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.
Bought 350.0K
Bought 316.1K
Bought 643.4K
Sold 672.2K
Granted 595.5K · Sold 138.1K
Granted 213.3K · Sold 106.9K
Granted 193.6K · Sold 152.4K
Granted 141.6K · Sold 59.0K
Granted 51.2K · Sold 15.9K
Granted 98.5K · Sold 75.5K
Granted 71.4K · Sold 51.9K
Granted 44.7K
Granted 44.0K · Sold 35.6K
Granted 42.0K · Sold 21.9K
Granted 78.6K · Sold 57.0K
Granted 32.5K · Sold 8.8K
Granted 26.0K · Sold 3.0K
Granted 36.4K · Sold 17.5K
Granted 28.8K · Bought 86.86 · Sold 1.0K
Granted 30.0K · Sold 12.8K
Granted 42.4K · Sold 25.5K
Granted 32.0K · Sold 15.0K
Granted 34.6K · Sold 19.6K
Granted 29.4K · Sold 13.9K
Granted 8.8K · Bought 6.9K
Granted 16.2K · Bought 550
Granted 22.2K · Bought 3.6 · Sold 0.45
Granted 8.1K
Granted 15.4K
Granted 9.9K · Sold 5.5K
Granted 10.3K · Sold 2.4K
Granted 41.2K · Sold 17.6K
Granted 12.4K · Sold 10.5K
Granted 1.4K
Granted 5.3K
Granted 2.7K
Granted 5.1K
Granted 5.0K
Granted 5.0K
Granted 821.6K · Bought 44.5K · Sold 700.7K
Granted 1.3K
Granted 4.2K
Granted 848
Granted 981
Granted 2.6K
Granted 914
Granted 374
Granted 337
Sold 74.6K
Granted 313
Granted 23.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| McDermott Edward H +4 co-filers10% owner, Director, 10% owner · 6 transactions | — | 14.81Mas of Oct 2008 | — | 350.0K | — |
| Elizabeth R. & William J. Patterson Foundation +6 co-filers10% owner · 4 transactions | — | 14.79Mas of Oct 2008 | — | 316.1K | — |
| McDermott Edward H +8 co-filers10% owner, Director, 10% owner · 5 transactions | — | 13.71Mas of Oct 2008 | — | 643.4K | — |
| McDermott Edward H +7 co-filers10% owner · 3 transactions | — | 4.71Mas of Aug 2011 | — | — | 672.2K |
| NNS Holding +2 co-filers10% owner · 2 transactions | — | 3.70Mas of Dec 2007 | — | — | — |
| Nye C HowardChairman, Pres & CEO, Director · 150 transactions | — | 246.4K | 595.5K | — | 138.1K |
| Bar Roselyn RExecutive Vice President · 176 transactions | — | 62.6K | 213.3K | — | 106.9K |
| Sipling Philip JExec. VP · 39 transactions | — | 60.6Kas of Dec 2009 | 193.6K | — | 152.4K |
| Lloyd Anne HEVP and CFO · 90 transactions | — | 59.8Kas of May 2017 | 141.6K | — | 59.0K |
| Shepherd Daniel GExec VP · 34 transactions | — | 47.5Kas of May 2011 | 51.2K | — | 15.9K |
| Stewart Jonathan TSVP Human Resources · 66 transactions | — | 40.1Kas of Dec 2010 | 98.5K | — | 75.5K |
| Moe Donald MSr. VP · 34 transactions | — | 38.7Kas of Feb 2007 | 71.4K | — | 51.9K |
| Nickolas James AJEVP and CFO · 37 transactions | — | 26.6Kas of Feb 2025 | 44.7K | — | — |
| Henry Janice KSr. Vice Pres. · 18 transactions | — | 25.8Kas of Jun 2006 | 44.0K | — | 35.6K |
| Cole Sue WDirector · 109 transactions | — | 24.6Kas of May 2025 | 42.0K | — | 21.9K |
| Vaio Bruce AExecutive VP · 48 transactions | — | 22.3Kas of Dec 2012 | 78.6K | — | 57.0K |
| Guzzo Dana F.SVP/Controller/CAO · 77 transactions | — | 22.0Kas of Feb 2019 | 32.5K | — | 8.8K |
| Quillen Michael JDirector · 91 transactions | — | 21.3Kas of May 2024 | 26.0K | — | 3.0K |
| Menaker Frank H JrDirector · 85 transactions | — | 20.6Kas of Mar 2016 | 36.4K | — | 17.5K |
