — | 914 | 914 | — | — |
| Lyons Martin JDirector · 2 transactions | — | 374 | 374 | — | — |
| Niemann PhilippDirector · 1 transaction | — | 337 | 337 | — | — |
| Delly Gayla JDirector · 1 transaction | — | 0 | 313 | — | — |
| Schoen George FrederickEVP, GC and Corp. Secretary · 1 transaction | — | 0 | 23.7K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -37.7K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.