Core & Main Inc. (CNM) - Insider Trading & Ownership

Real time insider trading transaction history:

  • Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
  • Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
Time period
Insider Trading Transactions for Core & Main Inc.
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Common stock purchase or sale:
Transaction
Date
Reported
DateTime
CompanySymbolInsider
Relationship
Shares
Traded
Average
Price
Total
Amount
Shares
Owned
Filing
2025-08-18
Sale
2025-08-20
4:53 pm
Core & Main Inc.CNMWitkowski Mark R
Chief Executive Officer
100,000$64.08$6,408,210752,097
(Indirect
Direct)
View
2025-07-22
Sale
2025-07-23
5:18 pm
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
5,000$64.51$322,551171,024
(Indirect
Direct)
View
2025-07-18
Sale
2025-07-21
6:42 pm
Core & Main Inc.CNMCastellano James G
Director
43,994$61.98$2,726,783198,258
(Indirect
Direct)
View
2025-07-18
Sale
2025-07-21
5:38 pm
Core & Main Inc.CNMKimbrough Orvin T
Director
23,962$61.77$1,480,09496,384
(Indirect
Direct)
View
2025-07-17
Sale
2025-07-21
5:37 pm
Core & Main Inc.CNMWitkowski Mark R
Chief Executive Officer
100,000$61.26$6,126,388852,097
(Indirect
Direct)
View
2025-07-03
Sale
2025-07-08
6:06 pm
Core & Main Inc.CNMLeClair Stephen O
Executive Chair
125,000$62.14$7,767,601387,462
(Direct)
View
2025-07-01
Sale
2025-07-03
6:50 pm
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
25,000$60.49$1,512,283196,067
(Indirect
Direct)
View
2025-06-06
Sale
2025-06-10
7:23 pm
Core & Main Inc.CNMWhittenburg Mark G
General Counsel and Secretary
50,000$60.03$3,001,255614,415
(Indirect
Direct)
View
2025-06-03
Sale
2025-06-05
5:38 pm
Core & Main Inc.CNMSchneider Laura K
Chief Human Resources Officer
45,695$56.25$2,570,2931,000,729
(Indirect
Direct)
View
2025-05-28
Sale
2025-05-30
5:32 pm
Core & Main Inc.CNMSchaller John R
Executive Vice President
9,794$55$538,67039,277
(Direct)
View
2025-04-28
Sale
2025-04-30
4:49 pm
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
41,964$53.03$2,225,371237,834
(Indirect
Direct)
View
2025-04-02
Sale
2025-04-04
4:28 pm
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
41,963$50.48$2,118,460294,096
(Indirect
Direct)
View
2025-03-11
Sale
2025-03-13
5:12 pm
Core & Main Inc.CNMSchaller John R
Executive Vice President
19,292$45$868,14015,474
(Direct)
View

Stock options: Exercise, Award, Grant, Conversion
Transaction
Date
Reported
DateTime
Exercisable
Expiration
CompanySymnbolInsider
Relationship
Shares
Traded
Conversion
Price
Shares
Owned
Filing
2025-09-12
Exercise
2025-09-16
5:08 pm
N/A
2032-03-10
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
12,717$016,837
(Direct)
View
2025-09-12
Exercise
2025-09-16
5:08 pm
N/A
N/A
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
12,717$20.8116,837
(Direct)
View
2025-09-03
Option Award
2025-09-05
4:18 pm
N/A
N/A
Core & Main Inc.CNMHarper Carla D
Senior VP, Human Resources
2,091$011,766
(Direct)
View

