Company · CIK 0000916076 · SIC 1400 — Mining & Quarrying of Nonmetallic Minerals (No Fuels) · NYSE
MARTIN MARIETTA MATERIALS INC · MLM
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026 AForm 4 → | Sep 2, 5:19 pm EDT | Michael J PetroSVP and CFO | 9,331 | — | — | 24,322 | — | |
| Aug 31, 2026 AForm 4 → | Sep 2, 4:35 pm EDT | David C WajsgrasDirector | 78 | $518.70 | $40,459 | 5,106 | — | |
| Aug 31, 2026 AForm 4 → | Sep 2, 4:31 pm EDT | Thomas PikeDirector | 66 | $518.70 | $34,234 | 5,029 | — | |
| Aug 31, 2026 AForm 4 → | Sep 2, 4:29 pm EDT | Martin J LyonsDirector | 68 | $518.70 | $35,272 | 442 | — |
Reported at this company — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.