Core & Main, Inc. (CNM)

Latest Insider Confidence Score

2026Q1

48.2
Bearish

Company insider confidence (by quarter)

2021Q3 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Core & Main Management Feeder, LLC 10% Owner 119,170,404 Aug 19, 2021
CD&R Investment Associates X, Ltd. 10% Owner 1,874,272 Jan 25, 2024
CD&R Fund X Waterworks B1, L.P. 10% Owner 1,874,272 Jan 25, 2024
CD&R Fund X-A Waterworks B, L.P. 10% Owner 1,874,272 Jan 25, 2024
CD&R Waterworks Holdings, L.P. 10% Owner 1,874,272 Jan 25, 2024

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Jan 26, 2026 Jan 28, 2026 Giles Jeffrey D EVP, Corporate Development Neutral 90.0 +4,377 191.72% ✗ -
Jan 28, 2026 Giles Jeffrey D EVP, Corporate Development Neutral 52.5 - 0.00% ✗ -
Dec 31, 2025 Jan 2, 2026 Whittenburg Mark G General Counsel and Secretary Neutral 52.5 - 0.00% ✗ -
Sep 12, 2025 Sep 16, 2025 Stephens John Weldon Chief Accounting Officer Neutral 52.5 - 0.00% ✗ -
Sep 3, 2025 Sep 5, 2025 Harper Carla D Senior VP, Human Resources Neutral 90.0 +2,091 21.61% ✗ -
Sep 5, 2025 Harper Carla D Senior VP, Human Resources Neutral 52.5 - 0.00% ✗ -
Aug 18, 2025 Aug 20, 2025 Witkowski Mark R CEO Sell 3.8 -100,000 -73.61% ✓ $6.4M
Jul 22, 2025 Jul 23, 2025 HUEBERT MICHAEL G. President Sell 42.5 -1,337 -7.88% ✗ $86.9K
Jul 22, 2025 Jul 23, 2025 Bradbury Robyn L CFO Sell 7.5 -5,000 -36.83% ✓ $322.6K
Jul 18, 2025 Jul 21, 2025 Castellano James G Director Sell 5.0 -43,994 -90.46% ✓ $2.7M
Jul 18, 2025 Jul 21, 2025 Kimbrough Orvin T Director Sell 5.0 -23,962 -46.18% ✓ $1.5M
Jul 17, 2025 Jul 21, 2025 Witkowski Mark R CEO Sell 3.8 -100,000 -73.61% ✓ $6.1M
Jul 3, 2025 Jul 8, 2025 LeClair Stephen O Chair Sell 16.3 -125,000 -46.91% ✗ $7.8M
Jul 1, 2025 Jul 3, 2025 Bradbury Robyn L CFO Sell 5.0 -25,000 -35.09% ✓ $1.5M
Jun 24, 2025 Jun 26, 2025 Castellano James G Director Neutral 90.0 +2,189 18.60% ✗ -
Jun 24, 2025 Jun 26, 2025 NEWMAN MARGARET Director Neutral 90.0 +2,189 18.60% ✗ -
Jun 24, 2025 Jun 26, 2025 Gipson Dennis G Director Neutral 90.0 +2,189 18.60% ✗ -
Jun 24, 2025 Jun 26, 2025 Kimbrough Orvin T Director Neutral 90.0 +2,189 18.59% ✗ -
Jun 24, 2025 Jun 26, 2025 Buck Robert M Director Neutral 90.0 +2,189 20.15% ✗ -
Jun 24, 2025 Jun 26, 2025 Amirthalingam Bhavani Director Neutral 90.0 +2,189 16.88% ✗ -
Jun 24, 2025 Jun 26, 2025 Hope James D Director Neutral 90.0 +2,189 78.80% ✗ -
