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 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Martin Marietta Materials: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-03
Trade date
2026-09-01
Reporting owners
Petro Michael J
Code
A
Shares
9,331
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0000916076-26-000088
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read MLM fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read MLM fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete 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

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.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗

Recent Congressional disclosures

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Ro Khanna2026-10-082026-09-25purchase$1,001 - $15,000
Ro Khanna2026-10-082026-09-11purchase$1,001 - $15,000

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.

Institutional source directory ↗Congressional source directory ↗

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.

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