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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-03-13 | 2025-03-11 | CNM | Giles Jeffrey D | EVP, Corp. Department | F - Tax | $46.55 | -436 | 9,095 | -5% | -$20.3K | |
| 2025-03-13 | 2025-03-11 | CNM | Cowles Bradford A | Pres | F - Tax | $46.55 | -724 | 14.0K | -5% | -$33.7K | |
| 2025-03-13 | 2025-03-11 | CNM | Whittenburg Mark G | GC, Sec | F - Tax | $46.55 | -510 | 6,280 | -8% | -$23.7K | |
| M | 2025-03-11 | 2025-03-07+ | CNM | Giles Jeffrey D | EVP, Corp. Department | F - Tax | $47.09 | -702 | 9,531 | -7% | -$33.1K |
| D | 2025-03-11 | 2025-03-10 | CNM | Schaller John R | EVP | S - Sale+OE | $46.82 | -21.9K | 16.5K | -57% | -$1.02M |
| D | 2025-03-11 | 2025-03-10 | CNM | Schaller John R | EVP | M - OptEx | $22.11 | +21.9K | 38.3K | +133% | +$483.5K |
| DM | 2025-03-11 | 2025-03-07+ | CNM | Schaller John R | EVP | F - Tax | $47.07 | -1,446 | 17.4K | -8% | -$68.1K |
| M | 2025-03-11 | 2025-03-07+ | CNM | Witkowski Mark R | CFO | F - Tax | $47.10 | -1,532 | 20.4K | -7% | -$72.2K |
| M | 2025-03-11 | 2025-03-07+ | CNM | Schneider Laura K | CHRO | F - Tax | $47.07 | -633 | 10.0K | -6% | -$29.8K |
| M | 2025-03-11 | 2025-03-07+ | CNM | LeClair Stephen O | CEO, Dir | F - Tax | $47.08 | -5,512 | 79.3K | -6% | -$259.5K |
| M | 2025-03-11 | 2025-03-07+ | CNM | Stephens John Weldon | CAO | F - Tax | $47.07 | -292 | 3,387 | -8% | -$13.7K |
| M | 2025-03-11 | 2025-03-07+ | CNM | Whittenburg Mark G | GC, Sec | F - Tax | $47.06 | -877 | 7,389 | -11% | -$41.3K |
| 2025-03-11 | 2025-03-07 | CNM | HUEBERT MICHAEL G. | Pres | F - Tax | $47.87 | -359 | 12.5K | -3% | -$17.2K | |
| M | 2025-03-11 | 2025-03-07+ | CNM | Cowles Bradford A | Pres | F - Tax | $47.10 | -1,260 | 14.8K | -8% | -$59.3K |
| D | 2025-02-12 | 2025-02-10 | CNM | Cowles Bradford A | Pres | S - Sale | $54.48 | -25.0K | 16.0K | -61% | -$1.36M |
| D | 2025-02-12 | 2025-02-10 | CNM | Cowles Bradford A | Pres | C - Cnv Deriv | $0.00 | +25.0K | 41.0K | +156% | $0 |
| M | 2025-01-17 | 2023-03-13+ | CNM | Witkowski Mark R | CFO | F - Tax | $38.80 | -2,982 | 21.8K | -12% | -$115.7K |
| DM | 2025-01-17 | 2025-01-15+ | CNM | Whittenburg Mark G | GC, Sec | S - Sale | $55.14 | -50.0K | 7,667 | -87% | -$2.76M |
| DM | 2025-01-17 | 2025-01-15+ | CNM | Whittenburg Mark G | GC, Sec | C - Cnv Deriv | $0.00 | +50.0K | 9,641 | New | $0 |
| M | 2025-01-17 | 2023-03-13+ | CNM | Schneider Laura K | CHRO | F - Tax | $39.27 | -1,303 | 11.1K | -11% | -$51.2K |
| M | 2025-01-17 | 2023-03-13+ | CNM | Giles Jeffrey D | EVP, Corp. Department | F - Tax | $38.99 | -1,382 | 10.2K | -12% | -$53.9K |
| M | 2025-01-17 | 2023-03-13+ | CNM | Stephens John Weldon | CAO | F - Tax | $39.28 | -602 | 4,079 | -13% | -$23.6K |
| DM | 2025-01-17 | 2023-03-13+ | CNM | LeClair Stephen O | CEO, Dir | F - Tax | $39.96 | -11.2K | 85.2K | -12% | -$448.1K |
| DM | 2025-01-14 | 2025-01-10+ | CNM | Cowles Bradford A | Pres | S - Sale | $52.28 | -25.0K | 16.0K | -61% | -$1.31M |
