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Core & Main, Inc. (CNM) XNYS WHOLESALE-DURABLE GOODS, NEC Net insider buying (90d)
Latest CNM Insider Trades
About Core & Main, Inc. (CNM) Core & Main is a leading specialty distributor with a focus on water, wastewater, storm drainage, and fire protection products. The company provides solutions to municipalities, private water companies, and professional contractors across municipal, nonresidential, and residential end markets. The company's specialty products and services are used in the maintenance, repair, replacement, and construction of water and fire protection infrastructure.
Headquarters ST. LOUIS, MO
Employees 5,600
Listed 2021
Exchange XNYS https://www.coreandmain.com SEC filings for CNM on EDGAR
90-Day SEC Filing Activity Form 4 transaction type Transactions Shares Total value Open-market purchase 1 2,067 $95K Grant or award 9 25,191 Tax withholding / forfeiture 3 2,111
CNM Insider Transactions (Form 4) 81 49 Form 4 filings on record, the earliest from Oct 10, 2024, newest first. Filing history page 2 of 2.
Date Insider Transaction Security Shares Price Value Mar 9, 2026 SL Stephen O. Leclair - Officer Tax withholding / forfeiture Class A Common Stock 1,519
Recent CNM Form 8-K Filings 5
Recent CNM Form 144 Notices of Proposed Sale 3 A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
Filed Filer Relationship Shares Market value Notice Jun 30, 2026 - - - - View on EDGAR May 29, 2026 - - -
CNM Insider Trading - FAQ
What is the latest insider trade for CNM? Core & Main, Inc. (CNM) had 13 insider filings in the last 90 days, with the most recent on 2026-08-05. The full record for CNM runs to 49 Form 4 filings, the earliest from 2024-10-10. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
How many insiders are buying CNM stock? 1 insider purchase of CNM was filed in the last 90 days, totaling $95K.
How many insiders are selling CNM stock? No insider sales of CNM were filed in the last 90 days. 17 sales are on record for this company.
Where can I see CNM SEC filings (Form 4, 10-K, 10-Q, 8-K)? This page tracks CNM Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
How can I follow CNM insider buys? Create a free InsiderAlpha account and press Watch on this page to add CNM to your watchlist. A free account also opens the full scored daily plan with every past day and 3 months of price history. No card is required. Sign up at https://insideralpha.ai/register.
More Industrials Companies with Insider Activity Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
What is SEC Form 4? The filing insiders must submit within two business days of a trade, and how to read its transaction codes. Track CNM insider activity as it files Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
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$177K
Market cap $8.05B
P/E ratio 18.20
Dividend yield -
Average volume 2.32M
52 week high $67.18
52 week low $41.88
Today's high $44.01
Today's low $42.53
Open $43.91
Volume 1.66M
Previous close $43.74
Shares outstanding 187.19M Market cap
$8.05B
5,600 employees
CNM Insider Sentiment - Last 90 Days Share of open-market insider dollar volume that was buying versus selling, from SEC Form 4 filings.
100% Buying 0% Selling
1 insider purchase totaling $95K against 0 sales totaling $0.
