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.
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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 9 of 11
105 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2013-02-20 | WLK | Grant (A) | — | $0 | EDGAR |
| 2012-12-05 | WLK | Sell (S) | −6,083 | -$445.6K | EDGAR |
| 2012-11-28 | WLK | Mixed | — | -$267.2K | EDGAR |
| 2012-11-27 | WLK | Mixed | — | -$75.3K | EDGAR |
| 2012-02-28 | WLK | Tax (F) | −2,900 | -$166.8K | EDGAR |
| 2012-02-23 | WLK | Grant (A) | +3,274 | $0 | EDGAR |
| 2012-02-22 | WLK | Mixed | −17,266 | -$1.01M | EDGAR |
| 2012-02-16 | WLK | Tax (F) | −4,408 | -$251.8K | EDGAR |
| 2011-02-28 | WLK | Mixed | +2,800 | -$728.4K | EDGAR |
| 2011-02-22 | WLK | Mixed | +1,836 | -$40.3K | 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.