Jun 24, 2025 Jun 26, 2025 MAZZARELLA KATHLEEN M Director Neutral 90.0 +2,189 18.47% ✗ -
Jun 6, 2025 Jun 10, 2025 Whittenburg Mark G General Counsel and Secretary Sell 5.0 -50,000 -72.06% ✓ $3M
Jun 3, 2025 Jun 5, 2025 Schneider Laura K Chief Human Resources Officer Sell 5.0 -45,695 -78.02% ✓ $2.6M
May 28, 2025 May 30, 2025 Schaller John R President Sell 7.5 -9,794 -33.22% ✓ $538.7K
Apr 28, 2025 Apr 30, 2025 Stephens John Weldon Chief Accounting Officer Sell 5.0 -41,964 -83.59% ✓ $2.2M
Apr 17, 2025 Apr 22, 2025 Castellano James G Director Neutral 52.5 - 0.00% ✗ -
Apr 17, 2025 Apr 21, 2025 Castellano James G Director Neutral 52.5 - 0.00% ✗ -
Apr 2, 2025 Apr 4, 2025 Stephens John Weldon Chief Accounting Officer Sell 5.0 -41,963 -91.06% ✓ $2.1M
Mar 31, 2025 Apr 2, 2025 Bradbury Robyn L CFO Neutral 90.0 +2,913 51.04% ✗ -
Mar 31, 2025 Apr 2, 2025 Witkowski Mark R CEO Neutral 90.0 +10,092 39.18% ✗ -
Apr 2, 2025 Bradbury Robyn L CFO Neutral 52.5 - 0.00% ✗ -
Mar 13, 2025 Mar 17, 2025 Whittenburg Mark G General Counsel and Secretary Neutral 90.0 +3,411 54.32% ✗ -
Mar 13, 2025 Mar 17, 2025 Giles Jeffrey D EVP, Corporate Department Neutral 90.0 +2,988 32.85% ✗ -
Mar 13, 2025 Mar 17, 2025 Schneider Laura K Chief Human Resources Officer Neutral 90.0 +3,276 34.14% ✗ -
Mar 13, 2025 Mar 17, 2025 Witkowski Mark R CFO Neutral 90.0 +7,296 39.53% ✗ -
Mar 13, 2025 Mar 17, 2025 Cowles Bradford A President Neutral 90.0 +6,162 43.93% ✗ -
Mar 13, 2025 Mar 17, 2025 Schaller John R President Neutral 90.0 +4,215 27.24% ✗ -
Mar 13, 2025 Mar 17, 2025 Stephens John Weldon Chief Accounting Officer Neutral 90.0 +933 29.28% ✗ -
Mar 13, 2025 Mar 17, 2025 HUEBERT MICHAEL G. President Neutral 90.0 +4,494 36.02% ✗ -
Mar 11, 2025 Mar 13, 2025 Schneider Laura K Chief Human Resources Officer Sell 46.3 -434 -4.33% ✗ $20.2K
Mar 11, 2025 Mar 13, 2025 Cowles Bradford A President Sell 46.3 -724 -4.91% ✗ $33.7K
Mar 11, 2025 Mar 13, 2025 Schaller John R President Sell 7.5 -20,270 -39.58% ✓ $913.7K
Mar 11, 2025 Mar 13, 2025 Giles Jeffrey D EVP, Corporate Department Sell 46.3 -436 -4.57% ✗ $20.3K
Mar 11, 2025 Mar 13, 2025 Stephens John Weldon Chief Accounting Officer Sell 47.5 -200 -5.90% ✗ $9.3K
Mar 11, 2025 Mar 13, 2025 Witkowski Mark R CFO Sell 46.3 -925 -4.77% ✗ $43.1K
Mar 11, 2025 Mar 13, 2025 Whittenburg Mark G General Counsel and Secretary Sell 46.3 -510 -7.51% ✗ $23.7K
