Who
Mark R. Witkowski
Chief Executive Officer
Company insider
Files Form 4 as: Chief Executive Officer, Core & Main.
In numbers
- Trades disclosed
- 70
- Buys
- 0
- Sells
- 8
- Bought
- $0
- Sold
- $22.2M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 11 Mar 2022
- Last trade
- 16 Oct 2026
- Last filed
- 20 Oct 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 16 Oct 2026filed 20 Oct 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code G | —19,596 at $0.00 | filing |
| 12 Mar 2026filed 13 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code A | —18,372 at $0.00 | filing |
| 12 Mar 2026filed 13 Mar 2026 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | —131,382 at $0.00 | filing |
| 12 Mar 2026filed 13 Mar 2026 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | —131,382 at $0.00 | filing |
| 12 Mar 2026filed 13 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code A | —18,372 at $0.00 | filing |
| 11 Mar 2026filed 13 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code F | $83K1,685 at $49.16 | filing |
| 11 Mar 2026filed 13 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code F | $83K1,685 at $49.16 | filing |
| 10 Mar 2026filed 11 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code F | $46K937 at $49.38 | filing |
| 10 Mar 2026filed 11 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code F | $46K937 at $49.38 | filing |
| 9 Mar 2026filed 11 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code F | $24K478 at $49.96 | filing |
| 9 Mar 2026filed 11 Mar 2026 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code F | $24K478 at $49.96 | filing |
| 18 Aug 2025filed 20 Aug 2025 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code J | —100,000 at $0.00 | filing |
| 18 Aug 2025filed 20 Aug 2025 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code J | —100,000 at $0.00 | filing |
| 18 Aug 2025filed 20 Aug 2025 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code C | —100,000 at $0.00 | filing |
| 18 Aug 2025filed 20 Aug 2025 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code C | —100,000 at $0.00 | filing |
| 18 Aug 2025filed 20 Aug 2025 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Sold | $6.4M100,000 at $64.08 | filing |
| 17 Jul 2025filed 21 Jul 2025 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code J | —100,000 at $0.00 | filing |
| 17 Jul 2025filed 21 Jul 2025 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code J | —100,000 at $0.00 | filing |
| 17 Jul 2025filed 21 Jul 2025 | CNM Core & Mainoption or derivative · Distributors & Wholesale | SEC FORM 4 Code C | —100,000 at $0.00 | filing |
| 17 Jul 2025filed 21 Jul 2025 | CNM Core & MainDistributors & Wholesale | SEC FORM 4 Code C | —100,000 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.