Mark R Witkowski
CIK 1866738 · Chief Executive Officer · last filed 2026-03-13
Mark R Witkowski is a Chief Executive Officer who has filed 18 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing, for CNM, was dated Mar 13, 2026. Across all open-market trades the lifetime net is −$22.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.5M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$2.47M
1
18
-$22.18M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| CNM | Chief Executive Officer | 51,119 | $48.33 | $2.47M | -$22.18M | 18 | 2026-03-13 |
Recent Filings
18 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-13 | CNM | Mixed | +16,687 | -$82.8K | EDGAR |
| 2026-03-11 | CNM | Tax (F) | −1,415 | -$70.1K | EDGAR |
| 2025-08-20 | CNM | Mixed | — | -$6.41M | EDGAR |
| 2025-07-21 | CNM | Mixed | — | -$6.13M | EDGAR |
| 2025-04-02 | CNM | Grant (A) | +10,092 | $0 | EDGAR |
| 2025-03-17 | CNM | Grant (A) | +7,296 | $0 | EDGAR |
| 2025-03-13 | CNM | Tax (F) | −925 | -$43.1K | EDGAR |
| 2025-03-11 | CNM | Tax (F) | −1,532 | -$72.2K | EDGAR |
| 2025-01-17 | CNM | Tax (F) | −2,982 | -$115.7K | EDGAR |
| 2024-05-10 | CNM | Mixed | — | -$2.98M | EDGAR |