Mar 11, 2025 Mar 13, 2025 LeClair Stephen O CEO Sell 42.5 -4,889 -6.46% ✗ $227.6K
Mar 7, 2025 Mar 11, 2025 LeClair Stephen O CEO Sell 40.0 -5,512 -6.79% ✗ $259.5K
Mar 7, 2025 Mar 11, 2025 Giles Jeffrey D EVP, Corporate Department Sell 46.3 -702 -6.86% ✗ $33.1K
Mar 7, 2025 Mar 11, 2025 Whittenburg Mark G General Counsel and Secretary Sell 46.3 -877 -11.44% ✗ $41.3K
Mar 7, 2025 Mar 11, 2025 Witkowski Mark R CFO Sell 42.5 -1,532 -7.32% ✗ $72.2K
Mar 7, 2025 Mar 11, 2025 Schaller John R President Sell 5.0 -23,314 -31.65% ✓ $1.1M
Mar 7, 2025 Mar 11, 2025 HUEBERT MICHAEL G. President Sell 46.3 -359 -2.80% ✗ $17.2K
Mar 7, 2025 Mar 11, 2025 Stephens John Weldon Chief Accounting Officer Sell 46.3 -292 -7.94% ✗ $13.7K
Mar 7, 2025 Mar 11, 2025 Schneider Laura K Chief Human Resources Officer Sell 46.3 -633 -5.94% ✗ $29.8K
Mar 7, 2025 Mar 11, 2025 Cowles Bradford A President Sell 42.5 -1,260 -7.87% ✗ $59.3K
Feb 10, 2025 Feb 12, 2025 Cowles Bradford A President Sell 5.0 -25,000 -60.96% ✓ $1.4M
Jan 15, 2025 Jan 17, 2025 Whittenburg Mark G General Counsel and Secretary Sell 5.0 -50,000 -76.53% ✓ $2.8M
Mar 13, 2023 Jan 17, 2025 Giles Jeffrey D EVP, Corporate Department Sell 42.5 -1,382 -11.90% ✗ $53.9K
Mar 13, 2023 Jan 17, 2025 Stephens John Weldon Chief Accounting Officer Sell 46.3 -602 -14.06% ✗ $23.6K
Mar 13, 2023 Jan 17, 2025 Witkowski Mark R CFO Sell 42.5 -2,982 -12.48% ✗ $115.7K
Mar 13, 2023 Jan 17, 2025 Schneider Laura K Chief Human Resources Officer Sell 42.5 -1,303 -10.89% ✗ $51.2K
Mar 13, 2023 Jan 17, 2025 LeClair Stephen O CEO Sell 40.0 -11,212 -12.14% ✗ $448.1K
Mar 13, 2023 Jan 14, 2025 Whittenburg Mark G General Counsel and Secretary Sell 5.0 -51,718 -54.64% ✓ $2.6M
Mar 13, 2023 Jan 14, 2025 Schaller John R President Sell 5.0 -62,201 -36.18% ✓ $3.1M
Mar 13, 2023 Jan 14, 2025 Cowles Bradford A President Sell 10.0 -27,413 -24.98% ✓ $1.4M
Dec 3, 2024 Dec 5, 2024 Giles Jeffrey D EVP, Corporate Department Sell 5.0 -25,000 -49.05% ✓ $1.4M
Dec 3, 2024 Dec 5, 2024 Cowles Bradford A President Sell 5.0 -50,000 -73.07% ✓ $2.8M
Dec 3, 2024 Dec 5, 2024 NEWMAN MARGARET Director Sell 7.5 -15,000 -38.89% ✓ $828.7K
Dec 3, 2024 Dec 5, 2024 LeClair Stephen O CEO Sell 2.5 -200,000 -68.41% ✓ $11M
Oct 8, 2024 Oct 10, 2024 Giles Jeffrey D EVP, Corporate Department Neutral 52.5 - 0.00% ✗ -
Jul 22, 2024 Jul 24, 2024 HUEBERT MICHAEL G. President Neutral 90.0 +12,836 100.00% ✗ -
