CNM
Core & Main Inc
NYSE: CNM · INDUSTRIALS · INDUSTRIAL DISTRIBUTION
$48.63
+8.38% today
Updated 2026-11-04
Market cap
$7.76B
P/E ratio
17.31
P/S ratio
1.01x
EPS (TTM)
$2.43
Dividend yield
—
52W range
$39 – $60
Volume
2.3M
Core & Main Inc (CNM) Insider transactions
Net insider activity
Net buying (127,562 shares)
Buy transactions
48
Sell transactions
51
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-16 | WITKOWSKI, MARK R | Director, Chief Executive Officer | G | 19,596 | — | — |
| 2026-08-04 | HARPER, CARLA D | Senior VP, Human Resources | Sale | 242 | $46.32 | $11209.44 |
| 2026-07-22 | HUEBERT, MICHAEL G. | President | Sale | 1,301 | $43.75 | $56918.75 |
| 2026-07-06 | HOPE, JAMES D | Director | Buy | 2,067 | $46.01 | $95110.94 |
| 2026-06-23 | NEWMAN, MARGARET | Director | Buy | 2,799 | — | — |
| 2026-06-23 | MAZZARELLA, KATHLEEN M | Director | Buy | 2,799 | — | — |
| 2026-06-23 | KIMBROUGH, ORVIN T | Director | Buy | 2,799 | — | — |
| 2026-06-23 | HOPE, JAMES D | Director | Buy | 2,799 | — | — |
| 2026-06-23 | HARDWICK, M SUSAN | Director | Buy | 2,799 | — | — |
| 2026-06-23 | GIPSON, DENNIS G | Director | Buy | 2,799 | — | — |
| 2026-06-23 | CASTELLANO, JAMES G | Director | Buy | 2,799 | — | — |
| 2026-06-23 | BUCK, ROBERT M | Director | Buy | 2,799 | — | — |
| 2026-06-23 | AMIRTHALINGAM, BHAVANI | Director | Buy | 2,799 | — | — |
| 2026-06-22 | HARPER, CARLA D | Senior VP, Human Resources | Sale | 568 | $47.25 | $26838.00 |
| 2026-04-17 | BRADBURY, ROBYN L | Chief Financial Officer | Buy | 5,000 | — | — |
| 2026-04-17 | BRADBURY, ROBYN L | Chief Financial Officer | Buy | 5,000 | — | — |
| 2026-04-17 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 3,353 | $52.84 | $177178.22 |
| 2026-04-17 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 1,647 | $51.94 | $85545.84 |
| 2026-04-07 | HOPE, JAMES D | Director | Buy | 1,972 | $50.70 | $99970.54 |
| 2026-04-01 | HARDWICK, M SUSAN | Director | Buy | 580 | — | — |
| 2026-03-12 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Buy | 131,382 | — | — |
| 2026-03-12 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Buy | 18,372 | — | — |
| 2026-03-12 | STEPHENS, JOHN WELDON | Chief Accounting Officer | Buy | 6,684 | — | — |
| 2026-03-12 | STEPHENS, JOHN WELDON | Chief Accounting Officer | Buy | 936 | — | — |
| 2026-03-12 | HUEBERT, MICHAEL G. | President | Buy | 37,539 | — | — |
| 2026-03-12 | HUEBERT, MICHAEL G. | President | Buy | 10,500 | — | — |
| 2026-03-12 | HARPER, CARLA D | Senior VP, Human Resources | Buy | 17,598 | — | — |
| 2026-03-12 | HARPER, CARLA D | Senior VP, Human Resources | Buy | 2,463 | — | — |
| 2026-03-12 | GILES, JEFFREY D | EVP, Corporate Development | Buy | 21,585 | — | — |
| 2026-03-12 | GILES, JEFFREY D | EVP, Corporate Development | Buy | 3,021 | — | — |
| 2026-03-12 | COWLES, BRADFORD A | President | Buy | 50,676 | — | — |
| 2026-03-12 | COWLES, BRADFORD A | President | Buy | 7,086 | — | — |
| 2026-03-12 | BRADBURY, ROBYN L | Chief Financial Officer | Buy | 34,488 | — | — |
| 2026-03-12 | BRADBURY, ROBYN L | Chief Financial Officer | Buy | 4,824 | — | — |
