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Core & Main, Inc.

CNM
Exchange
NYSE
Industry
Wholesale-Durable Goods, NEC
SEC CIK
0001856525

In the last 90 days, Core & Main, Inc. insiders filed 1 open-market purchase and 0 sales; 454 institutions reported holding it in 13F filings for Q2 2026, worth $9.68B in total; Soros Fund Management is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Core & Main, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
1 filing
1 insider, $95.1K in total
Open-market sells
0 filings
Insiders trading
1
Net value
+$95.1K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Core & Main, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Core & Main, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Harper Carla DSenior VP, Human Resources13,064Aug 5, 20264
Huebert Michael G.President24,036Jul 23, 20263
Hope James DDirector11,805Jul 8, 20263
Mazzarella Kathleen MDirector16,757Jun 24, 20261
Newman MargaretDirector16,757Jun 24, 20261
Hardwick M SusanDirector3,379Jun 24, 20262
Buck Robert MDirector15,849Jun 24, 20261
Amirthalingam BhavaniDirector17,955Jun 24, 20261
Gipson Dennis GDirector16,757Jun 24, 20261
Castellano James GDirector7,437Jun 24, 20261
Kimbrough Orvin TDirector16,757Jun 24, 20261
Bradbury Robyn LChief Financial Officer12,500Apr 21, 20263
Cowles Bradford APresident25,491Mar 13, 20262
Giles Jeffrey DEVP, Corporate Development9,681Mar 13, 20262
Whittenburg Mark GGeneral Counsel and Secretary8,525Mar 13, 20263
Witkowski Mark RChief Executive Officer51,119Mar 13, 20262
Stephens John WeldonChief Accounting Officer17,374Mar 13, 20262
LeClair Stephen OExecutive Chair66,136Mar 11, 20261
Schneider Laura KChief Human Resources Officer12,873Jun 5, 20250
Schaller John RExecutive Vice President19,689May 30, 20250
CD&R Investment Associates X, Ltd.10% Owner0IndirectJan 25, 20240
CD&R Waterworks Holdings, L.P.10% Owner0IndirectJan 25, 20240
CD&R Waterworks Holdings GP, Ltd.10% Owner0IndirectJan 25, 20240
CD&R Fund X-A Waterworks B, L.P.10% Owner0IndirectJan 25, 20240
CD&R Fund X Waterworks B1, L.P.10% Owner0IndirectJan 25, 20240
CD&R Fund X Advisor Waterworks B, L.P.10% Owner0IndirectJan 25, 20240
CD&R Waterworks Holdings, LLC10% Owner0IndirectJan 25, 20240
Sleeper Nathan KDirector0Jan 11, 20240
Core & Main Management Feeder, LLC10% Owner0IndirectJan 12, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 8, 2026 (view filing)5:36 PM ETJul 62 daysHope James DDirectorPPurchaseClass A Common Stock+2.07K$46.01+$95.1K+21.2%11.8K after
Apr 21, 2026 (view filing)Apr 174 daysBradbury Robyn LChief Financial OfficerSSaleClass A Common Stock−5.00K$52.54−$262.7K−28.6%12.5K after2 lots10b5-1
Apr 9, 2026 (view filing)Apr 72 daysHope James DDirectorPPurchaseClass A Common Stock+1.97K$50.70+$100.0K+39.7%6.94K after
Aug 20, 2025 (view filing)Aug 182 daysWitkowski Mark RChief Executive OfficerSSaleClass A Common Stock−100.0K$64.08−$6.41M−73.6%35.8K after10b5-1
Jul 23, 2025 (view filing)Jul 221 dayBradbury Robyn LChief Financial OfficerSSaleClass A Common Stock−5.00K$64.51−$322.6K−36.9%8.55K after10b5-1
Jul 21, 2025 (view filing)Jul 183 daysCastellano James GDirectorSSaleClass A Common Stock−44.0K$61.98−$2.73M−100.0%0 after10b5-1