| DM | 2025-01-14 | 2025-01-10+ | CNM | Cowles Bradford A | Pres | C - Cnv Deriv | $0.00 | +25.0K | 28.5K | +712% | $0 |
| DM | 2025-01-14 | 2023-03-13+ | CNM | Cowles Bradford A | Pres | F - Tax | $38.70 | -2,413 | 16.7K | -13% | -$93.4K |
| DM | 2025-01-14 | 2025-01-10 | CNM | Schaller John R | EVP | M - OptEx | $21.28 | +60.5K | 39.8K | New | +$1.29M |
| DM | 2025-01-14 | 2025-01-10 | CNM | Schaller John R | EVP | S - Sale+OE | $50.57 | -60.5K | 17.9K | -77% | -$3.06M |
| DM | 2025-01-14 | 2023-03-13+ | CNM | Schaller John R | EVP | F - Tax | $39.36 | -1,749 | 17.9K | -9% | -$68.8K |
| D | 2025-01-14 | 2025-01-10 | CNM | Whittenburg Mark G | GC, Sec | S - Sale | $50.49 | -50.0K | 7,667 | -87% | -$2.52M |
| D | 2025-01-14 | 2025-01-10 | CNM | Whittenburg Mark G | GC, Sec | C - Cnv Deriv | $0.00 | +46.5K | 57.7K | +414% | $0 |
| DM | 2025-01-14 | 2023-03-13+ | CNM | Whittenburg Mark G | GC, Sec | F - Tax | $38.76 | -1,718 | 11.7K | -13% | -$66.6K |
| D | 2024-12-05 | 2024-12-03 | CNM | Giles Jeffrey D | EVP, Corp. Department | C - Cnv Deriv | $0.00 | +22.3K | 36.6K | +155% | $0 |
| D | 2024-12-05 | 2024-12-03 | CNM | Giles Jeffrey D | EVP, Corp. Department | J - Other | $0.00 | +2 | 14.4K | +0.0% | $0 |
| DI | 2024-12-05 | 2024-12-03 | CNM | Giles Jeffrey D | EVP, Corp. Department | J - Other | $0.00 | -2 | 0 | -100% | $0 |
| D | 2024-12-05 | 2024-12-03 | CNM | Giles Jeffrey D | EVP, Corp. Department | S - Sale | $54.71 | -25.0K | 11.6K | -68% | -$1.37M |
| D | 2024-12-05 | 2024-12-03 | CNM | NEWMAN MARGARET | Dir | C - Cnv Deriv | $0.00 | +15.0K | 26.8K | +127% | $0 |
| D | 2024-12-05 | 2024-12-03 | CNM | NEWMAN MARGARET | Dir | S - Sale | $55.25 | -15.0K | 11.8K | -56% | -$828.8K |
| DI | 2024-12-05 | 2024-12-03 | CNM | NEWMAN MARGARET | Dir | J - Other | $0.00 | -32 | 0 | -100% | $0 |
| D | 2024-12-05 | 2024-12-03 | CNM | NEWMAN MARGARET | Dir | J - Other | $0.00 | +32 | 11.8K | +0.3% | $0 |
| D | 2024-12-05 | 2024-12-03 | CNM | Cowles Bradford A | Pres | S - Sale | $55.07 | -50.0K | 18.4K | -73% | -$2.75M |
| D | 2024-12-05 | 2024-12-03 | CNM | Cowles Bradford A | Pres | C - Cnv Deriv | $0.00 | +50.0K | 68.4K | +271% | $0 |
| D | 2024-12-05 | 2024-12-03 | CNM | LeClair Stephen O | CEO, Dir | C - Cnv Deriv | $0.00 | +200.0K | 292.3K | +217% | $0 |
| D | 2024-12-05 | 2024-12-03 | CNM | LeClair Stephen O | CEO, Dir | S - Sale | $54.88 | -200.0K | 92.3K | -68% | -$10.98M |
| DM | 2024-07-24 | 2024-07-22 | CNM | HUEBERT MICHAEL G. | Pres | A - Grant | $0.00 | +12.8K | 3,240 | New | $0 |
| DMI | 2024-07-18 | 2024-07-16 | CNM | Gipson Dennis G | Dir | J - Other | $0.00 | 0 | 143 | New | $0 |
| DI | 2024-07-18 | 2024-07-16 | CNM | Gipson Dennis G | Dir | C - Cnv Deriv | $0.00 | +24.9K | 25.0K | +17,383% | $0 |
| DI | 2024-07-18 | 2024-07-16 | CNM | Gipson Dennis G | Dir | S - Sale | $53.08 | -25.0K | 0 | -100% | -$1.33M |
| DI | 2024-07-17 | 2024-07-15 | CNM | Castellano James G | Dir | S - Sale | $52.22 | -12.5K | 0 | -100% | -$652.8K |
| DI | 2024-07-17 | 2024-07-15 | CNM | Castellano James G | Dir | C - Cnv Deriv | $0.00 | +12.5K | 12.5K | New | $0 |