| 2026-03-11 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Sale | 1,685 | $49.16 | $82834.60 |
| 2026-03-11 | WHITTENBURG, MARK G | General Counsel and Secretary | Sale | 331 | $49.16 | $16271.96 |
| 2026-03-11 | STEPHENS, JOHN WELDON | Chief Accounting Officer | Sale | 107 | $49.16 | $5260.12 |
| 2026-03-11 | HUEBERT, MICHAEL G. | President | Sale | 447 | $49.16 | $21974.52 |
| 2026-03-11 | HARPER, CARLA D | Senior VP, Human Resources | Sale | 89 | $49.16 | $4375.24 |
| 2026-03-11 | COWLES, BRADFORD A | President | Sale | 607 | $49.16 | $29840.12 |
| 2026-03-11 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 404 | $49.16 | $19860.64 |
| 2026-03-10 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Sale | 937 | $49.38 | $46269.06 |
| 2026-03-10 | WHITTENBURG, MARK G | General Counsel and Secretary | Sale | 557 | $49.38 | $27504.66 |
| 2026-03-10 | STEPHENS, JOHN WELDON | Chief Accounting Officer | Sale | 198 | $49.38 | $9777.24 |
| 2026-03-10 | LECLAIR, STEPHEN O | Director, Executive Chair | Sale | 3,081 | $49.38 | $152139.78 |
| 2026-03-10 | HARPER, CARLA D | Senior VP, Human Resources | Sale | 189 | $49.38 | $9332.82 |
| 2026-03-10 | COWLES, BRADFORD A | President | Sale | 741 | $49.38 | $36590.58 |
| 2026-03-10 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 205 | $49.38 | $10122.90 |
| 2026-03-09 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Sale | 478 | $49.96 | $23880.88 |
| 2026-03-09 | WHITTENBURG, MARK G | General Counsel and Secretary | Sale | 278 | $49.96 | $13888.88 |
| 2026-03-09 | STEPHENS, JOHN WELDON | Chief Accounting Officer | Sale | 94 | $49.96 | $4696.24 |
| 2026-03-09 | LECLAIR, STEPHEN O | Director, Executive Chair | Sale | 1,519 | $49.96 | $75889.24 |
| 2026-03-09 | HUEBERT, MICHAEL G. | President | Sale | 350 | $49.96 | $17486.00 |
| 2026-03-09 | HARPER, CARLA D | Senior VP, Human Resources | Sale | 77 | $49.96 | $3846.92 |
| 2026-03-09 | COWLES, BRADFORD A | President | Sale | 435 | $49.96 | $21732.60 |
| 2026-03-09 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 270 | $49.96 | $13489.20 |
| 2026-01-26 | GILES, JEFFREY D | EVP, Corporate Development | Buy | 10,617 | — | — |
| 2026-01-26 | GILES, JEFFREY D | EVP, Corporate Development | Buy | 4,377 | — | — |
| 2025-12-31 | WHITTENBURG, MARK G | General Counsel and Secretary | Sale | 25,500 | — | — |
| 2025-09-12 | STEPHENS, JOHN WELDON | Chief Accounting Officer | Sale | 12,717 | — | — |
| 2025-09-12 | STEPHENS, JOHN WELDON | Chief Accounting Officer | Buy | 12,717 | $20.81 | $264640.77 |
| 2025-09-03 | HARPER, CARLA D | Senior VP, Human Resources | Buy | 2,091 | — | — |
| 2025-08-18 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Buy | 100,000 | — | — |
| 2025-08-18 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Sale | 100,000 | $64.08 | $6.41M |
| 2025-07-22 | HUEBERT, MICHAEL G. | President | Sale | 1,337 | $65.03 | $86945.11 |
| 2025-07-22 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 5,000 | — | — |
| 2025-07-22 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 5,000 | $64.51 | $322550.50 |
| 2025-07-18 | KIMBROUGH, ORVIN T | Director | Buy | 23,957 | — | — |