Jul 21, 2025 (view filing)Jul 183 daysKimbrough Orvin TDirectorSSaleClass A Common Stock−24.0K$61.77−$1.48M−63.2%14.0K after10b5-1
Jul 21, 2025 (view filing)Jul 174 daysWitkowski Mark RChief Executive OfficerSSaleClass A Common Stock−100.0K$61.26−$6.13M−73.6%35.8K after2 lots10b5-1
Jul 8, 2025 (view filing)Jul 3-75 daysLeClair Stephen OExecutive ChairSSaleClass A Common Stock−125.0K$62.14−$7.77M−63.9%70.7K after2 lots
Jul 3, 2025 (view filing)Jul 12 daysBradbury Robyn LChief Financial OfficerSSaleClass A Common Stock−25.0K$60.49−$1.51M−74.5%8.55K after3 lots10b5-1
Jun 10, 2025 (view filing)Jun 6-94 daysWhittenburg Mark GGeneral Counsel and SecretarySSaleClass A Common Stock−50.0K$60.03−$3.00M−83.8%9.69K after2 lots10b5-1
Jun 5, 2025 (view filing)Jun 32 daysSchneider Laura KChief Human Resources OfficerSSaleClass A Common Stock−45.7K$56.25−$2.57M−78.0%12.9K after10b5-1
May 30, 2025 (view filing)May 282 daysSchaller John RExecutive Vice PresidentSSaleClass A Common Stock−9.79K$55.00−$538.7K−33.2%19.7K after10b5-1
Apr 30, 2025 (view filing)Apr 28-292 daysStephens John WeldonChief Accounting OfficerSSaleClass A Common Stock−42.0K$53.03−$2.23M−91.1%4.12K after2 lots10b5-1
Apr 4, 2025 (view filing)Apr 22 daysStephens John WeldonChief Accounting OfficerSSaleClass A Common Stock−42.0K$50.48−$2.12M−91.1%4.12K after10b5-1
Mar 13, 2025 (view filing)Mar 112 daysSchaller John RExecutive Vice PresidentSSaleClass A Common Stock−19.3K$45.00−$868.1K−55.5%15.5K after10b5-1
Mar 11, 2025 (view filing)Mar 101 daySchaller John RExecutive Vice PresidentSSaleClass A Common Stock−21.9K$46.82−$1.02M−57.1%16.5K after10b5-1
Feb 12, 2025 (view filing)Feb 102 daysCowles Bradford APresidentSSaleClass A Common Stock−25.0K$54.48−$1.36M−61.0%16.0K after10b5-1
Jan 17, 2025 (view filing)Jan 15-162 daysWhittenburg Mark GGeneral Counsel and SecretarySSaleClass A Common Stock−50.0K$55.14−$2.76M−86.7%7.67K after2 lots10b5-1
Jan 14, 2025 (view filing)Jan 104 daysWhittenburg Mark GGeneral Counsel and SecretarySSaleClass A Common Stock−50.0K$50.49−$2.52M−86.7%7.67K after10b5-1
Jan 14, 2025 (view filing)Jan 104 daysSchaller John RExecutive Vice PresidentSSaleClass A Common Stock−60.5K$50.57−$3.06M−77.2%17.9K after3 lots10b5-1
Jan 14, 2025 (view filing)Jan 10-144 daysCowles Bradford APresidentSSaleClass A Common Stock−25.0K$52.29−$1.31M−61.0%16.0K after2 lots10b5-1
Dec 5, 2024 (view filing)Dec 32 daysGiles Jeffrey DEVP, Corporate DepartmentSSaleClass A Common Stock−25.0K$54.71−$1.37M−68.3%11.6K after10b5-1
Dec 5, 2024 (view filing)Dec 32 daysCowles Bradford APresidentSSaleClass A Common Stock−50.0K$55.07−$2.75M−73.1%18.4K after10b5-1
Dec 5, 2024 (view filing)Dec 32 daysNewman MargaretDirectorSSaleClass A Common Stock−15.0K$55.25−$828.8K−56.0%11.8K after10b5-1
Dec 5, 2024 (view filing)Dec 32 daysLeClair Stephen OChief Executive OfficerSSaleClass A Common Stock−200.0K$54.88−$11.0M−68.4%92.3K after10b5-1
Jul 18, 2024 (view filing)Jul 162 daysGipson Dennis GDirectorSSaleClass A Common Stock−25.0K$53.08−$1.33M−100.0%0 after10b5-1
Jul 17, 2024 (view filing)Jul 152 daysCastellano James GDirectorSSaleClass A Common Stock−12.5K$52.22−$652.8K−100.0%0 after10b5-1
