CNM Core & Main, Inc.
NYSE · SEC CIK 1856525 · EDGAR
- Bought, last 12 months
- $195.1K 2 purchases by 1 insiders
- Sold, last 12 months
- $262.7K 1 sales by 1 insiders
- Filings on record
- 219 since 2022-01-12, latest 2026-08-05 17:11
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Bradbury Robyn L | CFO | — | $262.7K |
| Hope James D | Dir | $195.1K | — |
| Harper Carla D | Senior VP, Human Resources | — | — |
| Stephens John Weldon | CAO | — | — |
| Kimbrough Orvin T | Dir | — | — |
| Witkowski Mark R | CEO, Dir | — | — |
| Whittenburg Mark G | GC, Sec | — | — |
| Giles Jeffrey D | EVP, Corp. Development | — | — |
| Castellano James G | Dir | — | — |
| Gipson Dennis G | Dir | — | — |
Transactions 373
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-05 17:11 | 2026-08-04 | CNM | Harper Carla D | Senior VP, Human Resources | F - Tax | $46.32 | -242 | 13.1K | -2% | -$11.2K | |
| 2026-07-23 17:02 | 2026-07-22 | CNM | HUEBERT MICHAEL G. | Pres | F - Tax | $43.75 | -1,301 | 24.0K | -5% | -$56.9K | |
| 2026-07-08 17:36 | 2026-07-06 | CNM | Hope James D | Dir | P - Purchase | $46.01 | +2,067 | 11.8K | +21% | +$95.1K | |
| 2026-06-24 20:02 | 2026-06-23 | CNM | Castellano James G | Dir | A - Grant | $0.00 | +2,799 | 7,437 | +60% | $0 | |
| 2026-06-24 20:02 | 2026-06-23 | CNM | NEWMAN MARGARET | Dir | A - Grant | $0.00 | +2,799 | 16.8K | +20% | $0 | |
| 2026-06-24 20:02 | 2026-06-23 | CNM | Hardwick M Susan | Dir | A - Grant | $0.00 | +2,799 | 3,379 | +483% | $0 | |
| 2026-06-24 20:01 | 2026-06-23 | CNM | MAZZARELLA KATHLEEN M | Dir | A - Grant | $0.00 | +2,799 | 16.8K | +20% | $0 | |
| 2026-06-24 20:01 | 2026-06-23 | CNM | Hope James D | Dir | A - Grant | $0.00 | +2,799 | 9,738 | +40% | $0 | |
| 2026-06-24 20:01 | 2026-06-23 | CNM | Amirthalingam Bhavani | Dir | A - Grant | $0.00 | +2,799 | 18.0K | +18% | $0 | |
| 2026-06-24 20:01 | 2026-06-23 | CNM | Gipson Dennis G | Dir | A - Grant | $0.00 | +2,799 | 16.8K | +20% | $0 | |
| 2026-06-24 20:01 | 2026-06-23 | CNM | Kimbrough Orvin T | Dir | A - Grant | $0.00 | +2,799 | 16.8K | +20% | $0 | |
| 2026-06-24 20:01 | 2026-06-23 | CNM | Buck Robert M | Dir | A - Grant | $0.00 | +2,799 | 15.8K | +21% | $0 | |
| 2026-06-24 19:56 | 2026-06-22 | CNM | Harper Carla D | Senior VP, Human Resources | F - Tax | $47.25 | -568 | 13.3K | -4% | -$26.8K | |
| DT | 2026-04-21 17:45 | 2026-04-17 | CNM | Bradbury Robyn L | CFO | C - Cnv Deriv | $0.00 | +5,000 | 17.5K | +40% | $0 |
| DMT | 2026-04-21 17:45 | 2026-04-17 | CNM | Bradbury Robyn L | CFO | S - Sale | $52.54 | -5,000 | 12.5K | -29% | -$262.7K |
