Insiders / Witkowski Mark R
Witkowski Mark R
CIK 1866738personinsider
Companies
1
First seen
Mar 11, 2026
Last activity
Mar 13, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Core & Main, Inc. · CNM | 51,119 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Core & Main, Inc. | Class A Common Stock | 51,119 |
| Core & Main, Inc. | Options (Rights to Buy)Derivative | 131,382 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 11, 2026 | Other | CNM Core & Main, Inc. Class A Common Stock | $82.8K | -2K -4.89% | 32,747 0.02% of shares | low |
| Mar 10, 2026 | Other | CNM Core & Main, Inc. Class A Common Stock | $46.3K | -937 -2.65% | 34,432 0.02% of shares | low |
| Mar 9, 2026 | Other | CNM Core & Main, Inc. Class A Common Stock | $23.9K | -478 -1.33% | 35,369 0.02% of shares | low |
| Mar 12, 2026 | Grant | CNM Core & Main, Inc. Class A Common Stock | $0 | +18K +56.10% | 51,119 0.03% of shares | low |
| Mar 12, 2026 | Grant | CNM Core & Main, Inc. Options (Rights to Buy) | — | +131K | 131,382 0.07% of shares | low |