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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

MLM

MARTIN MARIETTA MATERIALS INC

Superinvestors

Institutional investors holding MLM

Consensus →
InvestorFundWeightSharesValueQuarter
Thomas RussoGardner Russo & Quinn4.96%715,411$421.1M2026Q1
Chase ColemanTiger Global Management3.77%535,700$86.8M2007Q2
Ruane CunniffSequoia Fund2.90%2,727,604$227.9M2010Q1
Wallace WeitzWeitz Investment Management1.63%39,775$23.4M2026Q1
John ArmitageEgerton Capital0.91%165,338$79.1M2025Q1
Mario CibelliMarathon Partners0.83%12,500$2.0M2016Q1
Thomas GaynerMarkel Group0.57%150,870$8.1M2004Q4
Mason HawkinsLongleaf Partners – Southeastern Asset Management0.51%1,039,807$103.9M2013Q4
FPA / Steven RomickFPA Crescent Fund – First Pacific Advisors0.45%291,000$11.3M2002Q2
Christopher DavisDavis Selected Advisers0.28%716,959$94.7M2014Q2
Bill NygrenOakmark Select Fund – Harris Associates0.15%0$185.1M2011Q4
Kenneth FisherFisher Asset Management0.00%368$217K2026Q1
First Eagle Investment ManagementFirst Eagle Investment Management0.00%111$43K2022Q1

Congressional Activity

Congressional data coming soon

Insider Activity

1

Total trades

$0

Volume

1

Buys

0

Sells

Last trade: May 14, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
May 14, 2026Dorothy M AblesBuy–

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.