MARTIN MARIETTA MATERIALS INC (MLM) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-06-02

MARTIN MARIETTA MATERIALS INC (MLM) has filed 13 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-02. 6 Form 8-K material event filings were reported by MLM in the last 90 days. InsiderAlpha tracks every MLM SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About MARTIN MARIETTA MATERIALS INC (MLM)

SEC CIK0000916076

90-Day SEC Filing Activity

Form 4 filings (90d)13
Form 8-K filings (90d)6
Latest Form 4 filing2026-06-02

Recent MLM Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
Pike ThomasDirectorA — Grant or award59$581.64$34KSEC
LYONS MARTIN JDirectorA — Grant or award61$581.64$35KSEC
WAJSGRAS DAVID CDirectorA — Grant or award69$581.64$40KSEC
DELLY GAYLA JDirectorA — Grant or award313$0.00—SEC
PEREZ LAREE EDirectorA — Grant or award313$0.00—SEC
Pike ThomasDirectorA — Grant or award313$0.00—SEC
LYONS MARTIN JDirectorA — Grant or award313$0.00—SEC
Foxx Anthony RDirectorA — Grant or award313$0.00—SEC
WAJSGRAS DAVID CDirectorA — Grant or award313$0.00—SEC
Mack Mary TDirectorA — Grant or award313$0.00—SEC
SLAGER DONALD WDirectorA — Grant or award313$0.00—SEC
Ables Dorothy MDirectorA — Grant or award313$0.00—SEC
Samborski Christopher WilliamEVP, COOA — Grant or award8.1K$0.00—SEC
Nye C HowardChairman, Pres & CEOA — Grant or award5.9K$0.00—SEC
Petro Michael JSVP and CFOA — Grant or award3.0K$0.00—SEC

All transactions sourced from SEC EDGAR Form 4 filings for MARTIN MARIETTA MATERIALS INC (MLM). Updated in real time as new filings are submitted to the SEC.

Most-Active MLM Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
WAJSGRAS DAVID C2$40K
Pike Thomas2$34K
LYONS MARTIN J2$35K
PEREZ LAREE E1—
Foxx Anthony R1—

Recent MLM Form 8-K Material Events

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in MLM insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

MLM Insider Trading — FAQ

What is the latest insider trade for MLM?
MARTIN MARIETTA MATERIALS INC (MLM) had 13 insider filings in the last 90 days, with the most recent on 2026-06-02. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying MLM stock?
0 insider purchases of MLM were filed in the last 90 days.
How many insiders are selling MLM stock?
0 insider sales of MLM were filed in the last 90 days.
Where can I see MLM SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every MLM SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live MLM dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.