| 2026-04-09 16:47 | 2026-04-07 | CNM | Hope James D | Dir | P - Purchase | $50.70 | +1,972 | 6,939 | +40% | +$100.0K | |
| 2026-04-02 17:53 | 2026-04-01 | CNM | Hardwick M Susan | Dir | A - Grant | $0.00 | +580 | 580 | New | $0 | |
| 2026-03-13 | 2026-03-11 | CNM | Whittenburg Mark G | GC, Sec | F - Tax | $49.16 | -331 | 8,525 | -4% | -$16.3K | |
| D | 2026-03-13 | 2026-03-12 | CNM | Stephens John Weldon | CAO | A - Grant | $0.00 | +936 | 17.4K | +6% | $0 |
| D | 2026-03-13 | 2026-03-11 | CNM | Stephens John Weldon | CAO | F - Tax | $49.16 | -107 | 16.4K | -0.6% | -$5,260 |
| D | 2026-03-13 | 2026-03-11 | CNM | Witkowski Mark R | CEO, Dir | F - Tax | $49.16 | -1,685 | 32.7K | -5% | -$82.8K |
| D | 2026-03-13 | 2026-03-12 | CNM | Witkowski Mark R | CEO, Dir | A - Grant | $0.00 | +18.4K | 51.1K | +56% | $0 |
| D | 2026-03-13 | 2026-03-12 | CNM | HUEBERT MICHAEL G. | Pres | A - Grant | $0.00 | +10.5K | 25.3K | +71% | $0 |
| D | 2026-03-13 | 2026-03-11 | CNM | HUEBERT MICHAEL G. | Pres | F - Tax | $49.16 | -447 | 14.8K | -3% | -$22.0K |
| D | 2026-03-13 | 2026-03-12 | CNM | Giles Jeffrey D | EVP, Corp. Development | A - Grant | $0.00 | +3,021 | 9,681 | +45% | $0 |
| D | 2026-03-13 | 2026-03-12 | CNM | Bradbury Robyn L | CFO | A - Grant | $0.00 | +4,824 | 12.5K | +63% | $0 |
| D | 2026-03-13 | 2026-03-11 | CNM | Bradbury Robyn L | CFO | F - Tax | $49.16 | -404 | 7,676 | -5% | -$19.9K |
| D | 2026-03-13 | 2026-03-11 | CNM | Harper Carla D | Senior VP, Human Resources | F - Tax | $49.16 | -89 | 11.4K | -0.8% | -$4,375 |
| D | 2026-03-13 | 2026-03-12 | CNM | Harper Carla D | Senior VP, Human Resources | A - Grant | $0.00 | +2,463 | 13.9K | +22% | $0 |
| D | 2026-03-13 | 2026-03-12 | CNM | Cowles Bradford A | Pres | A - Grant | $0.00 | +7,086 | 25.5K | +39% | $0 |
| D | 2026-03-13 | 2026-03-11 | CNM | Cowles Bradford A | Pres | F - Tax | $49.16 | -607 | 18.4K | -3% | -$29.8K |
| M | 2026-03-11 | 2026-03-09+ | CNM | LeClair Stephen O | Executive COB, Dir | F - Tax | $49.57 | -4,600 | 69.2K | -6% | -$228.0K |
| 2026-03-11 | 2026-03-09 | CNM | HUEBERT MICHAEL G. | Pres | F - Tax | $49.96 | -350 | 15.3K | -2% | -$17.5K | |
| M | 2026-03-11 | 2026-03-09+ | CNM | Harper Carla D | Senior VP, Human Resources | F - Tax | $49.55 | -266 | 11.5K | -2% | -$13.2K |
| M | 2026-03-11 | 2026-03-09+ | CNM | Whittenburg Mark G | GC, Sec | F - Tax | $49.57 | -835 | 9,413 | -8% | -$41.4K |
| M | 2026-03-11 | 2026-03-09+ | CNM | Bradbury Robyn L | CFO | F - Tax | $49.71 | -475 | 8,285 | -5% | -$23.6K |
