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Michael J. Petro

MLM
SVP - STRATEGY AND DEVELOPMENT · MARTIN MARIETTA MATERIALS INC · CIK 0001878191
FILING MIX · LIFETIME52%/48%
BUYS
15
SELLS
14
TOTAL VALUE
$3.12M
COMPANIES
1
ACTIVE SINCE
Jan 2022
HOLDINGS NOW
15,359
AVG SELL PX
$550.42
TRADE KIND
SHOWING 29 / 29
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 1 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Michael J. Petro, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d1+100.00%+0.54%-3.63%+4.17%+4.17%—
14d1+100.00%+5.69%-2.75%+8.43%+8.43%—
30d1+100.00%+4.99%-6.68%+11.67%+11.67%—
60d1+100.00%+15.99%-1.46%+17.45%+17.45%—
90d1+100.00%+17.25%+3.06%+14.20%+14.20%—
180d1+100.00%+33.44%+12.16%+21.29%+21.29%—
1y1+100.00%+43.01%+19.13%+23.89%+23.89%—
2y1(1 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MLM · 15,358.603 shares · as of Mar 1, 2026
03,8407,67911,51915,3592023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 15 buys / 14 sellsCOVERAGE · 17 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
2,960——15,358.603Mar 1, 2026Mar 3, 2026 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP and CFO
94$696.85$65.5K12,398.603Feb 24, 2026Feb 25, 2026 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP and CFO
211$683.60$144.2K12,492.603Feb 23, 2026Feb 25, 2026 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
931——12,703.603Feb 20, 2026Feb 24, 2026 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP and CFO
758$666.53$505.2K11,772.603Feb 17, 2026Feb 19, 2026 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
1,724——12,530.603Feb 17, 2026Feb 19, 2026 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
1,822——10,806.603Jul 8, 2025Jul 9, 2025 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASE
SVP - Strategy and Development
550$454.37$249.9K8,984.603Mar 4, 2025Mar 5, 2025 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
200$490.64$98.1K8,434.603Feb 24, 2025Feb 25, 2025 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
733——8,634.603Feb 21, 2025Feb 25, 2025 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
2,454——9,112.603Feb 18, 2025Feb 20, 2025 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
1,211$533.99$646.7K7,901.603Feb 18, 2025Feb 20, 2025 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
93$593.22$55.2K6,658.603Dec 2, 2024Dec 3, 2024 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
96$553.31$53.1K6,751.603Feb 26, 2024Feb 27, 2024 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
714——6,847.603Feb 23, 2024Feb 27, 2024 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
405$536.30$217.2K5,213.603Feb 21, 2024Feb 22, 2024 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
920——6,133.603Feb 21, 2024Feb 27, 2024 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
250$533.14$133.3K5,618.603Feb 20, 2024Feb 22, 2024 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
650——5,868.603Feb 24, 2023Feb 28, 2023 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
171$359.70$61.5K5,218.603Feb 21, 2023Feb 22, 2023 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
209——5,389.603Feb 21, 2023Feb 22, 2023 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
88$371.68$32.7K5,180.603Feb 17, 2023Feb 21, 2023 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
55$380.08$20.9K5,268.603Feb 22, 2022Feb 23, 2022 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
217$295.24$64.1K5,323.603Feb 18, 2022Feb 22, 2022 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
861——5,106.603Feb 18, 2022Feb 22, 2022 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
75$385.02$28.9K4,245.603Feb 17, 2022Feb 22, 2022 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
368——4,442.603Feb 14, 2022Feb 16, 2022 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
SALE
SVP - Strategy and Development
122$369.05$45.0K4,320.603Feb 14, 2022Feb 16, 2022 ↗View →
MLM
MARTIN MARIETTA MATERIALS INC
PURCHASEGRANT
Stock grant
1,605$437.17$701.7K4,074.603Jan 5, 2022Jan 7, 2022 ↗View →
Other insiders · MLM
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About this filer
CIK 0001878191
ROLE
SVP - Strategy and Development
PRIMARY
MLM
COMPANIES
1
ACTIVE SINCE
Jan 2022
MARKETPEEL · /INSIDER/0001878191DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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