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Buy MLM
Martin Marietta Materials Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be positive at 43.40. In total, the insiders bought 104.22K and sold 21.66K MLM shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
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43.40 |
| ● Buy | 104.22K shares |
| ● Sell | 21.66K shares |
|
76% Buy Activity
Negligible or No Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Feb 24, 2026 Sell |
Nye C Howard Chairman, Pres & CEO |
1 221 Value: $850.9K |
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Feb 24, 2026 Sell |
Petro Michael J SVP And CFO |
94 Value: $65.5K |
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Feb 24, 2026 Sell |
Cardin Robert J SVP, Controller & Cao |
103 Value: $71.8K |
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Feb 23, 2026 Sell |
Flynn Jason Paul SVP And Cio |
177 Value: $121.0K |
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Feb 23, 2026 Sell |
Mccunniff Donald A. EVP And Chro |
192 Value: $131.3K |
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Feb 23, 2026 Sell |
Nye C Howard Chairman, Pres & CEO |
1 805 Value: $1.23M |
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Feb 23, 2026 Sell |
Petro Michael J SVP And CFO |
211 Value: $144.2K |
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Feb 23, 2026 Sell |
Cardin Robert J SVP, Controller & Cao |
209 Value: $142.9K |
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Feb 20, 2026 Buy |
Cardin Robert J SVP, Controller & Cao |
658 Value: $451.3K |
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Feb 20, 2026 Buy |
Flynn Jason Paul SVP And Cio |
592 Value: $324.9K |
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Feb 20, 2026 Buy |
Flynn Jason Paul SVP And Cio |
595 Value: $408.1K |
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Feb 20, 2026 Buy |
Mccunniff Donald A. EVP And Chro |
1 277 Value: $875.9K |
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Feb 20, 2026 Buy |
Nye C Howard Chairman, Pres & CEO |
2 216 Value: $1.22M |
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Feb 20, 2026 Buy |
Nye C Howard Chairman, Pres & CEO |
6 405 Value: $4.39M |
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Feb 20, 2026 Buy |
Petro Michael J SVP And CFO |
931 Value: $638.6K |
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Feb 17, 2026 Sell |
Cardin Robert J SVP, Controller & Cao |
822 Value: $547.9K |
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Feb 17, 2026 Buy |
Cardin Robert J SVP, Controller & Cao |
1 869 Value: $1.25M |
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Feb 17, 2026 Sell |
Nye C Howard Chairman, Pres & CEO |
9 717 Value: $6.48M |
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Feb 17, 2026 Buy |
Petro Michael J SVP And CFO |
1 724 Value: $1.15M |
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Feb 17, 2026 Sell |
Petro Michael J SVP And CFO |
758 Value: $505.2K |
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Feb 17, 2026 Buy |
Flynn Jason Paul SVP And Cio |
222 Value: $148.0K |
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Feb 17, 2026 Sell |
Flynn Jason Paul SVP And Cio |
107 Value: $71.3K |
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Feb 17, 2026 Buy |
Nye C Howard Chairman, Pres & CEO |
22 365 Value: $14.9M |
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Dec 16, 2025 Sell |
Nye C Howard Chairman, Pres & CEO |
298 Value: $187.6K |
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Dec 16, 2025 Sell |
Mccunniff Donald A. EVP And Chro |
50 Value: $31.5K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
