Insiders / Whittenburg Mark G
Whittenburg Mark G
CIK 1866737personinsider
Companies
1
First seen
Jan 2, 2026
Last activity
Mar 13, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Core & Main, Inc. · CNM | 8,525 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Core & Main, Inc. | Class A Common Stock | 8,525 |
| Core & Main, Inc. | Class B Common Stock and Limited Partnership InterestsDerivative | 227,312 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 10, 2026 | Other | CNM Core & Main, Inc. Class A Common Stock | $27.5K | -557 -5.92% | 8,856 <0.01% of shares | low |
| Mar 11, 2026 | Other | CNM Core & Main, Inc. Class A Common Stock | $16.3K | -331 -3.74% | 8,525 <0.01% of shares | low |
| Mar 9, 2026 | Other | CNM Core & Main, Inc. Class A Common Stock | $13.9K | -278 -2.87% | 9,413 <0.01% of shares | low |
| Dec 31, 2025 | Gift | CNM Core & Main, Inc. Class B Common Stock and Limited Partnership Interests | — | -26K -10.09% | 227,312 0.12% of shares | low |