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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 43.18. 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
|
43.18 |
| ● 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 |
|---|---|---|---|---|
|
Dec 16, 2025 Sell |
Cardin Robert J SVP, Controller & Cao |
32 Value: $20.1K |
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|
Dec 16, 2025 Sell |
Bar Roselyn R Executive Vice President |
66 Value: $41.5K |
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|
Dec 02, 2025 Sell |
Bar Roselyn R Executive Vice President |
488 Value: $0 |
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|
Dec 01, 2025 Sell |
Flynn Jason Paul SVP And Cio |
123 Value: $75.7K |
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|
Dec 01, 2025 Sell |
Bar Roselyn R Executive Vice President |
420 Value: $258.4K |
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|
Nov 28, 2025 Buy |
Koraleski John J Director |
75 Value: $46.7K |
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Nov 28, 2025 Buy |
Pike Thomas Director |
51 Value: $31.8K |
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Nov 28, 2025 Buy |
Wajsgras David C Director |
61 Value: $38.0K |
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|
Aug 29, 2025 Buy |
Wajsgras David C Director |
61 Value: $37.6K |
||
|
Aug 29, 2025 Buy |
Pike Thomas Director |
51 Value: $31.4K |
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Aug 29, 2025 Buy |
Koraleski John J Director |
76 Value: $46.8K |
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Aug 29, 2025 Buy |
Koraleski John J Director |
76 Value: $46.8K |
||
|
Aug 29, 2025 Buy |
Pike Thomas Director |
51 Value: $31.4K |
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|
Aug 29, 2025 Buy |
Wajsgras David C Director |
61 Value: $37.6K |
||
|
Aug 14, 2025 Buy |
Flynn Jason Paul SVP And Cio |
0 Value: $0 |
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Aug 14, 2025 Buy |
Flynn Jason Paul SVP And Cio |
0 Value: $0 |
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|
Aug 08, 2025 Sell |
Perez Laree E Director |
1 038 Value: $636.6K |
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Aug 08, 2025 Sell |
Perez Laree E Director |
1 038 Value: $636.6K |
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|
Jul 08, 2025 Buy |
Petro Michael J SVP And CFO |
1 822 Value: $1.02M |
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Jul 08, 2025 Buy |
Petro Michael J SVP And CFO |
1 822 Value: $1.02M |
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|
May 30, 2025 Buy |
Wajsgras David C Director |
69 Value: $37.8K |
||
|
May 30, 2025 Buy |
Pike Thomas Director |
58 Value: $31.8K |
||
|
May 30, 2025 Buy |
Koraleski John J Director |
85 Value: $46.5K |
||
|
May 30, 2025 Buy |
Koraleski John J Director |
85 Value: $46.5K |
||
|
May 30, 2025 Buy |
Pike Thomas Director |
58 Value: $31.8K |
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