| Grant Daniel L.SVP - Strategy and Development · 59 transactions | — | 19.1Kas of Feb 2021 | 28.8K | 86.86 | 1.0K |
| Maffucci David GDirector · 81 transactions | — | 17.9Kas of May 2018 | 30.0K | — | 12.8K |
| McDonald William EDirector · 87 transactions | — | 17.9Kas of Feb 2017 | 42.4K | — | 25.5K |
| Rediker Dennis LDirector · 88 transactions | — | 17.8Kas of Feb 2019 | 32.0K | — | 15.0K |
| Vinroot Richard ADirector · 96 transactions | — | 16.0Kas of Feb 2016 | 34.6K | — | 19.6K |
| Perez Laree EDirector · 86 transactions | — | 15.7K | 29.4K | — | 13.9K |
| Koraleski John JDirector · 51 transactions | — | 15.7K | 8.8K | 6.9K | — |
| Petro Michael JSVP and CFO · 27 transactions | — | 15.4K | 16.2K | 550 | — |
| Mohr John PSVP - CIO · 47 transactions | — | 15.0Kas of Dec 2023 | 22.2K | 3.6 | 0.45 |
| Samborski Christopher WilliamEVP, COO · 1 transaction | — | 13.7K | 8.1K | — | — |
| Cardin Robert JSVP, Controller & CAO · 31 transactions | — | 12.5K | 15.4K | — | — |
| Watterson David SVP and Chief Info. Officer · 6 transactions | — | 12.2Kas of Aug 2006 | 9.9K | — | 5.5K |
| LaTorre Craig MSr. VP, CHRO · 23 transactions | — | 8.6Kas of Dec 2023 | 10.3K | — | 2.4K |
| McCunniff Donald A.EVP and CHRO · 56 transactions | — | 7.5K | 41.2K | — | 17.6K |
| Bennett Marcus CDirector · 20 transactions | — | 7.0Kas of May 2008 | 12.4K | — | 10.5K |
| Flynn Jason PaulSVP and CIO · 7 transactions | — | 5.5K | 1.4K | — | — |
| Davis Smith WDirector · 25 transactions | — | 5.3Kas of Feb 2023 | 5.3K | — | — |
| Brooks Oliver WSVP - Enterprise Excellence · 11 transactions | — | 5.2Kas of Feb 2025 | 2.7K | — | — |
| Slager Donald WDirector · 11 transactions | — | 5.1K | 5.1K | — | — |
| Wajsgras David CDirector · 32 transactions | — | 5.0K | 5.0K | — | — |
| Pike ThomasDirector · 30 transactions | — | 5.0K | 5.0K | — | — |
| Zelnak Stephen P JrDirector · 279 transactions | — | 5.0Kas of Jun 2020 | 821.6K | 44.5K | 700.7K |
| Bennett Kelly GeanSVP, CHRO · 5 transactions | — | 4.5Kas of Feb 2024 | 1.3K | — | — |
| Ables Dorothy MDirector · 9 transactions | — | 4.2K | 4.2K | — | — |
| Sansom William BDirector · 4 transactions | — | 4.1Kas of Jul 2006 | 848 | — | — |
| Kohn Bradley DSVP, General Counsel and Secy · 1 transaction | — | 2.6Kas of Feb 2025 | 981 | — | — |
| Foxx Anthony RDirector · 7 transactions | — | 2.6K | 2.6K | — | — |
| Mack Mary TDirector · 3 transactions | — | 914 | 914 | — | — |
| Lyons Martin JDirector · 2 transactions | — | 374 | 374 | — | — |
| Niemann PhilippDirector · 1 transaction | — | 337 | 337 | — | — |
| Phoebe Snow FoundationSee Footnote 1 · 5 transactions | — | 0as of Dec 2009 | — | — | 74.6K |
| Cranberry Lake Partners LP +1 co-filer10% owner · 2 transactions | — | 0as of Nov 2010 | — | — | — |
| Delly Gayla JDirector · 1 transaction | — | 0 | 313 | — | — |
| McDermott Edward H10% owner · 1 transaction | — | 0as of Nov 2010 | — | — | — |
| 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 all recorded history: -953.2K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.