Mark R Witkowski
CIK 1866738 · Chief Executive Officer · last filed 2026-03-13
"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.
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Disclosed Exposure
$2.15M
Companies
1
Total Filings
21
Lifetime Open-Market Net
-$22.18M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| CNM | Chief Executive Officer | 51,119 | $42.07 | $2.15M | -$22.18M | 18 | 2026-03-13 |
Recent Filings · Page 2 of 3
21 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-05-10 | CNM | Mixed | — | -$2.98M | EDGAR |
| 2024-04-10 | CNM | Mixed | — | -$2.93M | EDGAR |
| 2024-04-08 | CNM | Notice (144) | −100,000 | -$5.92M | EDGAR |
| 2024-03-11 | CNM | Grant (A) | +4,677 | $0 | EDGAR |
| 2023-11-17 | CNM | Mixed | — | -$1.36M | EDGAR |
| 2023-11-13 | CNM | Mixed | — | -$642.0K | EDGAR |
| 2023-10-06 | CNM | Mixed | — | -$600.3K | EDGAR |
| 2023-09-27 | CNM | Mixed | −603 | -$1.14M | EDGAR |
| 2023-09-25 | CNM | Notice (144) | −120,000 | -$3.40M | EDGAR |
| 2023-03-14 | CNM | Grant (A) | +9,669 | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.