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 10 of 11
105 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2011-01-05 | WLK | Tax (F) | −116 | -$5.1K | EDGAR |
| 2010-08-10 | WLK | Sell (S) | −1,000 | -$28.2K | EDGAR |
| 2010-03-02 | WLK | Grant (A) | +5,895 | $0 | EDGAR |
| 2010-02-26 | WLK | Tax (F) | −375 | -$7.6K | EDGAR |
| 2010-01-06 | WLK | Tax (F) | −117 | -$2.9K | EDGAR |
| 2009-03-19 | WLK | Grant (A) | +3,266 | $0 | EDGAR |
| 2009-02-18 | WLK | Grant (A) | +11,592 | $0 | EDGAR |
| 2009-01-02 | WLK | Tax (F) | −113 | -$1.8K | EDGAR |
| 2008-03-18 | WLK | Tax (F) | −59 | -$741 | EDGAR |
| 2008-02-21 | WLK | Grant (A) | +3,266 | $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.