WLK
insider transactionsWESTLAKE CORP — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 365d
-37.8K
0 buy · 37.8K sell
Net value · 365d
-$4.1M
$0 in · $4.1M out
Sentiment · 365d
Net selling
0% buying · 100% selling
Open-market trades · 365d
4
0 buy · 37.8K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Jonathan Baksht KEY
SVP and CFO
$0
20.6K sh
Own New
-
Other·F
EVP & CFO
$514.3K
5.3K sh · $97.34
Own -13%
-
Exercise·M
EVP & CFO
$0
13.2K sh
Own New
-
Exercise·M
EVP & CFO
$0
13.2K sh
Own +47%
-
Grant·A
SVP, PEM Segment Head
$0
2.0K sh
Own New
-
Sell·S
EVP & CFO
$1.8M
16.4K sh · $112.54
Own -37%
-
Sell·S
EVP, PEM Segment Head
$461.0K
4.0K sh · $115.25
Own -10%
-
Exercise·M
EVP & CFO
$0
6.5K sh
Own New
-
Exercise·M
EVP & CFO
$0
6.2K sh
Own New
-
Sell·S
EVP & CFO
$42.7K
421 sh · $101.52
Own -1%
-
Sell·S
EVP & CFO
$1.7M
17.0K sh · $100.91
Own -27%
-
Other·D
EVP & CFO
$1.2M
12.7K sh · $98.20
Own -17%
-
Exercise·M
EVP & CFO
$562.0K
6.5K sh · $86.54
Own +10%
-
Exercise·M
EVP & CFO
$408.0K
6.2K sh · $65.81
Own +10%
-
Grant·A
Jonathan Baksht KEY
EVP and CFO
$0
26.7K sh
Own New
-
Grant·A
Jonathan Baksht KEY
EVP and CFO
$0
18.1K sh
Own +79%
-
Grant·A
SVP, HIP Segment Head
$0
4.0K sh
Own New
-
Grant·A
SVP, HIP Segment Head
$0
14.6K sh
Own New
-
Other·F
SVP, HIP Segment Head
$8.6K
91 sh · $94.10
Own -1%
-
Grant·A
VP and CAO
$0
2.5K sh
Own New
-
Grant·A
VP and CAO
$0
1.2K sh
Own New
-
Grant·A
VP and CAO
$0
4.4K sh
Own New
-
Other·F
VP and CAO
$7.6K
81 sh · $94.10
Own -2%
-
Grant·A
Jean-Marc Gilson KEY
President and CEO
$0
29.8K sh
Own New
-
Grant·A
Jean-Marc Gilson KEY
President and CEO
$0
109.1K sh
Own New
-
Grant·A
EVP, Legal & External Affairs
$0
7.0K sh
Own New
-
Grant·A
EVP, Legal & External Affairs
$0
25.7K sh
Own New
-
Other·F
EVP, Legal & External Affairs
$33.6K
357 sh · $94.10
Own -0%
-
Grant·A
Director
$0
2.4K sh
Own New
-
Grant·A
Director
$0
1.1K sh
Own New
-
Grant·A
Director
$0
4.0K sh
Own New
-
Other·F
Director
$8.6K
91 sh · $94.10
Own -1%
-
Grant·A
James Chao KEY
Senior Chairman
$0
7.5K sh
Own New
-
Grant·A
James Chao KEY
Senior Chairman
$0
27.4K sh
Own New
-
Other·F
James Chao KEY
Senior Chairman
$147.6K
1.6K sh · $94.10
Own -3%
-
Grant·A
Albert Chao KEY
Executive Chairman
$0
14.9K sh
Own New
-
Grant·A
Albert Chao KEY
Executive Chairman
$0
54.8K sh
Own New
-
Other·F
Albert Chao KEY
Executive Chairman
$235.3K
2.5K sh · $94.10
Own -0%
-
Grant·A
EVP, PEM Segment Head
$0
5.3K sh
Own New
-
Grant·A
EVP, PEM Segment Head
$0
19.4K sh
Own New
-
Other·F
EVP, PEM Segment Head
$30.7K
326 sh · $94.10
Own -1%
-
Grant·A
EVP & CFO
$0
7.7K sh
Own New
-
Grant·A
EVP & CFO
$0
28.4K sh
Own New
-
Other·F
EVP & CFO
$41.9K
445 sh · $94.10
Own -1%
-
Grant·A
Director
$0
1.9K sh
Own New
-
Grant·A
SVP, HIP Segment Head
$0
365 sh
Own +3%
-
Grant·A
VP and CAO
$0
264 sh
Own +5%
-
Grant·A
EVP, Legal & External Affairs
$0
1.4K sh
Own +2%
-
Grant·A
Director
$0
213 sh
Own +3%
-
Grant·A
James Chao KEY
Senior Chairman
$0
3.9K sh
Own +8%
-
Grant·A
Albert Chao KEY
Executive Chairman
$0
6.2K sh
Own +1%
-
Grant·A
EVP, PEM Segment Head
$0
1.3K sh
Own +3%
-
Grant·A
EVP & CFO
$0
1.8K sh
Own +3%
-
Other·F
