MARTIN MARIETTA MATERIALS INC (MLM)

Materials · Mining & Quarrying of Nonmetallic Minerals (No Fuels)

MARTIN MARIETTA MATERIALS INC (MLM) stock research on InvestAtlant: institutional ownership from 13F filings, insider Form 4 activity, and SEC context.

Top institutional holders (2026-Q3)

InstitutionSharesValue% Outstanding
Sumitomo Mitsui Trust Group, Inc. 124,654 $59.81M 0.21%
FENIMORE ASSET MANAGEMENT INC 89,370 $42.88M 0.15%
Lazard Freres Gestion S.A.S. 74,559 $35.8K 0.12%
Border to Coast Pensions Partnership Ltd 61,230 $29.3K 0.10%
Douglas Lane & Associates, LLC 55,793 $26.77M 0.09%
CONFLUENCE INVESTMENT MANAGEMENT LLC 49,097 $23.56M 0.08%
NEW YORK STATE TEACHERS RETIREMENT SYSTEM 41,227 9.8K 0.07%
STRS OHIO 37,670 8.07M 0.06%

Recent insider transactions

DateInsiderTitleTypeValue
2026-09-01 Petro Michael J SVP and CFO A $0
2026-08-31 WAJSGRAS DAVID C Director A $40.5K
2026-08-31 Pike Thomas Director A $34.2K
2026-08-31 LYONS MARTIN J Director A $35.3K
2026-08-21 Niemann Philipp Director A $0
2026-08-03 Petro Michael J SVP and CFO F 99.6K
2026-05-14 SLAGER DONALD W Director A $0
2026-05-14 Pike Thomas Director A $0

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Holdings from SEC 13F. Insider trades from Form 4. Congress from House and Senate PTRs. Real-time market prices via TradingView.