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Buy CNM
Core & Main Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -32.47. In total, the insiders bought 1.18M and sold 764.92K CNM 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
|
-32.47 |
| ● Buy | 1.18M shares |
| ● Sell | 764.92K shares |
|
57% Buy Activity
Weak Negative Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Mar 09, 2026 Sell |
Huebert Michael G. President |
350 Value: $17.5K |
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|
Mar 09, 2026 Sell |
Cowles Bradford A President |
435 Value: $21.7K |
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|
Jan 26, 2026 Buy |
Giles Jeffrey D EVP, Corporate Development |
0 Value: $0 |
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Jan 26, 2026 Buy |
Giles Jeffrey D EVP, Corporate Development |
4 377 Value: $250.1K |
||
|
Jan 26, 2026 Buy |
Giles Jeffrey D EVP, Corporate Development |
10 617 Value: $606.7K |
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|
Jan 26, 2026 Buy |
Giles Jeffrey D EVP, Corporate Development |
150 177 Value: $8.58M |
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|
Dec 31, 2025 Sell |
Whittenburg Mark G General Counsel And Secretary |
25 500 Value: $0 |
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|
Sep 12, 2025 Buy |
Stephens John Weldon Chief Accounting Officer |
12 717 Value: $264.6K |
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|
Sep 12, 2025 Buy |
Stephens John Weldon Chief Accounting Officer |
12 717 Value: $264.6K |
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Sep 12, 2025 Buy |
Stephens John Weldon Chief Accounting Officer |
12 717 Value: $264.6K |
||
|
Sep 12, 2025 Buy |
Stephens John Weldon Chief Accounting Officer |
12 717 Value: $264.6K |
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|
Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
2 091 Value: $135.0K |
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Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
0 Value: $0 |
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|
Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
4 839 Value: $223.9K |
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|
Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
2 568 Value: $53.4K |
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Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
3 891 Value: $86.0K |
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Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
4 506 Value: $225.8K |
||
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Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
4 506 Value: $225.8K |
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Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
3 891 Value: $86.0K |
||
|
Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
2 568 Value: $53.4K |
||
|
Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
4 839 Value: $223.9K |
||
|
Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
0 Value: $0 |
||
|
Sep 03, 2025 Buy |
Harper Carla D Senior Vp, Human Resources |
2 091 Value: $135.0K |
||
|
Aug 18, 2025 Sell |
Witkowski Mark R Chief Executive Officer |
100 000 Value: $0 |
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|
Aug 18, 2025 Buy |
Witkowski Mark R Chief Executive Officer |
100 000 Value: $6.48M |
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
