Mark Steven Bender
CIK 1330417 · EVP & CFO · last filed 2026-05-14
"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.
Loading insider history…
Disclosed Exposure
$3.50M
Companies
2
Total Filings
105
Lifetime Open-Market Net
-$36.41M
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.
Recent Filings · Page 2 of 11
105 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-03-07 | WLK | Sell (S) | −4,804 | -$677.5K | EDGAR |
| 2024-02-28 | WLK | Sell (S) | −4,854 | -$667.8K | EDGAR |
| 2024-02-21 | WLK | Mixed | +10,564 | -$803.0K | EDGAR |
| 2024-02-20 | WLK | Grant (A) | — | $0 | EDGAR |
| 2023-08-09 | WLK | Mixed | — | -$900.2K | EDGAR |
| 2023-05-16 | WLK | Grant (A) | — | $0 | EDGAR |
| 2023-05-10 | WLK | Mixed | — | -$58.8K | EDGAR |
| 2023-03-15 | WLK | Mixed | +8,310 | -$629.4K | EDGAR |
| 2023-02-28 | WLK | Mixed | — | -$164.1K | EDGAR |
| 2023-02-21 | WLK | Grant (A) | — | $0 | EDGAR |
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.