MLM Martin Marietta Materials (MLM) Insider Trading, Ownership & Congress Trades
Mining & Metals · Mining & quarrying of nonmetallic minerals (no fuels) · CIK 0000916076
Activist 13DCongress · 1
Insider buyers, 180 days
0
Funds added, last quarter
477
13F, latest reported quarter
What the filings say about MLM
Congress, 1 year
1 bought · 2 sold
Latest: sale, 2026-08-25
Activist stakes (13D), 180 days
1 filing
Largest: 15.4% of the class
Martin Marietta Materials insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
No insider purchases or sales are on record for MARTIN MARIETTA MATERIALS INC in the period covered. Source: SEC Form 4 filings, as of 2026-10-27.
Insider
Filed
Shares
Value
Since filing
Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 6.7% of the 15,417 shares held after it.
- No other insider sold within 30 days.
- 477 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director PEREZ LAREE E sold about $636.6K of MLM on Aug 8, 2025, the largest insider sale at the company since 2024; 477 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 37.8% of the 3,523 shares held after it.
- No other insider sold within 30 days.
- 477 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: EVP and CHRO McCunniff Donald A. sold about $632.7K of MLM on Mar 5, 2025; 477 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 6.1% of the 8,984 shares held after it.
- No other insider bought within 30 days.
- 477 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP - Strategy and Development Petro Michael J bought about $249.9K of MLM on Mar 4, 2025, the largest insider purchase at the company on our record; 477 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 16.7% of the 59,970 shares held after it.
- 2 other insiders sold within 30 days.
- 477 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: EVP, General Counsel and Secy BAR ROSELYN R sold about $6.0M of MLM on Mar 14, 2024; 2 other insiders sold within 30 days and 477 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 7.1% of the 70,400 shares held after it.
- 2 other insiders sold within 30 days.
- 477 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chairman, Pres & CEO Nye C Howard sold about $3.0M of MLM on Mar 5, 2024, the largest insider sale at the company on our record; 2 other insiders sold within 30 days and 477 funds added in the latest 13F quarter.12 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
no insider buys or sells on file
Congress
1 member bought in the last year
the lowest in Mining & Metals
Funds
477 funds bought in last quarter
more than 93% of Mining & Metals
Revenue
+8.6% year over year
more than 53% of Mining & Metals
Margin
18.5% net margin
more than 89% of Mining & Metals
Buybacks
$200.0M repurchased, FY to 2026-06-30
more than 76% of Mining & Metals
Short interest
6.3% of the float short (float per yahoo 2026-10-26) · 3.3 days to cover · settled 2026-09-30
more than 73% of Mining & Metals
The situation: each line is one rule over one dataset
LNA Holding SRL disclosed a 5%+ stake (15.4%) in the last six months.
What changed in the last 30 days
Nothing new filed in the last 30 days
Watch MLM
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-18.2%12M
13D/G stake
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns MLM: institutional holders (13F)
13F holdings, latest reported quarter
4,692,446 sh
$2.7B
3,929,705 sh
$2.3B
3,197,395 sh
$1.8B
3,159,639 sh
$1.8B
2,446,762 sh
$1.4B
Congress trades in MLM
STOCK Act disclosures, US House only, filed up to 45 days after the trade
Sold 2026-08-25 · disclosed 15 days later
$250,001 - $500,000
Bought 2026-08-19 · disclosed 21 days later
$1,001 - $15,000
Bought 2026-07-24 · disclosed 10 days later
$15,001 - $50,000
Bought 2026-07-20 · disclosed 14 days later
$1,001 - $15,000
Bought 2026-07-17 · disclosed 17 days later
$1,001 - $15,000
Activist and 5% holders (13D/13G)
13D: intends to influence · 13G: passive
LNA Holding SRL
Activist 13D · 2026-08-24
15.4%
Kalk en Dolomiet Maatschappij SA
Activist 13D · 2026-08-24
15.4%
Financiere de Gestions Internationales SCA
Activist 13D · 2026-08-24
15.4%
GPI SA
Activist 13D · 2026-08-24
15.4%
MLM planned insider sales (Form 144)
No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
MLM mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Eaton Vance Atlanta Capital Select Equity Fund
$13.5M position · as of 2026-06-30
5.8%
FAM DIVIDEND FOCUS FUND
$31.5M position · as of 2026-06-30
5.0%
Invesco Building & Construction ETF
$21.2M position · as of 2026-07-31
4.9%
Saratoga Large Capitalization Value Portfolio
$735.2K position · as of 2026-05-31
4.8%
M.D. Sass Concentrated Value ETF
$3.6M position · as of 2026-05-31
4.7%
State Street(R) Materials Select Sector SPDR(R) ETF
$371.3M position · as of 2026-06-30
4.5%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return · C. Howard Nye
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2025
$14.3M
$25.7M
$2.8M
+126%
+39%
2024
$17.7M
$16.2M
$3.6M
+87%
+26%
2023
$18.5M
$35.1M
$3.5M
+79%
+26%
2022
$12.8M
$6.5M
$2.4M
+21%
+12%
2021
$14.9M
$39.0M
$2.7M
+56%
+27%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
An activist crossed the 5% line with declared intent.
