MetaCap

Martin Marietta Materials Insider Trades

NYSE: MLMIndustrialsMining & Quarrying of Nonmetallic Minerals (No Fuels)USD

478.35-3.22 (-0.67%)

At close: Oct 9, 4:01 PM ET · Delayed 15 min

After hours: 478.35 +0.04%

Last 12 months

Purchases
0 · $0
Sales
0 · $0
Shares bought / sold
0 / 0
Net activity
Net buying $0

Martin Marietta Materials insider activity

Over the last 12 months, Martin Marietta Materials insiders reported 50 transactions on SEC Form 4: 0 open-market purchases and 0 sales. The most recent filing shows Petro Michael J (SVP and CFO) reporting a transaction in 9,331 shares on Sep 1, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put MLM's ownership changes in context.

Summary generated from market data by MetaCap's automated system. Methodology

MLM insider transactions

Martin Marietta Materials insider transactions
DateInsiderTypeSharesValueFiling
Sep 1, 2026Petro Michael JSVP and CFOAward9,331—Form 4
Aug 31, 2026LYONS MARTIN JDirectorAward68$35.27KForm 4
Aug 31, 2026Pike ThomasDirectorAward66$34.23KForm 4
Aug 31, 2026WAJSGRAS DAVID CDirectorAward78$40.46KForm 4
Aug 21, 2026Niemann PhilippDirectorAward337—Form 4
Aug 3, 2026Petro Michael JSVP and CFOTax withholding368$199.56KForm 4
May 29, 2026Pike ThomasDirectorAward59$34.32KForm 4
May 29, 2026LYONS MARTIN JDirectorAward61$35.48KForm 4
May 29, 2026WAJSGRAS DAVID CDirectorAward69$40.13KForm 4
May 14, 2026DELLY GAYLA JDirectorAward313—Form 4
May 14, 2026LYONS MARTIN JDirectorAward313—Form 4
May 14, 2026Mack Mary TDirectorAward313—Form 4
May 14, 2026Ables Dorothy MDirectorAward313—Form 4
May 14, 2026PEREZ LAREE EDirectorAward313—Form 4
May 14, 2026Foxx Anthony RDirectorAward313—Form 4
May 14, 2026Pike ThomasDirectorAward313—Form 4
May 14, 2026SLAGER DONALD WDirectorAward313—Form 4
May 14, 2026WAJSGRAS DAVID CDirectorAward313—Form 4
May 1, 2026Samborski Christopher WilliamEVP, COOAward8,101—Form 4
Mar 1, 2026McCunniff Donald A.EVP and CHROAward2,960—Form 4
Mar 1, 2026Nye C HowardChairman, Pres & CEOAward5,919—Form 4
Mar 1, 2026Petro Michael JSVP and CFOAward2,960—Form 4
Mar 1, 2026Schoen George FrederickEVP, GC and Corp. SecretaryAward23,673—Form 4
Feb 27, 2026KORALESKI JOHN JDirectorAward69$46.68KForm 4
Feb 27, 2026Pike ThomasDirectorAward47$31.80KForm 4
Feb 27, 2026WAJSGRAS DAVID CDirectorAward56$37.89KForm 4
Feb 24, 2026Flynn Jason PaulSVP and CIOTax withholding30$20.91KForm 4
Feb 24, 2026Petro Michael JSVP and CFOTax withholding94$65.50KForm 4
Feb 24, 2026Cardin Robert JSVP, Controller & CAOTax withholding103$71.78KForm 4
Feb 24, 2026Nye C HowardChairman, Pres & CEOTax withholding1,221$850.85KForm 4
Feb 23, 2026Flynn Jason PaulSVP and CIOTax withholding177$121.00KForm 4
Feb 23, 2026Petro Michael JSVP and CFOTax withholding211$144.24KForm 4
Feb 23, 2026Cardin Robert JSVP, Controller & CAOTax withholding209$142.87KForm 4
Feb 23, 2026McCunniff Donald A.EVP and CHROTax withholding192$131.25KForm 4
Feb 23, 2026Nye C HowardChairman, Pres & CEOTax withholding1,805$1.23MForm 4
Feb 20, 2026Flynn Jason PaulSVP and CIOAward595—Form 4
Feb 20, 2026Flynn Jason PaulSVP and CIOAward592$324.86KForm 4
Feb 20, 2026Cardin Robert JSVP, Controller & CAOAward658—Form 4
Feb 20, 2026McCunniff Donald A.EVP and CHROAward1,277—Form 4
Feb 20, 2026Nye C HowardChairman, Pres & CEOAward6,405—Form 4
Feb 20, 2026Nye C HowardChairman, Pres & CEOAward2,216$1.22MForm 4
Feb 20, 2026Petro Michael JSVP and CFOAward931—Form 4
Feb 17, 2026Nye C HowardChairman, Pres & CEOTax withholding9,717$6.48MForm 4
Feb 17, 2026Nye C HowardChairman, Pres & CEOAward22,365—Form 4
Feb 17, 2026Cardin Robert JSVP, Controller & CAOTax withholding822$547.89KForm 4
Feb 17, 2026Cardin Robert JSVP, Controller & CAOAward1,869—Form 4
Feb 17, 2026Flynn Jason PaulSVP and CIOTax withholding107$71.32KForm 4
Feb 17, 2026Flynn Jason PaulSVP and CIOAward222—Form 4
Feb 17, 2026Petro Michael JSVP and CFOTax withholding758$505.23KForm 4
Feb 17, 2026Petro Michael JSVP and CFOAward1,724—Form 4

Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4

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