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

MARTIN MARIETTA MATERIALS INC

Alert me on MLM

Insider buys, 6 months

Congress trades, 6 months

Signals, 6 months

Six months

After each filing

Sep 9 Buy Rep. April McClain Delaney House

1 week

−1.6%S&P +0.6%

1 month

−4.8%S&P +3.0%

3 months

Result in32 trading days

6 months

Result in95 trading days

Sep 9 Sale Rep. April McClain Delaney House

1 week

−1.6%S&P +0.6%

1 month

−4.8%S&P +3.0%

3 months

Result in32 trading days

6 months

Result in95 trading days

Aug 3 Buy Rep. April McClain Delaney House

1 week

−0.4%S&P −0.1%

1 month

−6.8%S&P −0.8%

3 months

Result in6 trading days

6 months

Result in69 trading days

Jun 5 Buy Rep. April McClain Delaney House

1 week

+6.3%S&P +2.1%

1 month

+3.2%S&P +1.9%

3 months

−7.4%S&P +3.9%

6 months

Result in30 trading days

May 19 Sale Rep. Josh Gottheimer House

1 week

+6.1%S&P +1.8%

1 month

+12.7%S&P +0.7%

3 months

−2.9%S&P +3.1%

6 months

Result in18 trading days

Show all 12

Apr 6 Buy Rep. April McClain Delaney House

1 week

+6.1%S&P +5.3%

1 month

+3.5%S&P +11.3%

3 months

−4.0%S&P +13.4%

6 months

−17.5%S&P +18.8%

Jan 5 Buy Rep. April McClain Delaney House

1 week

+3.0%S&P +0.3%

1 month

+3.8%S&P −2.1%

3 months

−3.3%S&P −2.0%

6 months

−11.3%S&P +9.2%

Oct 10, 2025 Sale Rep. Valerie Hoyle House

1 week

−1.8%S&P +1.2%

1 month

−2.9%S&P +3.0%

3 months

+4.4%S&P +4.9%

6 months

−3.1%S&P +6.2%

Sep 12, 2025 Buy Rep. Valerie Hoyle House

1 week

+1.4%S&P +1.2%

1 month

+7.5%S&P +0.5%

3 months

+2.9%S&P +3.4%

6 months

−4.4%S&P +2.1%

Sep 2, 2025 Sale Rep. April McClain Delaney House

1 week

+0.9%S&P +1.3%

1 month

+2.7%S&P +4.2%

3 months

−0.4%S&P +6.2%

6 months

+3.8%S&P +6.4%

Aug 13, 2025 Buy Rep. Lisa McClain House

1 week

−1.9%S&P −1.5%

1 month

−0.1%S&P +2.5%

3 months

+0.5%S&P +6.3%

6 months

+11.1%S&P +6.3%

Aug 13, 2025 Sale Rep. Lisa McClain House

1 week

−1.9%S&P −1.5%

1 month

−0.1%S&P +2.5%

3 months

+0.5%S&P +6.3%

6 months

+11.1%S&P +6.3%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for MLM

67 held · newest 567 held · newest 2

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See all 67 filings for MLM

Aeon news and offers by email

New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Signal history

No signal for this ticker yet. A signal is written when insider buying here scores one dot or more.

Stakes

Aug 21, 2026 Schedule 13D

LNA Holding SRL: 15.4%, 10,953,543 shares

Jun 30, 2026 Schedule 13G

STATE STREET CORPORATION: 5.2%, 3,162,829 shares

Mar 31, 2026 Schedule 13G

Vanguard Capital Management: 7.5%, 4,505,369 shares

Mar 31, 2026 Schedule 13G

Vanguard Portfolio Management: 5.3%, 3,167,718 shares

Mar 13, 2026 Schedule 13G, amended

The Vanguard Group: 0%, 0 shares

Schedule 13D is filed within 5 business days of crossing 5 percent by an investor who may seek to influence the company. Schedule 13G is filed by a passive holder, and a large institution has up to 45 days after the quarter end.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal

No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters

$50KQ4 2025

$50KQ1 2026

$50KQ2 2026

$50KQ3 2026

Unchanged from Q2 2026. Reported to the Senate each quarter by the firms it hires.Original report ↗

Read from LDA.gov between Sep 23, 2026 and Oct 16, 2026. Senate Office of Public Records cannot vouch for the data or analyses derived from these data after the data have been retrieved from LDA.gov.