Mark Steven Bender Net Worth
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Mark Steven Bender has an estimated net worth of at least $12.1 million*, as of Oct. 29, 2025. They own 44,433 shares of WLK stock. They have sold 79,394 shares of WLK stock since 2021, for an estimated $7.8 million.
Mark Steven Bender $WLK SEC Form 4 Insider Trading
Mark Steven Bender has filed a total of 18 insider trades in $WLK since 2021. Their most recent trade was a sale of 16,988 shares, made on Feb 27, 2026. Their largest trade was a sale of 16,988 shares, made on Feb 27, 2026. We estimate that they now own 44,433 shares of $WLK, worth an estimated $4.3 million.
Insider Trading at $WLK
There have been a total of 55 insider trades reported at $WLK since 2021, with 3,083 shares purchased and 309,528 shares sold. The most active insider traders in $WLK stock have been Albert Chao, Mark Steven Bender, and Robert F. Buesinger. The most recent trade was a sale of 421 shares reported by Mark Steven Bender (EVP & CFO), made on Feb 27, 2026.
History of Insider Stock Trades by Mark Steven Bender
| Company Ticker | Purchase / Sale | Shares | Date | Disclosed (EST) |
|---|---|---|---|---|
WLK
|
Sale | 16,988 | Feb 27, 2026 | March 2, 2026, 12:35 p.m. |
|
WLK
|
Sale | 421 | Feb 27, 2026 | March 2, 2026, 12:35 p.m. |
|
WLK
|
Sale | 4,950 | May 03, 2024 | May 6, 2024, 9:21 a.m. |
|
WLK
|
Sale | 4,804 | Mar 06, 2024 | March 7, 2024, 9:32 a.m. |
|
WLK
|
Sale | 4,854 | Feb 26, 2024 | Feb. 28, 2024, 1:04 p.m. |
|
WLK
|
Sale | 5,921 | Mar 31, 2022 | April 1, 2022, 2:10 p.m. |
|
WLK
|
Sale | 100 | Mar 31, 2022 | April 1, 2022, 2:10 p.m. |
|
WLK
|
Sale | 3,062 | Mar 30, 2022 | March 31, 2022, 11:18 a.m. |
|
WLK
|
Sale | 2,938 | Mar 30, 2022 | March 31, 2022, 11:18 a.m. |
|
WLK
|
Sale | 4,000 | Mar 29, 2022 | March 30, 2022, 12:04 p.m. |
|
WLK
|
Sale | 2,947 | Mar 25, 2022 | March 28, 2022, 1:48 p.m. |
|
WLK
|
Sale | 5,053 | Mar 25, 2022 | March 28, 2022, 1:48 p.m. |
|
WLK
|
Sale | 8,000 | Mar 24, 2022 | March 25, 2022, 10:14 a.m. |
|
WLK
|
Sale | 5,656 | Mar 23, 2022 | March 24, 2022, 12:19 p.m. |
|
WLK
|
Sale | 344 | Mar 23, 2022 | March 24, 2022, 12:19 p.m. |
|
WLK
|
Sale | 2,369 | Nov 11, 2021 | Nov. 15, 2021, 11:23 a.m. |
|
WLK
|
Sale | 631 | Nov 08, 2021 | Nov. 9, 2021, 8 p.m. |
|
WLK
|
Sale | 6,356 | Nov 05, 2021 | Nov. 7, 2021, 8 p.m. |
$WLK Executives and Stock Owners with Insider Trades
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Albert Chao, President & CEO
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Mark Steven Bender, EVP and CFO
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Robert F. Buesinger, EVP, HIP, IT & Digital
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Mark Steven Bender, EVP & CFO
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Albert Chao, Executive Chairman
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Roger L. Kearns, COO and EVP - PEM
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L. Benjamin Ederington, EVP, GC, CAO and Secretary
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Robert F. Buesinger, EVP, PEM Segment Head
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Johnathan Stevan Zoeller, VP & Chief Accounting Officer
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Johnathan Stevan Zoeller, VP and CAO
*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.