SEC filingsOct 12, 2026 to Oct 19, 2026: insiders reported 840 purchases and sales across 212 companies.840 insider purchases and sales in 7 daysSee the filings →
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Company profile

MLM

Martin Marietta Materials, Inc.
NYSEMaterials

Latest close: 500.84 USD · Oct 16, 2026 · 1 year · split-adjusted

On the price, the facts of the public record◇Significant stake declared (13D)●Results filed
With an account, also○dividends▲splits◌next earningswith an account

End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.

Latest on record

The most recent facts, as filed.

Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.

  1. Sep 16, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
  2. Aug 24, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
  3. Aug 18, 2026Material event · 8-KFiled by the company itself.Open the filing ↗

In numbers

What this profile holds, counted.

Closes · 1 year250
SEC filings on record2,6727 flagged findings
Reported transactions (Form 4)41since Mar 5, 2025 · and 11 other holdings
Corporate events (8-K)30since Nov 4, 2024

What the record says

Description, identity and filings, each with its source.

Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.

What the company does

Martin Marietta Materials, Inc. is an American company and a supplier of aggregates and heavy building materials, with operations spanning 26 states, Canada, and the Caribbean. In particular, Martin Marietta Materials supplies resources for the construction of roads, sidewalks, and foundations.

Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.

SEC topics

Regulatory history

Topics detected in its SEC reports, with the original excerpt.

Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.

  • 2026-04-30capital return (buybacks/dividends)recentOpen filing ↗
    “…- January 31, 2026 — $ — — 11,024,507 February 1, 2026 - February 28, 2026 36,897 $ 677.55 36,897 10,987,610 March 1, 2026 - March…”
    +1 more passage from the same document
    • “…31, 2026 — $ — — 11,024,507 February 1, 2026 - February 28, 2026 36,897 $ 677.55 36,897 10,987,610 March 1, 2026 - March 31, 2026…”

Original excerpts from SEC filings, untranslated. Not advice and not a prediction.

SEC record

SEC dossier

What this company has filed with the SEC, in plain language.

The 25 most recent filings (of 2,672)

Everything filed

Every SEC filing, newest first, with what it is. Below, each type with its own explanation.

  • Sep 16, 268-K ↗Current report · Entered a material agreement
  • Insider transaction · 5 Form 4 filingsshow all 5hide
  • Aug 24, 26SCHEDULE 13D ↗Stake with intent to influence · LNA Holding SRL · 15.4% · event on Aug 21, 26
  • Insider transaction · 2 Form 3 filingsshow all 2hide
  • Aug 24, 268-K ↗Current report · Entered a material agreement
  • Aug 18, 268-K ↗Current report · A material agreement was terminated
  • Aug 14, 268-K ↗Current report · Took on a new financial obligation
  • Aug 12, 268-K ↗Current report · Entered a material agreement
  • Aug 10, 26424B5 ↗Securities offering
  • Aug 10, 268-K ↗Current report · Other events
  • Aug 7, 26SCHEDULE 13G ↗Passive stake · STATE STREET CORPORATION · 5.2% · event on Jun 30, 26
  • Aug 5, 268-K ↗Current report · Other events
  • Aug 4, 268-K ↗Current report · A senior executive left or was appointed
  • Aug 4, 26Form 4 ↗Insider transaction
  • Jul 30, 2610-Q ↗Quarterly report
  • Jul 30, 268-K ↗Current report · Results · Communication to the market
  • Jul 15, 268-K ↗Current report · Took on a new financial obligation
  • Jun 29, 268-K ↗Current report · Sold unregistered shares
  • Jun 29, 268-K ↗Current report · Communication to the market
  • Jun 2, 26Form 4 ↗Insider transaction

2,672 filings on record, the oldest from May 14, 96.

Listing the 25 most recent filings of the 2,672 on record.

8-Ks, explained

Structure90Governance38
  • Sep 16, 26StructureEntered a material agreement+1 more in the same filing8-K 1.01 ↗
  • Aug 24, 26StructureEntered a material agreement+5 more in the same filing8-K 1.01 ↗
  • Aug 18, 26StructureA material agreement was terminated+3 more in the same filing8-K 1.02 ↗
  • Aug 14, 26StructureTook on a new financial obligation+3 more in the same filing8-K 2.03 ↗
  • Aug 12, 26StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
  • Aug 4, 26GovernanceA senior executive left or was appointed8-K 5.02 ↗
  • Jul 15, 26StructureTook on a new financial obligation+2 more in the same filing8-K 2.03 ↗
  • Jun 29, 26StructureSold unregistered shares+3 more in the same filing8-K 3.02 ↗
  • May 14, 26GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • Apr 27, 26GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
  • Feb 23, 26StructureCompleted an acquisition or disposal+2 more in the same filing8-K 2.01 ↗
  • Dec 19, 25StructureTook on a new financial obligation+2 more in the same filing8-K 2.03 ↗

7 older filings not shown · The record reaches back to Oct 20, 04.

Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.

Ownership and control

Schedule 13D: stake and stated purpose

Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.

  • LNA Holding SRL15.4%Aug 21, 26SCHEDULE 13D ↗4 co-filers on this document — the figure is the largest single stake, not their sum.

Schedule 13G: short-form filing

The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.

Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.

SEC record

Insider transactions

Buys and sells reported by officers, directors and major shareholders on SEC Form 4.

No purchases or sales are on record in this stretch; only other transactions (compensation, withholding, exercises or gifts).

Stock compensation, tax and giftsshow the 40 other transactionshide

Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.

  • Sep 1, 26Compensationamount n/aMichael J PetroSVP and CFO↗
  • Aug 31, 26Compensation$35KMARTIN J LYONS↗
  • Aug 31, 26Compensation$34KThomas Pike↗
  • Aug 31, 26Compensation$40KDAVID C WAJSGRAS↗
  • Aug 21, 26Compensationamount n/aPhilipp Niemann↗
  • Aug 3, 26Tax$200KMichael J PetroSVP and CFO↗
  • May 29, 26Compensation$35KMARTIN J LYONS↗
  • May 29, 26Compensation$34KThomas Pike↗
  • May 29, 26Compensation$40KDAVID C WAJSGRAS↗
  • May 14, 26Compensationamount n/aDorothy M Ables↗
  • May 14, 26Compensationamount n/aGAYLA J DELLY↗
  • May 14, 26Compensationamount n/aAnthony R Foxx↗
  • May 14, 26Compensationamount n/aMARTIN J LYONS↗
  • May 14, 26Compensationamount n/aMary T Mack↗
  • May 14, 26Compensationamount n/aLAREE E PEREZ↗
  • May 14, 26Compensationamount n/aThomas Pike↗
  • May 14, 26Compensationamount n/aDONALD W SLAGER↗
  • May 14, 26Compensationamount n/aDAVID C WAJSGRAS↗
  • May 1, 26Compensationamount n/aChristopher William SamborskiEVP, COO↗
  • Mar 1, 26Compensationamount n/aDonald A. McCunniffEVP and CHRO↗
  • Mar 1, 26Compensationamount n/aC Howard NyeChairman, Pres & CEO↗
  • Mar 1, 26Compensationamount n/aMichael J PetroSVP and CFO↗
  • Mar 1, 26Compensationamount n/aGeorge Frederick SchoenEVP, GC and Corp. Secretary↗
  • Feb 27, 26Compensation$47KJOHN J KORALESKI↗
  • Feb 27, 26Compensation$32KThomas Pike↗
  • Feb 27, 26Compensation$38KDAVID C WAJSGRAS↗
  • Feb 24, 26Tax$72KRobert J CardinSVP, Controller & CAO↗
  • Feb 24, 26Tax$21KJason Paul FlynnSVP and CIO↗
  • Feb 24, 26Tax$851KC Howard NyeChairman, Pres & CEO↗
  • Feb 24, 26Tax$66KMichael J PetroSVP and CFO↗
  • Feb 23, 26Tax$143KRobert J CardinSVP, Controller & CAO↗
  • Feb 23, 26Tax$121KJason Paul FlynnSVP and CIO↗
  • Feb 23, 26Tax$131KDonald A. McCunniffEVP and CHRO↗
  • Feb 23, 26Tax$1.2MC Howard NyeChairman, Pres & CEO↗
  • Feb 23, 26Tax$144KMichael J PetroSVP and CFO↗
  • Feb 20, 26Compensationamount n/aRobert J CardinSVP, Controller & CAO↗
  • Feb 20, 26Compensation$325KJason Paul FlynnSVP and CIO↗
  • Feb 20, 26Compensationamount n/aJason Paul FlynnSVP and CIO↗
  • Feb 20, 26Compensationamount n/aDonald A. McCunniffEVP and CHRO↗
  • Feb 20, 26Compensation$1.2MC Howard NyeChairman, Pres & CEO↗

The full record holds 255 transactions and goes back to Feb 17, 23.

Its sector and its market

Martin Marietta Materials, Inc. among Materials companies

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Coverage

What sits behind this page.

Where each figure comes from and how far it reaches.

Prices
End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
Series quality
250 clean closes in the period.
SEC records
2,672 documents on file, from May 14, 1996 to Sep 16, 2026.
Company description
Wikipedia, read on Sep 3, 2026.
This page
Generated on Oct 19, 2026; refreshed through the day.

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Which SEC documents appear here?

Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.

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It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.

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