| DMI | 2024-07-12 | 2024-07-10+ | CNM | Castellano James G | Dir | S - Sale | $50.69 | -12.5K | 0 | -100% | -$633.6K |
| DMI | 2024-07-12 | 2024-07-10+ | CNM | Castellano James G | Dir | C - Cnv Deriv | $0.00 | +12.5K | 200 | New | $0 |
| 2024-06-28 | 2024-06-26 | CNM | Amirthalingam Bhavani | Dir | A - Grant | $0.00 | +2,449 | 13.0K | +23% | $0 | |
| 2024-06-28 | 2024-06-26 | CNM | Kimbrough Orvin T | Dir | A - Grant | $0.00 | +2,449 | 11.8K | +26% | $0 | |
| 2024-06-28 | 2024-06-26 | CNM | NEWMAN MARGARET | Dir | A - Grant | $0.00 | +2,449 | 11.8K | +26% | $0 | |
| 2024-06-28 | 2024-06-26 | CNM | Buck Robert M | Dir | A - Grant | $0.00 | +2,449 | 10.9K | +29% | $0 | |
| 2024-06-28 | 2024-06-26 | CNM | MAZZARELLA KATHLEEN M | Dir | A - Grant | $0.00 | +2,449 | 11.8K | +26% | $0 | |
| 2024-06-28 | 2024-06-26 | CNM | Gipson Dennis G | Dir | A - Grant | $0.00 | +2,449 | 11.8K | +26% | $0 | |
| 2024-06-28 | 2024-06-26 | CNM | Castellano James G | Dir | A - Grant | $0.00 | +2,449 | 11.8K | +26% | $0 | |
| 2024-06-28 | 2024-06-26 | CNM | Hope James D | Dir | A - Grant | $0.00 | +2,449 | 2,778 | +744% | $0 | |
| D | 2024-05-10 | 2024-05-08 | CNM | Witkowski Mark R | CFO | S - Sale | $59.50 | -50.0K | 23.9K | -68% | -$2.98M |
| D | 2024-05-10 | 2024-05-08 | CNM | Witkowski Mark R | CFO | C - Cnv Deriv | $0.00 | +50.0K | 73.9K | +209% | $0 |
| 2024-05-03 | 2024-05-01 | CNM | Hope James D | Dir | A - Grant | $0.00 | +329 | 329 | New | $0 | |
| D | 2024-04-24 | 2024-04-23 | CNM | Stephens John Weldon | CAO | C - Cnv Deriv | $0.00 | +9,497 | 13.8K | +222% | $0 |
| D | 2024-04-24 | 2024-04-23 | CNM | Stephens John Weldon | CAO | S - Sale | $55.19 | -9,497 | 4,281 | -69% | -$524.1K |
| D | 2024-04-23 | 2024-04-19 | CNM | Whittenburg Mark G | GC, Sec | C - Cnv Deriv | $0.00 | +50.0K | 62.9K | +387% | $0 |
| D | 2024-04-23 | 2024-04-19 | CNM | Whittenburg Mark G | GC, Sec | S - Sale | $54.08 | -50.0K | 12.9K | -79% | -$2.70M |
| D | 2024-04-23 | 2024-04-19 | CNM | Stephens John Weldon | CAO | S - Sale | $54.23 | -5,503 | 4,281 | -56% | -$298.4K |
| D | 2024-04-23 | 2024-04-19 | CNM | Stephens John Weldon | CAO | C - Cnv Deriv | $0.00 | +5,503 | 9,784 | +129% | $0 |
| D | 2024-04-10 | 2024-04-08 | CNM | Witkowski Mark R | CFO | S - Sale | $58.51 | -50.0K | 23.9K | -68% | -$2.93M |
| D | 2024-04-10 | 2024-04-08 | CNM | Witkowski Mark R | CFO | C - Cnv Deriv | $0.00 | +50.0K | 73.9K | +209% | $0 |
| D | 2024-03-26 | 2024-03-22 | CNM | Whittenburg Mark G | GC, Sec | C - Cnv Deriv | $0.00 | +49.9K | 62.9K | +384% | $0 |
| D | 2024-03-26 | 2024-03-22 | CNM | Whittenburg Mark G | GC, Sec | S - Sale | $57.91 | -50.0K | 12.9K | -79% | -$2.90M |
| DI | 2024-03-26 | 2024-03-22 | CNM | Whittenburg Mark G | GC, Sec | J - Other | $0.00 | -60 | 0 | -100% | $0 |
| D | 2024-03-26 | 2024-03-22 | CNM | Whittenburg Mark G | GC, Sec | J - Other | $0.00 | +60 | 13.0K | +0.5% | $0 |
| D | 2024-03-26 | 2024-03-22 | CNM | Stephens John Weldon | CAO | C - Cnv Deriv | $0.00 | +15.0K | 19.3K | +347% | $0 |