Jul 12, 2024 (view filing)Jul 10-112 daysCastellano James GDirectorSSaleClass A Common Stock−12.5K$50.69−$633.6K−100.0%0 after2 lots10b5-1
May 10, 2024 (view filing)May 82 daysWitkowski Mark RChief Financial OfficerSSaleClass A Common Stock−50.0K$59.50−$2.98M−67.7%23.9K after10b5-1
Apr 24, 2024 (view filing)Apr 231 dayStephens John WeldonChief Accounting OfficerSSaleClass A Common Stock−9.50K$55.19−$524.1K−68.9%4.28K after10b5-1
Apr 23, 2024 (view filing)Apr 194 daysWhittenburg Mark GGeneral Counsel and SecretarySSaleClass A Common Stock−50.0K$54.08−$2.70M−79.4%12.9K after10b5-1
Apr 23, 2024 (view filing)Apr 194 daysStephens John WeldonChief Accounting OfficerSSaleClass A Common Stock−5.50K$54.23−$298.4K−56.2%4.28K after10b5-1
Apr 10, 2024 (view filing)Apr 82 daysWitkowski Mark RChief Financial OfficerSSaleClass A Common Stock−50.0K$58.51−$2.93M−67.7%23.9K after10b5-1
Mar 26, 2024 (view filing)Mar 224 daysWhittenburg Mark GGeneral Counsel and SecretarySSaleClass A Common Stock−50.0K$57.91−$2.90M−79.4%12.9K after
Mar 26, 2024 (view filing)Mar 224 daysStephens John WeldonChief Accounting OfficerSSaleClass A Common Stock−15.0K$57.91−$868.6K−77.8%4.28K after10b5-1
Mar 11, 2024 (view filing)Mar 74 daysStephens John WeldonVP, Corp. ControllerSSaleClass A Common Stock−43.9K$50.02−$2.20M−92.7%3.47K after10b5-1
Mar 6, 2024 (view filing)Mar 42 daysStephens John WeldonVP, Corp. ControllerSSaleClass A Common Stock−1.10K$50.02−$55.0K−24.1%3.47K after10b5-1
Feb 26, 2024 (view filing)Feb 224 daysKimbrough Orvin TDirectorSSaleClass A Common Stock−9.50K$45.28−$430.2K−50.5%9.32K after10b5-1
Feb 21, 2024 (view filing)Feb 16-215 daysKimbrough Orvin TDirectorSSaleClass A Common Stock−500$45.00−$22.5K−5.1%9.32K after2 lots10b5-1
Feb 14, 2024 (view filing)Feb 122 daysLeClair Stephen OChief Executive OfficerSSaleClass A Common Stock−150.0K$44.14−$6.62M−67.1%73.7K after10b5-1
Feb 14, 2024 (view filing)Feb 122 daysGiles Jeffrey DVP, Corporate DepartmentSSaleClass A Common Stock−40.0K$44.14−$1.77M−83.0%8.22K after10b5-1
Feb 14, 2024 (view filing)Feb 122 daysSchneider Laura KChief Human Resources OfficerSSaleClass A Common Stock−100.0K$44.14−$4.41M−91.2%9.67K after10b5-1
Feb 14, 2024 (view filing)Feb 122 daysKimbrough Orvin TDirectorSSaleClass A Common Stock−5.00K$44.17−$220.8K−34.9%9.32K after10b5-1
Jan 25, 2024 (view filing)5:25 PM ETJan 25Same dayCD&R Investment Associates X, Ltd. and 6 others10% OwnerSSaleClass A Common Stock−22.9M$40.99−$938.9M−100.0%0 after7 lots
Jan 25, 2024 (view filing)5:25 PM ETJan 25Same dayCD&R Investment Associates X, Ltd. and 6 others10% OwnerSSaleClass A Common Stock−1.87M$38.12−$71.4M–0 afterDerivative
Jan 18, 2024 (view filing)Jan 162 daysSchaller John RPresidentSSaleClass A Common Stock−50.0K$40.99−$2.05M−100.0%0 after10b5-1
Jan 17, 2024 (view filing)Jan 125 daysKimbrough Orvin TDirectorSSaleClass A Common Stock−5.00K$41.06−$205.3K−34.9%9.32K after10b5-1
Jan 16, 2024 (view filing)Jan 115 daysSchneider Laura KChief Human Resources OfficerSSaleClass A Common Stock−100.0K$40.63−$4.06M−91.2%9.67K after10b5-1
Jan 16, 2024 (view filing)Jan 115 daysLeClair Stephen OChief Executive OfficerSSaleClass A Common Stock−150.0K$40.66−$6.10M−67.1%73.7K after10b5-1