| M | 2026-03-11 | 2026-03-09+ | CNM | Cowles Bradford A | Pres | F - Tax | $49.59 | -1,176 | 19.0K | -6% | -$58.3K |
| M | 2026-03-11 | 2026-03-09+ | CNM | Witkowski Mark R | CEO, Dir | F - Tax | $49.58 | -1,415 | 34.4K | -4% | -$70.1K |
| M | 2026-03-11 | 2026-03-09+ | CNM | Stephens John Weldon | CAO | F - Tax | $49.57 | -292 | 16.7K | -2% | -$14.5K |
| D | 2026-01-28 | 2026-01-26 | CNM | Giles Jeffrey D | EVP, Corp. Development | A - Grant | $0.00 | +4,377 | 6,660 | +192% | $0 |
| D | 2025-09-16 | 2025-09-12 | CNM | Stephens John Weldon | CAO | M - OptEx | $20.81 | +12.7K | 16.8K | +309% | +$264.6K |
| 2025-09-05 | 2025-09-03 | CNM | Harper Carla D | Senior VP, Human Resources | A - Grant | $0.00 | +2,091 | 11.8K | +22% | $0 | |
| D | 2025-08-20 | 2025-08-18 | CNM | Witkowski Mark R | CEO, Dir | S - Sale | $64.08 | -100.0K | 35.8K | -74% | -$6.41M |
| D | 2025-08-20 | 2025-08-18 | CNM | Witkowski Mark R | CEO, Dir | C - Cnv Deriv | $0.00 | +100.0K | 135.8K | +279% | $0 |
| 2025-07-23 | 2025-07-22 | CNM | HUEBERT MICHAEL G. | Pres | F - Tax | $65.03 | -1,337 | 15.6K | -8% | -$86.9K | |
| D | 2025-07-23 | 2025-07-22 | CNM | Bradbury Robyn L | CFO | S - Sale | $64.51 | -5,000 | 8,555 | -37% | -$322.6K |
| D | 2025-07-23 | 2025-07-22 | CNM | Bradbury Robyn L | CFO | C - Cnv Deriv | $0.00 | +5,000 | 13.6K | +58% | $0 |
| DI | 2025-07-21 | 2025-07-18 | CNM | Kimbrough Orvin T | Dir | J - Other | $0.00 | -5 | 3 | -62% | $0 |
| D | 2025-07-21 | 2025-07-18 | CNM | Kimbrough Orvin T | Dir | J - Other | $0.00 | +5 | 14.0K | +0.0% | $0 |
| D | 2025-07-21 | 2025-07-18 | CNM | Kimbrough Orvin T | Dir | C - Cnv Deriv | $0.00 | +24.0K | 37.9K | +172% | $0 |
| D | 2025-07-21 | 2025-07-18 | CNM | Kimbrough Orvin T | Dir | S - Sale | $61.77 | -24.0K | 14.0K | -63% | -$1.48M |
| DM | 2025-07-21 | 2025-07-17 | CNM | Witkowski Mark R | CEO, Dir | S - Sale | $61.26 | -100.0K | 35.8K | -74% | -$6.13M |
| D | 2025-07-21 | 2025-07-17 | CNM | Witkowski Mark R | CEO, Dir | C - Cnv Deriv | $0.00 | +100.0K | 135.8K | +279% | $0 |
| DI | 2025-07-21 | 2025-07-18 | CNM | Castellano James G | Dir | S - Sale | $61.98 | -44.0K | 0 | -100% | -$2.73M |
| DI | 2025-07-21 | 2025-07-18 | CNM | Castellano James G | Dir | C - Cnv Deriv | $0.00 | +34.7K | 44.0K | +372% | $0 |
| DM | 2025-07-08 | 2025-07-03+ | CNM | LeClair Stephen O | Executive COB, Dir | S - Sale+OE | $62.14 | -125.0K | 70.7K | -64% | -$7.77M |
| DM | 2025-07-08 | 2025-07-03+ | CNM | LeClair Stephen O | Executive COB, Dir | M - OptEx | $20.81 | +125.0K | 115.7K | New | +$2.60M |