Ownership
2025-09-05
4:17 pm
N/A
N/A
Core & Main Inc.CNMHarper Carla D
Senior VP, Human Resources
0$025,479
(Direct)
View
2025-08-18
Conversion
2025-08-20
4:53 pm
N/A
N/A
Core & Main Inc.CNMWitkowski Mark R
Chief Executive Officer
100,000$0752,097
(Direct)
View
2025-08-18
Other
2025-08-20
4:53 pm
N/A
N/A
Core & Main Inc.CNMWitkowski Mark R
Chief Executive Officer
200,000$0752,097
(Indirect)
View
2025-07-22
Tax Withholding
2025-07-23
5:21 pm
N/A
N/A
Core & Main Inc.CNMHUEBERT MICHAEL G.
President
1,337$65.0315,634
(Direct)
View
2025-07-22
Conversion
2025-07-23
5:18 pm
N/A
N/A
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
5,000$0171,024
(Direct)
View
2025-07-22
Other
2025-07-23
5:18 pm
N/A
N/A
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
10,000$0171,024
(Indirect)
View
2025-07-18
Conversion
2025-07-21
6:42 pm
N/A
N/A
Core & Main Inc.CNMCastellano James G
Director
34,674$0198,258
(Indirect)
View
2025-07-18
Other
2025-07-21
6:42 pm
N/A
N/A
Core & Main Inc.CNMCastellano James G
Director
69,348$0198,258
(Indirect)
View
2025-07-18
Conversion
2025-07-21
5:38 pm
N/A
N/A
Core & Main Inc.CNMKimbrough Orvin T
Director
23,957$096,384
(Direct)
View
2025-07-18
Other
2025-07-21
5:38 pm
N/A
N/A
Core & Main Inc.CNMKimbrough Orvin T
Director
47,919$096,384
(Indirect)
View
2025-07-18
Tax Withholding
2025-07-21
5:38 pm
N/A
N/A
Core & Main Inc.CNMKimbrough Orvin T
Director
1,038$096,384
(Indirect)
View
2025-07-17
Conversion
2025-07-21
5:37 pm
N/A
N/A
Core & Main Inc.CNMWitkowski Mark R
Chief Executive Officer
100,000$0852,097
(Direct)
View
2025-07-17
Other
2025-07-21
5:37 pm
N/A
N/A
Core & Main Inc.CNMWitkowski Mark R
Chief Executive Officer
200,000$0852,097
(Indirect)
View
2025-07-03
Exercise
2025-07-08
6:06 pm
N/A
2032-03-10
Core & Main Inc.CNMLeClair Stephen O
Executive Chair
125,000$0387,462
(Direct)
View
2025-07-03
Exercise
2025-07-08
6:06 pm
N/A
N/A
Core & Main Inc.CNMLeClair Stephen O
Executive Chair
125,000$20.81387,462
(Direct)
View
2025-07-01
Conversion
2025-07-03
6:50 pm
N/A
N/A
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
24,957$0196,067
(Direct)
View
2025-07-01
Other
2025-07-03
6:50 pm
N/A
N/A
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
49,957$0196,067
(Indirect)
View
2025-06-24
Option Award
2025-06-26
4:29 pm
N/A
N/A
Core & Main Inc.CNMCastellano James G
Director
2,189$013,958
(Direct)
View
2025-06-24
Option Award
2025-06-26
4:29 pm
N/A
N/A
Core & Main Inc.CNMNEWMAN MARGARET
Director
2,189$013,958
(Direct)
View
2025-06-24
Option Award
2025-06-26
4:29 pm
N/A
N/A
Core & Main Inc.CNMGipson Dennis G
Director
2,189$013,958
(Direct)
View
2025-06-24
Option Award
2025-06-26
4:29 pm
N/A
N/A
Core & Main Inc.CNMKimbrough Orvin T
Director
2,189$013,966
(Direct)
View
2025-06-24
Option Award
2025-06-26
4:29 pm
N/A
N/A
Core & Main Inc.CNMBuck Robert M
Director
2,189$013,050
(Direct)
View
2025-06-24
Option Award
2025-06-26
4:29 pm
N/A
N/A
Core & Main Inc.CNMAmirthalingam Bhavani
Director
2,189$015,156
(Direct)
View
2025-06-24
Option Award
2025-06-26
4:28 pm
N/A
N/A
Core & Main Inc.CNMHope James D
Director
2,189$04,967
(Direct)
View
2025-06-24
Option Award
2025-06-26
4:27 pm
N/A
N/A
Core & Main Inc.CNMMAZZARELLA KATHLEEN M
Director
2,189$014,040
(Direct)
View
2025-06-06
Conversion
2025-06-10
7:23 pm
N/A
N/A
Core & Main Inc.CNMWhittenburg Mark G
General Counsel and Secretary
50,000$0614,415
(Direct)
View
2025-06-06
Other
2025-06-10
7:23 pm
N/A
N/A
Core & Main Inc.CNMWhittenburg Mark G
General Counsel and Secretary
100,000$0614,415
(Indirect)
View
2025-06-03
Conversion
2025-06-05
5:38 pm
N/A
N/A
Core & Main Inc.CNMSchneider Laura K
Chief Human Resources Officer
45,695$01,000,729
(Direct)
View
2025-06-03
Other
2025-06-05
5:38 pm
N/A
N/A
Core & Main Inc.CNMSchneider Laura K
Chief Human Resources Officer
91,390$01,000,729
(Indirect)
View
2025-06-03
Tax Withholding
2025-06-05
5:38 pm
N/A
N/A
Core & Main Inc.CNMSchneider Laura K
Chief Human Resources Officer
4,305$01,000,729
(Indirect)
View
2025-05-28
Exercise
2025-05-30
5:32 pm
N/A
2034-03-07
Core & Main Inc.CNMSchaller John R
Executive Vice President
9,794$039,277
(Direct)
View
2025-05-28
Exercise
2025-05-30
5:32 pm
N/A
N/A
Core & Main Inc.CNMSchaller John R
Executive Vice President
9,794$50.1239,277
(Direct)
View
2025-04-28
Conversion
2025-04-30
4:49 pm
N/A
N/A
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
41,964$0237,834
(Direct)
View
2025-04-28
Other
2025-04-30
4:49 pm
N/A
N/A
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
83,928$0237,834
(Indirect)
View
2025-04-17
Gift(A)
2025-04-22
7:38 pm
N/A
N/A
Core & Main Inc.CNMCastellano James G
Director
9,320$011,769
(Direct)
View
2025-04-17
Gift
2025-04-21
5:05 pm
N/A
N/A
Core & Main Inc.CNMCastellano James G
Director
9,320$011,769
(Direct)
View
2025-04-02
Conversion
2025-04-04
4:28 pm
N/A
N/A
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
41,963$0294,096
(Direct)
View
2025-04-02
Other
2025-04-04
4:28 pm
N/A
N/A
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
83,926$0294,096
(Indirect)
View
2025-04-02
Tax Withholding
2025-04-04
4:28 pm
N/A
N/A
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
4,085$0294,096
(Indirect)
View
2025-03-31
Option Award
2025-04-02
6:31 pm
N/A
2035-03-31
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
24,105$029,812
(Direct)
View
2025-03-31
Option Award
2025-04-02
6:31 pm
N/A
2035-03-31
Core & Main Inc.CNMWitkowski Mark R
Chief Executive Officer
83,550$0109,305
(Direct)
View