Jul 24, 2024 HUEBERT MICHAEL G. President Neutral 52.5 - 0.00% ✗ -
Jul 16, 2024 Jul 18, 2024 Gipson Dennis G Director Sell 5.0 -25,000 -67.73% ✓ $1.3M
Jul 15, 2024 Jul 17, 2024 Castellano James G Director Sell 7.5 -12,500 -51.51% ✓ $652.8K
Jul 10, 2024 Jul 12, 2024 Castellano James G Director Sell 7.5 -12,500 -51.51% ✓ $633.6K
Jun 26, 2024 Jun 28, 2024 Amirthalingam Bhavani Director Neutral 90.0 +2,449 23.28% ✗ -
Jun 26, 2024 Jun 28, 2024 Hope James D Director Neutral 90.0 +2,449 744.38% ✗ -
Jun 26, 2024 Jun 28, 2024 Gipson Dennis G Director Neutral 90.0 +2,449 25.88% ✗ -
Jun 26, 2024 Jun 28, 2024 MAZZARELLA KATHLEEN M Director Neutral 90.0 +2,449 26.05% ✗ -
Jun 26, 2024 Jun 28, 2024 Kimbrough Orvin T Director Neutral 90.0 +2,449 26.25% ✗ -
Jun 26, 2024 Jun 28, 2024 Buck Robert M Director Neutral 90.0 +2,449 29.11% ✗ -
Jun 26, 2024 Jun 28, 2024 NEWMAN MARGARET Director Neutral 90.0 +2,449 26.19% ✗ -
Jun 26, 2024 Jun 28, 2024 Castellano James G Director Neutral 90.0 +2,449 26.28% ✗ -
May 8, 2024 May 10, 2024 Witkowski Mark R CFO Sell 5.0 -50,000 -67.66% ✓ $3M
May 3, 2024 Hope James D Director Neutral 52.5 - 0.00% ✗ -
May 1, 2024 May 3, 2024 Hope James D Director Neutral 90.0 +329 100.00% ✗ -
Apr 23, 2024 Apr 24, 2024 Stephens John Weldon Chief Accounting Officer Sell 7.5 -9,497 -68.93% ✓ $524.1K
Apr 19, 2024 Apr 23, 2024 Whittenburg Mark G General Counsel and Secretary Sell 5.0 -50,000 -79.45% ✓ $2.7M
Apr 19, 2024 Apr 23, 2024 Stephens John Weldon Chief Accounting Officer Sell 7.5 -5,503 -56.24% ✓ $298.4K
Apr 8, 2024 Apr 10, 2024 Witkowski Mark R CFO Sell 5.0 -50,000 -67.66% ✓ $2.9M
Mar 22, 2024 Mar 26, 2024 Whittenburg Mark G General Counsel and Secretary Sell 5.0 -50,000 -65.85% ✓ $2.9M
Mar 22, 2024 Mar 26, 2024 Stephens John Weldon Chief Accounting Officer Sell 7.5 -15,000 -63.58% ✓ $868.7K
Mar 7, 2024 Mar 11, 2024 Whittenburg Mark G General Counsel and Secretary Neutral 90.0 +2,421 22.90% ✗ -
Mar 7, 2024 Mar 11, 2024 Stephens John Weldon VP, Corp. Controller Neutral 90.0 +813 23.23% ✗ -
Mar 7, 2024 Mar 11, 2024 Cowles Bradford A President Neutral 90.0 +3,744 25.51% ✗ -
Mar 7, 2024 Mar 11, 2024 Witkowski Mark R CFO Neutral 90.0 +4,677 24.33% ✗ -
Mar 7, 2024 Mar 11, 2024 Schneider Laura K Chief Human Resources Officer Neutral 90.0 +2,295 23.73% ✗ -
Mar 7, 2024 Mar 11, 2024 Schaller John R President Neutral 90.0 +3,744 23.54% ✗ -