SVP, HIP Segment Head
$29.2K
295 sh · $98.95
Own -2%
-
Other·F
VP and CAO
$21.1K
213 sh · $98.95
Own -4%
-
Other·F
EVP, Legal & External Affairs
$96.8K
978 sh · $98.95
Own -1%
-
Other·F
Director
$23.9K
242 sh · $98.95
Own -3%
-
Other·F
James Chao KEY
Senior Chairman
$263.6K
2.7K sh · $98.95
Own -5%
-
Other·F
Albert Chao KEY
Executive Chairman
$503.6K
5.1K sh · $98.95
Own -1%
-
Other·F
EVP, PEM Segment Head
$89.4K
903 sh · $98.95
Own -2%
-
Other·F
EVP & CFO
$119.6K
1.2K sh · $98.95
Own -2%
-
Exercise·M
SVP, HIP Segment Head
$0
977 sh
Own New
-
Exercise·M
SVP, HIP Segment Head
$0
977 sh
Own +8%
-
Exercise·M
VP and CAO
$0
706 sh
Own New
-
Exercise·M
VP and CAO
$0
706 sh
Own +16%
-
Exercise·M
EVP, Legal & External Affairs
$0
3.8K sh
Own New
-
Exercise·M
EVP, Legal & External Affairs
$0
3.8K sh
Own +5%
-
Exercise·M
Director
$0
570 sh
Own New
-
Exercise·M
Director
$0
570 sh
Own +8%
-
Exercise·M
James Chao KEY
Senior Chairman
$0
10.4K sh
Own New
-
Exercise·M
James Chao KEY
Senior Chairman
$0
10.4K sh
Own +26%
-
Exercise·M
Albert Chao KEY
Executive Chairman
$0
16.6K sh
Own New
-
Exercise·M
Albert Chao KEY
Executive Chairman
$0
16.6K sh
Own +3%
-
Exercise·M
EVP, PEM Segment Head
$0
3.5K sh
Own New
-
Exercise·M
EVP, PEM Segment Head
$0
3.5K sh
Own +10%
-
Exercise·M
EVP & CFO
$0
4.8K sh
Own New
-
Exercise·M
EVP & CFO
$0
4.8K sh
Own +8%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 15, 2026 | Jonathan Baksht KEY | Grant A | 20.6K | $0 |
| May 13, 2026 | Mark Steven Bender KEY | Other F | 5.3K | $514.3K |
| May 12, 2026 | Mark Steven Bender KEY | Exercise M | 13.2K | $0 |
| May 12, 2026 | Mark Steven Bender KEY | Exercise M | 13.2K | $0 |
| Apr 2, 2026 | Brian John Powers | Grant A | 2.0K | $0 |
| Mar 27, 2026 | Mark Steven Bender KEY | Sell S | 16.4K | $1.8M |
| Mar 27, 2026 | Robert F. Buesinger | Sell S | 4.0K | $461.0K |
| Feb 27, 2026 | Mark Steven Bender KEY | Exercise M | 6.5K | $0 |
| Feb 27, 2026 | Mark Steven Bender KEY | Exercise M | 6.2K | $0 |
| Feb 27, 2026 | Mark Steven Bender KEY | Sell S | 421 | $42.7K |
| Feb 27, 2026 | Mark Steven Bender KEY | Sell S | 17.0K | $1.7M |
| Feb 27, 2026 | Mark Steven Bender KEY | Other D | 12.7K | $1.2M |
| Feb 27, 2026 | Mark Steven Bender KEY | Exercise M | 6.5K | $562.0K |
| Feb 27, 2026 | Mark Steven Bender KEY | Exercise M | 6.2K | $408.0K |
| Feb 25, 2026 | Jonathan Baksht KEY | Grant A | 26.7K | $0 |
| Feb 25, 2026 | Jonathan Baksht KEY | Grant A | 18.1K | $0 |
| Feb 20, 2026 | Scott Thomas Szwejbka | Grant A | 4.0K | $0 |
| Feb 20, 2026 | Scott Thomas Szwejbka | Grant A | 14.6K | $0 |
| Feb 20, 2026 | Scott Thomas Szwejbka | Other F | 91 | $8.6K |
| Feb 20, 2026 | Jeffrey Adam Holy | Grant A | 2.5K | $0 |
| Feb 20, 2026 | Jeffrey Adam Holy | Grant A | 1.2K | $0 |
| Feb 20, 2026 | Jeffrey Adam Holy | Grant A | 4.4K | $0 |
| Feb 20, 2026 | Jeffrey Adam Holy | Other F | 81 | $7.6K |
| Feb 20, 2026 | Jean-Marc Gilson KEY | Grant A | 29.8K | $0 |
| Feb 20, 2026 | Jean-Marc Gilson KEY | Grant A | 109.1K | $0 |
| Feb 20, 2026 | Benjamin L. Ederington | Grant A | 7.0K | $0 |
| Feb 20, 2026 | Benjamin L. Ederington | Grant A | 25.7K | $0 |
