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Public ownership evidence

Martin Marietta Materials (MLM) Ownership Disclosures

Read MLM insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-09-032026-09-01Petro Michael JA9,331Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-01 and its public availability date is 2026-09-03. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent Form 4 activity

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2026-09-032026-09-01Petro Michael JA9,331Not reported
2026-09-032026-08-31WAJSGRAS DAVID CA78Not reported
2026-09-032026-08-31Pike ThomasA66Not reported
2026-09-032026-08-31LYONS MARTIN JA68Not reported
2026-08-262026-08-21Niemann PhilippA337Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2922$12,687None
Cornerstone Financial Management LLC2026-03-312026-08-2915$8,830None
Cornerstone Financial Management LLC2025-12-312026-08-2916$9,963None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-294,419$2,112,863None
Advisors Asset Management, Inc.2021-12-312026-08-2834,316$15,116,884None
Advisors Asset Management, Inc.2022-12-312026-08-2819,872$6,716,140None
Advisors Asset Management, Inc.2020-06-302026-08-2822,489$4,645,553None
Advisors Asset Management, Inc.2022-06-302026-08-2826,954$8,066,000None
Advisors Asset Management, Inc.2021-09-302026-08-2830,946$10,574,000None
Corient Private Wealth LP2026-06-302026-08-282,980$1,718,770None
Corient Private Wealth LP2026-06-302026-08-28107,506$61,999,575None
Principia Wealth Advisory, LLC2026-06-302026-08-277$4,037None
Principia Wealth Advisory, LLC2026-03-312026-08-272$1,177None
Brown Financial Advisors2026-06-302026-08-272,383$1,374,276None
Advisors Asset Management, Inc.2024-03-312026-08-2721,509$13,205,235None
Advisors Asset Management, Inc.2025-03-312026-08-2723,809$11,383,797None
Advisors Asset Management, Inc.2022-09-302026-08-2727,810$8,957,000None
Advisors Asset Management, Inc.2020-12-312026-08-2721,810$6,193,000None
Advisors Asset Management, Inc.2022-03-312026-08-2730,940$11,908,497None
Advisors Asset Management, Inc.2023-06-302026-08-2716,176$7,468,297None
Advisors Asset Management, Inc.2023-09-302026-08-2716,638$6,829,566None
Advisors Asset Management, Inc.2023-03-312026-08-2718,523$6,576,776None
Advisors Asset Management, Inc.2021-03-312026-08-2726,496$8,897,887None
Advisors Asset Management, Inc.2021-06-302026-08-2730,150$10,607,000None
Advisors Asset Management, Inc.2020-09-302026-08-2719,463$4,580,812None
Advisors Asset Management, Inc.2025-09-302026-08-2720,947$13,202,475None
Advisors Asset Management, Inc.2023-12-312026-08-2717,812$8,886,585None
Redwood Investment Management, LLC2025-09-302026-08-271,914$1,206,000None
Advisors Asset Management, Inc.2019-12-312026-08-2627,104$7,579,363None
Advisors Asset Management, Inc.2025-06-302026-08-2520,942$11,496,320None
CYBER HORNET ETFs LLC2026-06-302026-08-25162$93,425None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2588,562$51,073,705None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2551,073,705$88,562,000None
Kings Path Partners LLC2026-03-312026-08-2218$10,596None
Advisors Asset Management, Inc.2024-09-302026-08-2224,995$13,453,559None
Advisors Asset Management, Inc.2024-06-302026-08-2223,742$12,863,416None
Advisors Asset Management, Inc.2024-12-312026-08-2224,809$12,813,849None
Advisors Asset Management, Inc.2025-12-312026-08-2219,985$12,443,860None
Advisors Asset Management, Inc.2020-03-312026-08-2223,856$4,514,271None
Assenagon Asset Management S.A.2026-06-302026-08-2228,829$16,625,684None
HARVEY CAPITAL MANAGEMENT INC2026-06-302026-08-2214,095$8,128,587None
Rehmann Capital Advisory Group2026-06-302026-08-21372$214,910None
Kingsview Wealth Management, LLC2026-06-302026-08-20434$250,487None
Archer Investment Corp2026-06-302026-08-2024$14,021None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-206,964$4,015,910None
Beacon Pointe Advisors, LLC2026-06-302026-08-193,148$1,818,598None
Advisors Asset Management, Inc.2019-03-312026-08-1920,234$4,070,676None
Advisors Asset Management, Inc.2019-09-302026-08-1927,194$7,453,875None
Advisors Asset Management, Inc.2019-06-302026-08-1926,117$6,009,783None
Orion Capital Management LLC2026-06-302026-08-1920$11,622None

90-day public filing window, up to 50 source positions.

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.