| DI | 2025-07-03 | 2025-07-01 | CNM | Bradbury Robyn L | CFO | J - Other | $0.00 | -43 | 22 | -66% | $0 |
| D | 2025-07-03 | 2025-07-01 | CNM | Bradbury Robyn L | CFO | J - Other | $0.00 | +43 | 8,598 | +0.5% | $0 |
| DM | 2025-07-03 | 2025-07-01 | CNM | Bradbury Robyn L | CFO | S - Sale | $60.49 | -25.0K | 8,874 | -74% | -$1.51M |
| D | 2025-07-03 | 2025-07-01 | CNM | Bradbury Robyn L | CFO | C - Cnv Deriv | $0.00 | +25.0K | 33.6K | +290% | $0 |
| 2025-06-26 | 2025-06-24 | CNM | Gipson Dennis G | Dir | A - Grant | $0.00 | +2,189 | 14.0K | +19% | $0 | |
| 2025-06-26 | 2025-06-24 | CNM | Castellano James G | Dir | A - Grant | $0.00 | +2,189 | 4,638 | +89% | $0 | |
| 2025-06-26 | 2025-06-24 | CNM | Hope James D | Dir | A - Grant | $0.00 | +2,189 | 4,967 | +79% | $0 | |
| 2025-06-26 | 2025-06-24 | CNM | NEWMAN MARGARET | Dir | A - Grant | $0.00 | +2,189 | 14.0K | +19% | $0 | |
| 2025-06-26 | 2025-06-24 | CNM | Buck Robert M | Dir | A - Grant | $0.00 | +2,189 | 13.1K | +20% | $0 | |
| 2025-06-26 | 2025-06-24 | CNM | Amirthalingam Bhavani | Dir | A - Grant | $0.00 | +2,189 | 15.2K | +17% | $0 | |
| 2025-06-26 | 2025-06-24 | CNM | Kimbrough Orvin T | Dir | A - Grant | $0.00 | +2,189 | 14.0K | +19% | $0 | |
| 2025-06-26 | 2025-06-24 | CNM | MAZZARELLA KATHLEEN M | Dir | A - Grant | $0.00 | +2,189 | 14.0K | +19% | $0 | |
| DM | 2025-06-10 | 2025-06-06+ | CNM | Whittenburg Mark G | GC, Sec | S - Sale | $60.03 | -50.0K | 9,691 | -84% | -$3.00M |
| DM | 2025-06-10 | 2025-06-06+ | CNM | Whittenburg Mark G | GC, Sec | C - Cnv Deriv | $0.00 | +50.0K | 58.8K | +569% | $0 |
| D | 2025-06-05 | 2025-06-03 | CNM | Schneider Laura K | CHRO | S - Sale | $56.25 | -45.7K | 12.9K | -78% | -$2.57M |
| D | 2025-06-05 | 2025-06-03 | CNM | Schneider Laura K | CHRO | C - Cnv Deriv | $0.00 | +45.7K | 58.6K | +355% | $0 |
| D | 2025-05-30 | 2025-05-28 | CNM | Schaller John R | EVP | S - Sale+OE | $55.00 | -9,794 | 19.7K | -33% | -$538.7K |
| D | 2025-05-30 | 2025-05-28 | CNM | Schaller John R | EVP | M - OptEx | $50.12 | +9,794 | 29.5K | +50% | +$490.9K |
| DM | 2025-04-30 | 2025-04-28+ | CNM | Stephens John Weldon | CAO | S - Sale | $53.03 | -42.0K | 4,120 | -91% | -$2.23M |
| DM | 2025-04-30 | 2025-04-28+ | CNM | Stephens John Weldon | CAO | C - Cnv Deriv | $0.00 | +42.0K | 14.3K | New | $0 |
| AI | 2025-04-22 | 2025-04-17 | CNM | Castellano James G | Dir | G - Gift | $0.00 | +9,320 | 9,320 | New | $0 |
| A | 2025-04-22 | 2025-04-17 | CNM | Castellano James G | Dir | G - Gift | $0.00 | -9,320 | 2,449 | -79% | $0 |