Most-Active CNM Insiders - Last 90 Days 10 Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
Mar 10, 2026 SL Stephen O. Leclair - Officer Tax withholding / forfeiture Class A Common Stock 3,081 $49.38 $152K
Mar 10, 2026 RB Robyn L. Bradbury - Officer Tax withholding / forfeiture Class A Common Stock 205 $49.38 $10K
Mar 9, 2026 RB Robyn L. Bradbury - Officer Tax withholding / forfeiture Class A Common Stock 270 $49.96 $13K
Jan 26, 2026 JG Jeffrey D. Giles - Officer Grant or award Class A Common Stock 4,377 $0.00 -
Jan 26, 2026 JG Jeffrey D. Giles - Officer Grant or award Options (Rights to Buy) 10,617 $0.00 -
Sep 3, 2025 CH Carla D. Harper - Officer Grant or award Class A Common Stock 2,091 $0.00 -
Aug 18, 2025 MW Mark R. Witkowski - Officer Open-market sale Class A Common Stock 100,000 $64.08 $6.41M
Aug 18, 2025 MW Mark R. Witkowski - Officer Other Class B Common Stock and Limited Partnership Interests 100,000 $0.00 -
Aug 18, 2025 MW Mark R. Witkowski - Officer Other Class B Common Stock and Limited Partnership Interests 100,000 $0.00 -
Aug 18, 2025 MW Mark R. Witkowski - Officer Other Class B Common Stock and Limited Partnership Interests 100,000 $0.00 -
Jul 22, 2025 MH Michael G. Huebert - Officer Tax withholding / forfeiture Class A Common Stock 1,337 $65.03 $87K
Jul 22, 2025 RB Robyn L. Bradbury - Officer Open-market sale Class A Common Stock 5,000 $64.51 $323K
Jul 22, 2025 RB Robyn L. Bradbury - Officer Other Class B Common Stock and Limited Partnership Interests 5,000 $0.00 -
Jul 22, 2025 RB Robyn L. Bradbury - Officer Other Class B Common Stock and Limited Partnership Interests 5,000 $0.00 -
Jul 22, 2025 RB Robyn L. Bradbury - Officer Other Class B Common Stock and Limited Partnership Interests 5,000 $0.00 -
Jul 18, 2025 OK Orvin T. Kimbrough - Director Open-market sale Class A Common Stock 23,962 $61.77 $1.48M
Jul 18, 2025 OK Orvin T. Kimbrough - Director Other Class B Common Stock and Limited Partnership Interests 23,957 $0.00 -
Jul 18, 2025 OK Orvin T. Kimbrough - Director Other Class B Common Stock and Limited Partnership Interests 23,957 $0.00 -
Jul 18, 2025 OK Orvin T. Kimbrough - Director Other Class B Common Stock and Limited Partnership Interests 23,957 $0.00 -
Jul 18, 2025 OK Orvin T. Kimbrough - Director Tax withholding / forfeiture Class B Common Stock and Limited Partnership Interests 1,038 $0.00 -
Jul 18, 2025 JC James G. Castellano - Director Open-market sale Class A Common Stock 43,994 $61.98 $2.73M
Jul 18, 2025 JC James G. Castellano - Director Other Class B Common Stock and Limited Partnership Interests 34,674 $0.00 -
Jul 18, 2025 JC James G. Castellano - Director Other Class B Common Stock and Limited Partnership Interests 34,674 $0.00 -
Jul 18, 2025 JC James G. Castellano - Director Other Class B Common Stock and Limited Partnership Interests 34,674 $0.00 -
Jul 17, 2025 MW Mark R. Witkowski - Officer Open-market sale Class A Common Stock 72,331 $61.12 $4.42M
Jul 17, 2025 MW Mark R. Witkowski - Officer Open-market sale Class A Common Stock 27,669 $61.63 $1.71M
Jul 17, 2025 MW Mark R. Witkowski - Officer Other Class B Common Stock and Limited Partnership Interests 100,000 $0.00 -
Jul 17, 2025 MW Mark R. Witkowski - Officer Other Class B Common Stock and Limited Partnership Interests 100,000 $0.00 -
Jul 17, 2025 MW Mark R. Witkowski - Officer Other Class B Common Stock and Limited Partnership Interests 100,000 $0.00 -