Ownership
2025-04-02
6:28 pm
N/A
N/A
Core & Main Inc.CNMBradbury Robyn L
Chief Financial Officer
0$0221,305
(Indirect)
View
2025-03-13
Option Award
2025-03-17
8:50 pm
N/A
2035-03-13
Core & Main Inc.CNMWhittenburg Mark G
General Counsel and Secretary
28,239$034,519
(Direct)
View
2025-03-13
Option Award
2025-03-17
8:50 pm
N/A
2035-03-13
Core & Main Inc.CNMGiles Jeffrey D
EVP, Corporate Department
24,720$033,815
(Direct)
View
2025-03-13
Option Award
2025-03-17
8:49 pm
N/A
2035-03-13
Core & Main Inc.CNMSchneider Laura K
Chief Human Resources Officer
27,120$036,717
(Direct)
View
2025-03-13
Option Award
2025-03-17
8:49 pm
N/A
2035-03-13
Core & Main Inc.CNMWitkowski Mark R
Chief Financial Officer
60,390$078,849
(Direct)
View
2025-03-13
Option Award
2025-03-17
8:49 pm
N/A
2035-03-13
Core & Main Inc.CNMCowles Bradford A
President
50,997$065,023
(Direct)
View
2025-03-13
Option Award
2025-03-17
8:49 pm
N/A
2035-03-13
Core & Main Inc.CNMSchaller John R
Executive Vice President
34,893$050,367
(Direct)
View
2025-03-13
Option Award
2025-03-17
8:49 pm
N/A
2035-03-13
Core & Main Inc.CNMStephens John Weldon
Chief Accounting Officer
7,719$010,906
(Direct)
View
2025-03-13
Option Award
2025-03-17
8:49 pm
N/A
2035-03-13
Core & Main Inc.CNMHUEBERT MICHAEL G.
President
37,188$049,665
(Direct)
View
2025-03-11
Tax Withholding
2025-03-13
5:12 pm
N/A
N/A
Core & Main Inc.CNMSchneider Laura K
Chief Human Resources Officer
434$46.559,597
(Direct)
View
2025-03-11
Tax Withholding
2025-03-13
5:12 pm
N/A
N/A
Core & Main Inc.CNMCowles Bradford A
President
724$46.5514,026
(Direct)
View
2025-03-11
Exercise
2025-03-13
5:12 pm
N/A
2032-03-10
Core & Main Inc.CNMSchaller John R
Executive Vice President
19,292$015,474
(Direct)
View
2025-03-11
Exercise
2025-03-13
5:12 pm
N/A
N/A
Core & Main Inc.CNMSchaller John R
Executive Vice President
19,292$20.8115,474
(Direct)
View
2025-03-11
Tax Withholding
2025-03-13
5:12 pm
N/A
N/A
Core & Main Inc.CNMSchaller John R
Executive Vice President
978$46.5515,474
(Direct)
View
(A) Indicate amendment filing.
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