The record shows 477 funds added last quarter, 1 House member(s) bought in 12 months, disclosed weeks after the trade. Each figure is a federal filing, dated the day it went public.
MLM financials
Revenue growth
+8.6%
XBRL, annual
Net margin
18.5%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
n/a
the filed year and its quarters do not reconcile, so the trailing figure is withheld
Revenue, TTM MLM
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | $6.8B |
| FY Dec 2022 | $6.2B |
| FY Dec 2021 | $5.4B |
| Jun 2026 | $1.9B |
| Mar 2026 | $1.4B |
| Dec 2025 | $1.5B |
| Sep 2025 | $1.8B |
| Jun 2025 | $1.8B |
| Mar 2025 | $1.4B |
| Dec 2024 | $1.4B |
| Sep 2024 | $1.9B |
At each fiscal year end
Single quarter
Net margin, TTM
n/a
the filed year and its quarters do not reconcile, so the trailing figure is withheld
Net margin, TTM MLM
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | +17.3% |
| FY Dec 2022 | +14.1% |
| FY Dec 2021 | +13.0% |
| Jun 2026 | +12.9% |
| Mar 2026 | +111.1% |
| Dec 2025 | +18.2% |
| Sep 2025 | +22.4% |
| Jun 2025 | +18.1% |
| Mar 2025 | +8.6% |
| Dec 2024 | +20.8% |
| Sep 2024 | +19.2% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$810.0M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Free cash flow, TTM MLM
| FY Dec 2025 | $978.0M |
| FY Dec 2024 | $604.0M |
| FY Dec 2023 | $878.0M |
| FY Dec 2022 | $509.0M |
| FY Dec 2021 | $714.6M |
| Jun 2026 | -$16.0M |
| Mar 2026 | $41.0M |
| Dec 2025 | $424.0M |
| Sep 2025 | $361.0M |
| Jun 2025 | $208.0M |
| Mar 2025 | -$15.0M |
| Dec 2024 | $453.0M |
| Sep 2024 | $317.0M |
At each fiscal year end
Single quarter
Debt to equity
0.52x
long-term 2026-06-30 plus current 2026-06-30; equity 2026-06-30
Debt to equity MLM
| FY Dec 2025 | 0.53x |
| FY Dec 2024 | 0.57x |
| FY Dec 2023 | 0.54x |
| FY Dec 2022 | 0.70x |
| FY Dec 2021 | 0.78x |
| Jun 2026 | 0.52x |
| Mar 2026 | 0.47x |
| Dec 2025 | 0.53x |
| Sep 2025 | 0.57x |
| Jun 2025 | 0.58x |
| Mar 2025 | 0.60x |
| Dec 2024 | 0.57x |
| Sep 2024 | 0.44x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
0.26x
TTM operating cash flow over long-term 2026-06-30 plus current 2026-06-30
Cash flow to debt MLM
| FY Dec 2025 | 0.34x |
| FY Dec 2024 | 0.27x |
| FY Dec 2023 | 0.35x |
| FY Dec 2022 | 0.20x |
| FY Dec 2021 | 0.22x |
| Jun 2026 | 0.26x |
| Mar 2026 | 0.34x |
| Dec 2025 | 0.34x |
| Sep 2025 | 0.33x |
| Jun 2025 | 0.35x |
| Mar 2025 | 0.28x |
| Dec 2024 | 0.27x |
| Sep 2024 | 0.33x |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+23.5%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on equity MLM
| FY Dec 2025 | +11.7% |
| FY Dec 2024 | +22.8% |
| FY Dec 2023 | +15.4% |
| FY Dec 2022 | +12.6% |
| FY Dec 2021 | +11.3% |
| Jun 2026 | +23.5% |
| Mar 2026 | +24.9% |
| Dec 2025 | +11.7% |
| Sep 2025 | +12.2% |
| Jun 2025 | +12.1% |
| Mar 2025 | +11.9% |
| Dec 2024 | +22.8% |
| Sep 2024 | +23.4% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+12.5%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets MLM
| FY Dec 2025 | +6.2% |
| FY Dec 2024 | +12.0% |
| FY Dec 2023 | +7.8% |
| FY Dec 2022 | +5.9% |
| FY Dec 2021 | +5.6% |
| Jun 2026 | +12.5% |
| Mar 2026 | +13.3% |
| Dec 2025 | +6.2% |
| Sep 2025 | +6.6% |
| Jun 2025 | +6.4% |
| Mar 2025 | +6.3% |
| Dec 2024 | +12.0% |
| Sep 2024 | +12.6% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
+6.8%
operating income after a 20.3% effective tax rate, over long-term 2026-06-30 plus current 2026-06-30 plus average of 2025-06-30 and 2026-06-30 minus cash
Return on invested capital MLM
| FY Dec 2025 | +7.9% |
| FY Dec 2024 | n/a |
| FY Dec 2023 | +9.7% |
| FY Dec 2022 | +8.2% |
| FY Dec 2021 | +7.2% |
| Jun 2026 | +6.8% |
| Mar 2026 | +7.4% |
| Dec 2025 | +7.9% |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | +14.7% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
