Core & Main (CNM) Insider Trading & Ownership $63.95 -0.15 (-0.23%) Closing price 08/8/2025 03:59 PM EasternExtended Trading$63.95 0.00 (0.00%) As of 08/8/2025 04:35 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Core & Main (NYSE:CNM) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage3.53%Number OfInsiders Buying(Last 12 Months)0Number OfInsiders Selling(Last 12 Months)12Amount OfInsider Selling(Last 12 Months)$54.02M Get CNM Insider Trade Alerts Want to know when executives and insiders are buying or selling Core & Main stock? 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Email Address CNM Insider Buying and Selling by Quarter Core & Main Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails7/22/2025Robyn L BradburyCFOSell5,000$64.51$322,550.00 7/18/2025James G CastellanoDirectorSell43,994$61.98$2,726,748.12 7/18/2025Orvin T KimbroughDirectorSell23,962$61.77$1,480,132.74 7/17/2025Mark R WitkowskiCEOSell100,000$61.26$6,126,000.00 7/7/2025Stephen O LeclairInsiderSell44,972$61.91$2,784,216.52 7/3/2025Stephen O LeclairInsiderSell80,028$62.27$4,983,343.56 7/1/2025Robyn L BradburyCFOSell25,000$60.49$1,512,250.00 6/9/2025Mark G WhittenburgGeneral CounselSell49,100$60.03$2,947,473.00 6/6/2025Mark G WhittenburgGeneral CounselSell900$60.03$54,027.00 6/3/2025Laura K SchneiderInsiderSell45,695$56.25$2,570,343.75 Get Insider Trades Delivered To Your InboxEnter your email address below to receive a concise daily summary of insider buying activity, insider selling activity and changes in hedge fund holdings. 5/28/2025John R SchallerEVPSell9,794$55.00$538,670.00 4/28/2025John Weldon StephensCAOSell10,214$53.02$541,546.28 4/7/2025April McClain DelaneyU.S. Congress Member (D-MD)Buy$45.35$1,001 - $15,0004/2/2025John Weldon StephensCAOSell41,963$50.48$2,118,292.24 3/10/2025John R SchallerEVPSell21,868$46.82$1,023,859.76 2/10/2025Bradford A CowlesPresidentSell25,000$54.48$1,362,000.00 2/8/2025April McClain DelaneyU.S. Congress Member (D-MD)Buy$54.55$1,001 - $15,0001/15/2025Mark G WhittenburgGeneral CounselSell1,974$55.29$109,142.46 1/14/2025Bradford A CowlesPresidentSell12,500$54.07$675,875.00 1/10/2025Bradford A CowlesPresidentSell12,500$50.50$631,250.00 1/10/2025John R SchallerEVPSell60,452$50.57$3,057,057.64 1/10/2025Mark G WhittenburgGeneral CounselSell50,000$50.49$2,524,500.00 12/3/2024Bradford A CowlesPresidentSell50,000$55.07$2,753,500.00 12/3/2024Jeffrey D GilesEVPSell25,000$54.71$1,367,750.00 12/3/2024Margaret NewmanDirectorSell15,000$55.25$828,750.00 12/3/2024Stephen O LeclairCEOSell200,000$54.88$10,976,000.00 (Data available from 1/1/2013 forward) CNM Insider Trading Activity - Frequently Asked Questions Who is on Core & Main's Insider Roster? The list of insiders at Core & Main includes Bradford A Cowles, Cd&R Investment Associates X,, James G Castellano, Jeffrey D Giles, John R Schaller, John Weldon Stephens, Laura K Schneider, Margaret Newman, Mark G Whittenburg, Mark R Witkowski, Orvin T Kimbrough, Robyn L Bradbury, and Stephen O Leclair. Learn more on insiders at CNM. What percentage of Core & Main stock is owned by insiders? 3.53% of Core & Main stock is owned by insiders. Learn more on CNM's insider holdings. Which Core & Main insiders have been selling company stock? The following insiders have sold CNM shares in the last 24 months: Bradford A Cowles ($7,845,875.00), Cd&R Investment Associates X, ($3,900,432,912.78), James G Castellano ($3,822,175.12), Jeffrey D Giles ($4,758,950.00), John R Schaller ($6,669,087.40), John Weldon Stephens ($8,053,912.64), Laura K Schneider ($11,047,343.75), Margaret Newman ($828,750.00), Mark G Whittenburg ($11,234,642.46), Mark R Witkowski ($15,766,900.00), Orvin T Kimbrough ($1,928,782.74), Robyn L Bradbury ($1,834,800.00), and Stephen O Leclair ($31,463,560.08). How much insider selling is happening at Core & Main? Insiders have sold a total of 114,196,753 Core & Main shares in the last 24 months for a total of $4,005,687,691.97 sold. Which members of congress are trading Core & Main? April McClain Delaney (D-MD) has bought shares of Core & Main in the last year totaling $16,000. Core & Main Key ExecutivesMr. Stephen O. LeClair (Age 55)Chair & Chief Executive Officer Compensation: $2.59M2 recent tradesMr. John R. Schaller (Age 68)President Compensation: $1.04M2 recent tradesMr. Bradford A. Cowles (Age 53)President Compensation: $925.99kMr. Mark R. Witkowski (Age 48)Chief Financial Officer Compensation: $1.27M1 recent tradesMr. Mark G. Whittenburg (Age 56)General Counsel & Secretary Compensation: $1.1M2 recent tradesMs. Carrie BusbeeChief Information OfficerMs. Robyn BradburyVice President of Finance & Investor Relations2 recent tradesJennifer NoonanDirector of Marketing & CommunicationsMr. Jeffrey D. GilesExecutive VP of Corporate DevelopmentMs. Yvonne BlandVice President of Sales & Business Development More Insider Trading Tools from MarketBeat Related Companies FERG Insider Selling USFD Insider Selling PFGC Insider Selling SITE Insider Selling AVT Insider Selling GMS Insider Selling REZI Insider Selling CENT Insider Selling GLP Insider Selling WKC Insider Selling Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles Strategy Insiders Buy In While Analysts Predict Big UpsideThe Bottom Is in For These 3 Small-Cap Stocks Insiders Are Buying3 Catalysts Driving Plug Power’s Turnaround CaseInsider Selling Hits Market Leaders—Should You Be Worried?Insiders Spent Millions on These 3 Stocks Over the Past 2 Months This page (NYSE:CNM) was last updated on 8/10/2025 by MarketBeat.com Staff From Our PartnersGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. 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