Jul 3, 2025 SL Stephen O. Leclair - Officer Option exercise Class A Common Stock 80,028 $20.81 $1.67M
Jul 3, 2025 SL Stephen O. Leclair - Officer Open-market sale Class A Common Stock 80,028 $62.27 $4.98M
Jul 7, 2025 SL Stephen O. Leclair - Officer Option exercise Class A Common Stock 44,972 $20.81 $936K
Jul 7, 2025 SL Stephen O. Leclair - Officer Open-market sale Class A Common Stock 44,972 $61.91 $2.78M
Jul 3, 2025 SL Stephen O. Leclair - Officer Option exercise Options (Rights to Buy) 80,028 $0.00 -
Jul 7, 2025 SL Stephen O. Leclair - Officer Option exercise Options (Rights to Buy) 44,972 $0.00 -
Jul 1, 2025 RB Robyn L. Bradbury - Officer Open-market sale Class A Common Stock 13,363 $59.97 $801K
Jul 1, 2025 RB Robyn L. Bradbury - Officer Open-market sale Class A Common Stock 11,318 $61.08 $691K
Jul 1, 2025 RB Robyn L. Bradbury - Officer Open-market sale Class A Common Stock 319 $61.58 $20K
Jul 1, 2025 RB Robyn L. Bradbury - Officer Other Class B Common Stock and Limited Partnership Interests 24,957 $0.00 -
Jul 1, 2025 RB Robyn L. Bradbury - Officer Other Class B Common Stock and Limited Partnership Interests 24,957 $0.00 -
Jul 1, 2025 RB Robyn L. Bradbury - Officer Other Class B Common Stock and Limited Partnership Interests 24,957 $0.00 -
Dec 3, 2024 JG Jeffrey D. Giles - Officer Open-market sale Class A Common Stock 25,000 $54.71 $1.37M
Dec 3, 2024 JG Jeffrey D. Giles - Officer Other Class B Common Stock and Limited Partnership Interests 22,259 $0.00 -
Dec 3, 2024 JG Jeffrey D. Giles - Officer Other Class B Common Stock and Limited Partnership Interests 22,259 $0.00 -
Dec 3, 2024 JG Jeffrey D. Giles - Officer Other Class B Common Stock and Limited Partnership Interests 22,259 $0.00 -
Dec 3, 2024 SL Stephen O. Leclair - Officer Open-market sale Class A Common Stock 200,000 $54.88 $10.98M
Dec 3, 2024 SL Stephen O. Leclair - Officer Other Class B Common Stock and Limited Partnership Interests 200,000 $0.00 -
Dec 3, 2024 SL Stephen O. Leclair - Officer Other Class B Common Stock and Limited Partnership Interests 200,000 $0.00 -
Dec 3, 2024 SL Stephen O. Leclair - Officer Other Class B Common Stock and Limited Partnership Interests 200,000 $0.00 -
Dec 3, 2024 MN Margaret Newman - Director Other Class A Common Stock 14,968 $0.00 -
Dec 3, 2024 MN Margaret Newman - Director Open-market sale Class A Common Stock 15,000 $55.25 $829K
Dec 3, 2024 MN Margaret Newman - Director Other Class B Common Stock and Limited Partnership Interests 14,968 $0.00 -
Dec 3, 2024 MN Margaret Newman - Director Other Class B Common Stock and Limited Partnership Interests 14,968 $0.00 -
Dec 3, 2024 MN Margaret Newman - Director Other Class B Common Stock and Limited Partnership Interests 14,968 $0.00 -
Dec 3, 2024 BC Bradford A. Cowles - Officer Open-market sale Class A Common Stock 50,000 $55.07 $2.75M
Dec 3, 2024 BC Bradford A. Cowles - Officer Other Class B Common Stock and Limited Partnership Interests 50,000 $0.00 -
Dec 3, 2024 BC Bradford A. Cowles - Officer Other Class B Common Stock and Limited Partnership Interests 50,000 $0.00 -
Dec 3, 2024 BC Bradford A. Cowles - Officer Other Class B Common Stock and Limited Partnership Interests 50,000 $0.00 -
Oct 8, 2024 JG Jeffrey D. Giles - Officer Gift Class B Common Stock and Limited Partnership Interests 232,928 $0.00 -
Oct 8, 2024 JG Jeffrey D. Giles - Officer Gift Class B Common Stock and Limited Partnership Interests 232,928 $0.00 -
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