Updated Jul 16, 2026
Bender Mark Steven has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $3.60M.
Mark Steven Bender is associated with Westlake Corporation, as indicated by recent SEC filings. Specific details about his role or contributions to the company are not widely documented in public sources.
| Role | Insider |
|---|---|
| Notability | 10/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-14 | WLK | WESTLAKE CORP | F — Tax withholding / forfeiture | 5.3K | $97.34 | $514K |
| 2026-05-14 | WLK | WESTLAKE CORP | M — Option exercise | 13.2K | $0.00 | |
| 2026-03-30 | WLK | WESTLAKE CORP | S — Open-market sale | 16.4K | $112.53 | $1.85M |
| 2026-03-06 | WLK | WESTLAKE CORP | F — Tax withholding / forfeiture | 1.2K | $104.96 | $123K |
| 2026-03-02 | WLK | WESTLAKE CORP | S — Open-market sale | 421 | $101.52 | $43K |
| 2026-03-02 | WLK | WESTLAKE CORP | S — Open-market sale | 17.0K | $100.91 | $1.71M |
| 2026-03-02 | WLK | WESTLAKE CORP | D — Derivative transaction | 12.7K | $98.20 | $1.25M |
| 2026-03-02 | WLK | WESTLAKE CORP | M — Option exercise | 6.5K | $86.54 | $562K |
| 2026-03-02 | WLK | WESTLAKE CORP | M — Option exercise | 6.2K | $65.81 | $408K |
| 2026-02-23 | WLK | WESTLAKE CORP | F — Tax withholding / forfeiture | 445 | $94.10 | $42K |
| 2026-02-23 | WLK | WESTLAKE CORP | A — Grant or award | 1.8K | $0.00 | |
| 2026-02-19 | WLK | WESTLAKE CORP | F — Tax withholding / forfeiture | 1.2K | $98.95 | $120K |
| 2026-02-19 | WLK | WESTLAKE CORP | M — Option exercise | 4.8K | $0.00 |
Mark Steven Bender is associated with Westlake Corporation, as indicated by recent SEC filings. Specific details about his role or contributions to the company are not widely documented in public sources.…
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 3 open-market sales ($3.60M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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