MARTIN MARIETTA MATERIALS INC insider trading

MLMNYSE

$482.27+3.10 (+0.65%)as of Oct 2, 2026

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-23.2%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Open market purchase

Open market sell

Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

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Key players

NCNye C. HowardChairman, Pres & CEO0.4103%of company
RRRoselyn R. BarExecutive Vice President0.1042%of company
JAJames Aj NickolasEVP and CFO0.0444%of company
SWSue W. ColeDirector0.041%of company
MJMichael J. PetroSVP and CFO0.0405%of company
GFGeorge Frederick SchoenEVP, GC and Corp. Secretary0.0394%of company
CWChristopher William SamborskiEVP, COO0.0362%of company
LELaree E. PerezDirector0.0262%of company
JJJohn J. KoraleskiDirector0.0262%of company
RJRobert J. CardinSVP, Controller & CAO0.0207%of company

AI Activity Analysis

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Insider activity

Fromto

Company	Insider / role	Action	ΔOwn	Avg price	Amount
No qualifying insider activity was found for the selected filters.

End of history · 0 transactions