NYSE:CNM

Core & Main Stock Insider Trading

Industrials > Industrial - Distribution

Buy CNM

*Your capital is at risk

$52.12

+1.64 (+3.25%)

At Close: Jun 03, 2026

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 (Last 100 transactions)	-32.47
● Buy	1.18M shares
● Sell	764.92K shares
57% Buy Activity Weak Negative Correlation
Buy Signal Low Confidence Mar 12, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory negative Insider Power Score of -32.47. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Mar 12, 2026 Buy	Options (Rights to Buy) A-Award	Witkowski Mark R Chief Executive Officer	CEO / President	131 382 Value: $6.26M
Mar 12, 2026 Buy	Options (Rights to Buy) A-Award	Giles Jeffrey D EVP, Corporate Development	Officer	21 585 Value: $1.03M
Mar 12, 2026 Buy	Class A Common Stock A-Award	Giles Jeffrey D EVP, Corporate Development	Officer	3 021 Value: $143.9K
Mar 12, 2026 Buy	Options (Rights to Buy) A-Award	Bradbury Robyn L Chief Financial Officer	C-Suite Officer	34 488 Value: $1.64M
Mar 12, 2026 Buy	Class A Common Stock A-Award	Bradbury Robyn L Chief Financial Officer	C-Suite Officer	4 824 Value: $229.8K
Mar 11, 2026 Sell	Class A Common Stock F-InKind	Harper Carla D Senior Vp, Human Resources	Officer	89 Value: $4K
Mar 11, 2026 Sell	Class A Common Stock F-InKind	Huebert Michael G. President	CEO / President	447 Value: $22.0K
Mar 11, 2026 Sell	Class A Common Stock F-InKind	Stephens John Weldon Chief Accounting Officer	Officer	107 Value: $5K
Mar 11, 2026 Sell	Class A Common Stock F-InKind	Cowles Bradford A President	CEO / President	607 Value: $29.8K
Mar 11, 2026 Sell	Class A Common Stock F-InKind	Witkowski Mark R Chief Executive Officer	CEO / President	1 685 Value: $82.8K
Mar 11, 2026 Sell	Class A Common Stock F-InKind	Bradbury Robyn L Chief Financial Officer	C-Suite Officer	404 Value: $19.9K
Mar 11, 2026 Sell	Class A Common Stock F-InKind	Whittenburg Mark G General Counsel And Secretary	Officer	331 Value: $16.3K
Mar 10, 2026 Sell	Class A Common Stock F-InKind	Leclair Stephen O Executive Chair	Officer	3 081 Value: $152.1K
Mar 10, 2026 Sell	Class A Common Stock F-InKind	Witkowski Mark R Chief Executive Officer	CEO / President	937 Value: $46.3K
Mar 10, 2026 Sell	Class A Common Stock F-InKind	Cowles Bradford A President	CEO / President	741 Value: $36.6K
Mar 10, 2026 Sell	Class A Common Stock F-InKind	Whittenburg Mark G General Counsel And Secretary	Officer	557 Value: $27.5K
Mar 10, 2026 Sell	Class A Common Stock F-InKind	Harper Carla D Senior Vp, Human Resources	Officer	189 Value: $9K
Mar 10, 2026 Sell	Class A Common Stock F-InKind	Stephens John Weldon Chief Accounting Officer	Officer	198 Value: $10K
Mar 10, 2026 Sell	Class A Common Stock F-InKind	Bradbury Robyn L Chief Financial Officer	C-Suite Officer	205 Value: $10.1K
Mar 09, 2026 Sell	Class A Common Stock F-InKind	Bradbury Robyn L Chief Financial Officer	C-Suite Officer	270 Value: $13.5K
Mar 09, 2026 Sell	Class A Common Stock F-InKind	Leclair Stephen O Executive Chair	Officer	1 519 Value: $75.9K
Mar 09, 2026 Sell	Class A Common Stock F-InKind	Witkowski Mark R Chief Executive Officer	CEO / President	478 Value: $23.9K
Mar 09, 2026 Sell	Class A Common Stock F-InKind	Whittenburg Mark G General Counsel And Secretary	Officer	278 Value: $13.9K
Mar 09, 2026 Sell	Class A Common Stock F-InKind	Harper Carla D Senior Vp, Human Resources	Officer	77 Value: $4K
Mar 09, 2026 Sell	Class A Common Stock F-InKind	Stephens John Weldon Chief Accounting Officer	Officer	94 Value: $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