| D | 2024-03-26 | 2024-03-22 | CNM | Stephens John Weldon | CAO | S - Sale | $57.91 | -15.0K | 4,281 | -78% | -$868.6K |
| DI | 2024-03-26 | 2024-03-22 | CNM | Stephens John Weldon | CAO | J - Other | $0.00 | -32 | 0 | -100% | $0 |
| D | 2024-03-26 | 2024-03-22 | CNM | Stephens John Weldon | CAO | J - Other | $0.00 | +32 | 4,313 | +0.7% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | Witkowski Mark R | CFO | A - Grant | $0.00 | +4,677 | 23.9K | +24% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | LeClair Stephen O | CEO, Dir | A - Grant | $0.00 | +18.7K | 92.3K | +25% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | Whittenburg Mark G | GC, Sec | A - Grant | $0.00 | +2,421 | 12.9K | +23% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | Stephens John Weldon | VP, Corp. Ctrl | S - Sale | $50.02 | -43.9K | 3,468 | -93% | -$2.20M |
| D | 2024-03-11 | 2024-03-07 | CNM | Stephens John Weldon | VP, Corp. Ctrl | C - Cnv Deriv | $0.00 | +43.9K | 47.4K | +1,266% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | Stephens John Weldon | VP, Corp. Ctrl | A - Grant | $0.00 | +813 | 4,281 | +23% | $0 |
| DM | 2024-03-11 | 2024-03-07 | CNM | Giles Jeffrey D | VP, Corp. Department | A - Grant | $0.00 | +6,137 | 10.3K | +149% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | Schneider Laura K | CHRO | A - Grant | $0.00 | +2,295 | 12.0K | +24% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | Cowles Bradford A | Pres | A - Grant | $0.00 | +3,744 | 18.4K | +26% | $0 |
| D | 2024-03-11 | 2024-03-07 | CNM | Schaller John R | Pres | A - Grant | $0.00 | +3,744 | 19.6K | +24% | $0 |
| D | 2024-03-06 | 2024-03-04 | CNM | Stephens John Weldon | VP, Corp. Ctrl | C - Cnv Deriv | $0.00 | +1,100 | 4,568 | +32% | $0 |
| D | 2024-03-06 | 2024-03-04 | CNM | Stephens John Weldon | VP, Corp. Ctrl | S - Sale | $50.02 | -1,100 | 3,468 | -24% | -$55.0K |
| D | 2024-02-26 | 2024-02-22 | CNM | Kimbrough Orvin T | Dir | C - Cnv Deriv | $0.00 | +9,500 | 18.8K | +102% | $0 |
| D | 2024-02-26 | 2024-02-22 | CNM | Kimbrough Orvin T | Dir | S - Sale | $45.28 | -9,500 | 9,320 | -50% | -$430.2K |
| DM | 2024-02-21 | 2024-02-16+ | CNM | Kimbrough Orvin T | Dir | S - Sale | $45.00 | -500 | 9,320 | -5% | -$22.5K |
| DM | 2024-02-21 | 2024-02-16+ | CNM | Kimbrough Orvin T | Dir | C - Cnv Deriv | $0.00 | +500 | 9,507 | +6% | $0 |
| DT | 2024-02-14 | 2024-02-12 | CNM | Giles Jeffrey D | VP, Corp. Department | C - Cnv Deriv | $0.00 | +40.0K | 48.2K | +487% | $0 |
| DT | 2024-02-14 | 2024-02-12 | CNM | Giles Jeffrey D | VP, Corp. Department | S - Sale | $44.14 | -40.0K | 8,217 | -83% | -$1.77M |
| DT | 2024-02-14 | 2024-02-12 | CNM | LeClair Stephen O | CEO, Dir | S - Sale | $44.14 | -150.0K | 73.7K | -67% | -$6.62M |
| DT | 2024-02-14 | 2024-02-12 | CNM | LeClair Stephen O | CEO, Dir | C - Cnv Deriv | $0.00 | +150.0K | 223.7K | +204% | $0 |
| DT | 2024-02-14 | 2024-02-12 | CNM | Kimbrough Orvin T | Dir | C - Cnv Deriv | $0.00 | +5,000 | 14.3K | +54% | $0 |
Purchase Sale Sale after option exercise All abbreviations