NYSE: MLM
Martin Marietta Materials Inc Stock Ownership - Who owns Martin Marietta Materials?

Insider buying vs selling

Have Martin Marietta Materials Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Roselyn R. BarExecutive Vice President2025-12-01420$615.25
$258.41kSell
Jason Paul FlynnSVP and CIO2025-12-01123$615.25
$75.68kSell
John J. KoraleskiDirector2025-11-2875$623.24
$46.74kBuy
David C. WajsgrasDirector2025-11-2861$623.24
$38.02kBuy
Thomas PikeDirector2025-11-2851$623.24
$31.79kBuy
Thomas PikeDirector2025-08-2951$616.40
$31.44kBuy
John J. KoraleskiDirector2025-08-2976$616.40
$46.85kBuy
David C. WajsgrasDirector2025-08-2961$616.40
$37.60kBuy
Laree E. PerezDirector2025-08-081,038$613.32
$636.63kSell
Thomas PikeDirector2025-05-3058$547.55
$31.76kBuy

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Net Insider Buy/Sell (L12M) Ownership

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MLM Shareholders

What type of owners hold Martin Marietta Materials Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Vanguard Group Inc12.34%7,442,945$4.53BInstitution
Southeastern Asset Management Inc10.29%6,205,303$3.77BInsider
Spo Advisory Corp7.81%4,709,835$2.86BInsider
Blackrock Inc6.88%4,152,008$2.52BInstitution
Holding Nns6.13%3,696,132$2.25BInsider
Jpmorgan Chase Co4.87%2,934,783$1.78BInstitution
Fmr LLC4.77%2,879,547$1.75BInstitution
State Street Corp4.64%2,797,277$1.70BInstitution
Bank Of America Corp3.92%2,365,832$1.44BInstitution
Principal Financial Group Inc3.66%2,204,425$1.34BInstitution

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MLM vs Building Material Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MLM78.88%21.12%Net SellingNet Selling
VMC92.44%6.38%Net SellingNet Selling
AMRZ37.05%0.40%Net BuyingNet Buying
CX3.71%0.00%
JHX34.84%0.00%

Martin Marietta Materials Stock Ownership FAQ

Who owns Martin Marietta Materials?

Martin Marietta Materials (NYSE: MLM) is owned by 96.38% institutional shareholders, 25.81% Martin Marietta Materials insiders, and 0.00% retail investors. Southeastern Asset Management Inc is the largest individual Martin Marietta Materials shareholder, owning 6.21M shares representing 10.29% of the company. Southeastern Asset Management Inc's Martin Marietta Materials shares are currently valued at $3.82B.

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