| 2025-04-21 | 2025-04-17 | CNM | Castellano James G | Dir | G - Gift | $0.00 | -9,320 | 2,449 | -79% | $0 | |
| I | 2025-04-21 | 2025-04-17 | CNM | Castellano James G | Dir | G - Gift | $0.00 | +9,320 | 9,320 | New | $0 |
| D | 2025-04-04 | 2025-04-02 | CNM | Stephens John Weldon | CAO | S - Sale | $50.48 | -42.0K | 4,120 | -91% | -$2.12M |
| D | 2025-04-04 | 2025-04-02 | CNM | Stephens John Weldon | CAO | C - Cnv Deriv | $0.00 | +42.0K | 46.1K | +1,019% | $0 |
| D | 2025-04-02 | 2025-03-31 | CNM | Witkowski Mark R | CEO, Dir | A - Grant | $0.00 | +10.1K | 35.8K | +39% | $0 |
| D | 2025-04-02 | 2025-03-31 | CNM | Bradbury Robyn L | CFO | A - Grant | $0.00 | +2,913 | 8,555 | +52% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | Whittenburg Mark G | GC, Sec | A - Grant | $0.00 | +3,411 | 9,691 | +54% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | Witkowski Mark R | CFO | A - Grant | $0.00 | +7,296 | 25.8K | +40% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | Cowles Bradford A | Pres | A - Grant | $0.00 | +6,162 | 20.2K | +44% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | HUEBERT MICHAEL G. | Pres | A - Grant | $0.00 | +4,494 | 17.0K | +36% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | Schaller John R | EVP | A - Grant | $0.00 | +4,215 | 19.7K | +27% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | Stephens John Weldon | CAO | A - Grant | $0.00 | +933 | 4,120 | +29% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | Schneider Laura K | CHRO | A - Grant | $0.00 | +3,276 | 12.9K | +34% | $0 |
| D | 2025-03-17 | 2025-03-13 | CNM | Giles Jeffrey D | EVP, Corp. Department | A - Grant | $0.00 | +2,988 | 12.1K | +33% | $0 |
| 2025-03-13 | 2025-03-11 | CNM | Witkowski Mark R | CFO | F - Tax | $46.55 | -925 | 18.5K | -5% | -$43.1K | |
| 2025-03-13 | 2025-03-11 | CNM | LeClair Stephen O | CEO, Dir | F - Tax | $46.55 | -4,889 | 70.7K | -6% | -$227.6K | |
| D | 2025-03-13 | 2025-03-11 | CNM | Schaller John R | EVP | F - Tax | $46.55 | -978 | 15.5K | -6% | -$45.5K |
| D | 2025-03-13 | 2025-03-11 | CNM | Schaller John R | EVP | S - Sale+OE | $45.00 | -19.3K | 15.5K | -55% | -$868.1K |
| D | 2025-03-13 | 2025-03-11 | CNM | Schaller John R | EVP | M - OptEx | $20.81 | +19.3K | 34.8K | +125% | +$401.5K |
| 2025-03-13 | 2025-03-11 | CNM | Stephens John Weldon | CAO | F - Tax | $46.55 | -200 | 3,187 | -6% | -$9,310 | |
| 2025-03-13 | 2025-03-11 | CNM | Schneider Laura K | CHRO | F - Tax | $46.55 | -434 | 9,597 | -4% | -$20.2K |
Purchase Sale Sale after option exercise All abbreviations