| 2025-07-18 | KIMBROUGH, ORVIN T | Director | Sale | 1,038 | — | — |
| 2025-07-18 | KIMBROUGH, ORVIN T | Director | Sale | 23,962 | $61.77 | $1.48M |
| 2025-07-18 | KIMBROUGH, ORVIN T | Director | Buy | 23,957 | — | — |
| 2025-07-18 | KIMBROUGH, ORVIN T | Director | Sale | 5 | — | — |
| 2025-07-18 | CASTELLANO, JAMES G | Director | Sale | 34,674 | — | — |
| 2025-07-18 | CASTELLANO, JAMES G | Director | Sale | 43,994 | $61.98 | $2.73M |
| 2025-07-18 | CASTELLANO, JAMES G | Director | Buy | 34,674 | — | — |
| 2025-07-17 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Sale | 100,000 | — | — |
| 2025-07-17 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Buy | 100,000 | — | — |
| 2025-07-17 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Sale | 72,331 | $61.12 | $4.42M |
| 2025-07-17 | WITKOWSKI, MARK R | Director, Chief Executive Officer | Sale | 27,669 | $61.63 | $1.71M |
| 2025-07-07 | LECLAIR, STEPHEN O | Director, Executive Chair | Sale | 44,972 | — | — |
| 2025-07-07 | LECLAIR, STEPHEN O | Director, Executive Chair | Sale | 44,972 | $61.91 | $2.78M |
| 2025-07-03 | LECLAIR, STEPHEN O | Director, Executive Chair | Sale | 80,028 | — | — |
| 2025-07-03 | LECLAIR, STEPHEN O | Director, Executive Chair | Buy | 80,028 | $20.81 | $1.67M |
| 2025-07-01 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 24,957 | — | — |
| 2025-07-01 | BRADBURY, ROBYN L | Chief Financial Officer | Buy | 24,957 | — | — |
| 2025-07-01 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 13,363 | $59.97 | $801322.99 |
| 2025-07-01 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 11,318 | $61.08 | $691317.02 |
| 2025-07-01 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 319 | $61.58 | $19643.09 |
| 2025-07-01 | BRADBURY, ROBYN L | Chief Financial Officer | Sale | 43 | — | — |
| 2025-06-24 | NEWMAN, MARGARET | Director | Buy | 2,189 | — | — |
| 2025-06-24 | MAZZARELLA, KATHLEEN M | Director | Buy | 2,189 | — | — |
| 2025-06-24 | KIMBROUGH, ORVIN T | Director | Buy | 2,189 | — | — |
| 2025-06-24 | HOPE, JAMES D | Director | Buy | 2,189 | — | — |
| 2025-06-24 | GIPSON, DENNIS G | Director | Buy | 2,189 | — | — |
| 2025-06-24 | CASTELLANO, JAMES G | Director | Buy | 2,189 | — | — |
| 2025-06-24 | BUCK, ROBERT M | Director | Buy | 2,189 | — | — |
| 2025-06-24 | AMIRTHALINGAM, BHAVANI | Director | Buy | 2,189 | — | — |
| 2025-06-09 | WHITTENBURG, MARK G | General Counsel and Secretary | Buy | 49,100 | — | — |
| 2025-06-09 | WHITTENBURG, MARK G | General Counsel and Secretary | Sale | 49,100 | $60.03 | $2.95M |
| 2025-06-06 | WHITTENBURG, MARK G | General Counsel and Secretary | Sale | 900 | — | — |
Frequently asked questions
Are CNM insiders buying or selling?
Over the transactions on record, CNM insiders have been net sellers, with about $25.40M in stock sold across 51 sales, against 4 open-market purchases.
Does insider selling at CNM mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which CNM insiders are selling the most?
Recent selling is concentrated in a few names. WITKOWSKI, MARK R accounts for the largest share on record, with about $12.69M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.