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 4 of 11
105 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2022-02-22 | WLK | Grant (A) | +7,923 | $0 | EDGAR |
| 2022-02-17 | WLK | Mixed | +3,589 | -$122.4K | EDGAR |
| 2021-11-15 | WLK | Sell (S) | −2,369 | -$240.6K | EDGAR |
| 2021-11-10 | WLK | Sell (S) | −631 | -$63.6K | EDGAR |
| 2021-11-08 | WLK | Sell (S) | −6,356 | -$627.9K | EDGAR |
| 2021-08-16 | WLK | Grant (A) | — | $0 | EDGAR |
| 2021-03-15 | WLK | Mixed | — | -$690.5K | EDGAR |
| 2021-03-10 | WLK | Mixed | — | -$764.1K | EDGAR |
| 2021-02-22 | WLK | Grant (A) | — | $0 | EDGAR |
| 2021-02-18 | WLK | Mixed | +2,422 | -$68.7K | 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.