+7.5%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
Return on capital employed MLM
| FY Dec 2025 | +8.2% |
| FY Dec 2024 | n/a |
| FY Dec 2023 | +9.7% |
| FY Dec 2022 | +8.9% |
| FY Dec 2021 | +8.2% |
| Jun 2026 | +7.5% |
| Mar 2026 | +7.8% |
| Dec 2025 | +8.2% |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | +15.9% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
12.46x
close 2026-10-23 over four quarters of diluted EPS, 2025-07-01 to 2026-06-30
P/E, trailing MLM
| FY Dec 2025 | 33.12x |
| FY Dec 2024 | 15.97x |
| FY Dec 2023 | 26.50x |
| FY Dec 2022 | 24.35x |
| FY Dec 2021 | 39.26x |
| Jun 2026 | 14.17x |
| Mar 2026 | 14.03x |
| Dec 2025 | 33.12x |
| Sep 2025 | 33.19x |
| Jun 2025 | 30.41x |
| Mar 2025 | 27.51x |
| Dec 2024 | 15.97x |
| Sep 2024 | 16.77x |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$36.3B
market value at close 2026-10-23 on 2026-07-27 shares, plus long-term 2026-06-30 plus current 2026-06-30, minus cash 2026-06-30
Enterprise value MLM
| FY Dec 2025 | $42.8B |
| FY Dec 2024 | $36.3B |
| FY Dec 2023 | $33.9B |
| FY Dec 2022 | $25.7B |
| FY Dec 2021 | $32.3B |
| Jun 2026 | $40.5B |
| Mar 2026 | $40.5B |
| Dec 2025 | $42.8B |
| Sep 2025 | $43.5B |
| Jun 2025 | $38.3B |
| Mar 2025 | $34.5B |
| Dec 2024 | $36.3B |
| Sep 2024 | $36.9B |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+2.7%
TTM free cash flow over market value at close 2026-10-23
FCF yield MLM
| FY Dec 2025 | +2.6% |
| FY Dec 2024 | +1.9% |
| FY Dec 2023 | +2.8% |
| FY Dec 2022 | +2.4% |
| FY Dec 2021 | +2.6% |
| Jun 2026 | +2.3% |
| Mar 2026 | +2.9% |
| Dec 2025 | +2.6% |
| Sep 2025 | +2.6% |
| Jun 2025 | +2.9% |
| Mar 2025 | +2.1% |
| Dec 2024 | +1.9% |
| Sep 2024 | +1.6% |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
0.10x
P/E over trailing EPS growth of 125%: four quarters to 2026-06-30 against the four to 2025-06-30
PEG, trailing MLM
| FY Dec 2025 | n/a |
| FY Dec 2024 | 0.22x |
| FY Dec 2023 | 0.74x |
| FY Dec 2022 | 1.03x |
| FY Dec 2021 | n/a |
| Jun 2026 | 0.11x |
| Mar 2026 | 0.10x |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | 0.22x |
| Sep 2024 | 0.19x |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-23. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2025-12 | 2024-12 | 2023-12 | 2022-12 | |
|---|---|---|---|---|
| Revenue | $6.2B | $6.5B | $6.8B | $6.2B |
| Gross profit | $1.9B | $1.6B | $1.7B | $1.4B |
| Operating income | $1.4B | $2.5B | $1.3B | $1.2B |
| Net income | $1.1B | $2.0B | $1.2B | $866.7M |
| EPS (diluted) | 18.77 | 32.41 | 18.82 | 13.87 |
| Operating cash flow | $1.8B | $1.5B | $1.5B | $991.0M |
| Cash | $67.0M | $670.0M | $1.3B | $358.0M |
| Long-term debt | $5.3B | $5.3B | $3.9B | $4.3B |
| Buybacks | $450.0M | $450.0M | $150.0M | $150.0M |
| Dividends paid | $197.0M | $189.0M | $174.0M | $160.0M |
SEC XBRL, fiscal years, as known on 2026-10-27
MLM Stock Sonar score 5/7 axes
Find similar shapesCompareMLM ranks highest on profitability (69th percentile) and financial health (49th), and lowest on risk and compliance (13th), among Mining & Metals peers.
5 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
MLM filings, in plain words
Have members of Congress traded MLM?
Yes. In the year to 2026-10-27, 1 House member disclosed buying MLM and 2 House members disclosed selling it; the latest on record is a sale by April McClain Delaney dated 2026-08-25.
Read the full summary
In the year to 2026-10-27, 1 member of Congress disclosed buying MLM and 2 members disclosed selling it; the latest on record is a sale by April McClain Delaney dated 2026-08-25. 1 activist Schedule 13D filing in the last 180 days declared an intent to influence the company, the largest for 15.4% of the class. Each figure is counted from SEC and House filings as of 2026-10-27, dated the day the filing was made public.
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