| Feb 20, 2026 | Benjamin L. Ederington | Other F | 357 | $33.6K |
| Feb 20, 2026 | John Tsung-Chen Chao | Grant A | 2.4K | $0 |
| Feb 20, 2026 | John Tsung-Chen Chao | Grant A | 1.1K | $0 |
| Feb 20, 2026 | John Tsung-Chen Chao | Grant A | 4.0K | $0 |
| Feb 20, 2026 | John Tsung-Chen Chao | Other F | 91 | $8.6K |
| Feb 20, 2026 | James Chao KEY | Grant A | 7.5K | $0 |
| Feb 20, 2026 | James Chao KEY | Grant A | 27.4K | $0 |
| Feb 20, 2026 | James Chao KEY | Other F | 1.6K | $147.6K |
| Feb 20, 2026 | Albert Chao KEY | Grant A | 14.9K | $0 |
| Feb 20, 2026 | Albert Chao KEY | Grant A | 54.8K | $0 |
| Feb 20, 2026 | Albert Chao KEY | Other F | 2.5K | $235.3K |
| Feb 20, 2026 | Robert F. Buesinger | Grant A | 5.3K | $0 |
| Feb 20, 2026 | Robert F. Buesinger | Grant A | 19.4K | $0 |
| Feb 20, 2026 | Robert F. Buesinger | Other F | 326 | $30.7K |
| Feb 20, 2026 | Mark Steven Bender KEY | Grant A | 7.7K | $0 |
| Feb 20, 2026 | Mark Steven Bender KEY | Grant A | 28.4K | $0 |
| Feb 20, 2026 | Mark Steven Bender KEY | Other F | 445 | $41.9K |
| Feb 20, 2026 | Bhavesh V. Patel | Grant A | 1.9K | $0 |
| Feb 19, 2026 | Scott Thomas Szwejbka | Grant A | 365 | $0 |
| Feb 19, 2026 | Jeffrey Adam Holy | Grant A | 264 | $0 |
| Feb 19, 2026 | Benjamin L. Ederington | Grant A | 1.4K | $0 |
| Feb 19, 2026 | John Tsung-Chen Chao | Grant A | 213 | $0 |
| Feb 19, 2026 | James Chao KEY | Grant A | 3.9K | $0 |
| Feb 19, 2026 | Albert Chao KEY | Grant A | 6.2K | $0 |
| Feb 19, 2026 | Robert F. Buesinger | Grant A | 1.3K | $0 |
| Feb 19, 2026 | Mark Steven Bender KEY | Grant A | 1.8K | $0 |
| Feb 18, 2026 | Scott Thomas Szwejbka | Other F | 295 | $29.2K |
| Feb 18, 2026 | Jeffrey Adam Holy | Other F | 213 | $21.1K |
| Feb 18, 2026 | Benjamin L. Ederington | Other F | 978 | $96.8K |
| Feb 18, 2026 | John Tsung-Chen Chao | Other F | 242 | $23.9K |
| Feb 18, 2026 | James Chao KEY | Other F | 2.7K | $263.6K |
| Feb 18, 2026 | Albert Chao KEY | Other F | 5.1K | $503.6K |
| Feb 18, 2026 | Robert F. Buesinger | Other F | 903 | $89.4K |
| Feb 18, 2026 | Mark Steven Bender KEY | Other F | 1.2K | $119.6K |
| Feb 17, 2026 | Scott Thomas Szwejbka | Exercise M | 977 | $0 |
| Feb 17, 2026 | Scott Thomas Szwejbka | Exercise M | 977 | $0 |
| Feb 17, 2026 | Jeffrey Adam Holy | Exercise M | 706 | $0 |
| Feb 17, 2026 | Jeffrey Adam Holy | Exercise M | 706 | $0 |
| Feb 17, 2026 | Benjamin L. Ederington | Exercise M | 3.8K | $0 |
| Feb 17, 2026 | Benjamin L. Ederington | Exercise M | 3.8K | $0 |
| Feb 17, 2026 | John Tsung-Chen Chao | Exercise M | 570 | $0 |
| Feb 17, 2026 | John Tsung-Chen Chao | Exercise M | 570 | $0 |
| Feb 17, 2026 | James Chao KEY | Exercise M | 10.4K | $0 |
| Feb 17, 2026 | James Chao KEY | Exercise M | 10.4K | $0 |
| Feb 17, 2026 | Albert Chao KEY | Exercise M | 16.6K | $0 |
| Feb 17, 2026 | Albert Chao KEY | Exercise M | 16.6K | $0 |
| Feb 17, 2026 | Robert F. Buesinger | Exercise M | 3.5K | $0 |
| Feb 17, 2026 | Robert F. Buesinger | Exercise M | 3.5K | $0 |
| Feb 17, 2026 | Mark Steven Bender KEY | Exercise M | 4.8K | $0 |
| Feb 17, 2026 | Mark Steven Bender KEY | Exercise M | 4.8K | $0 |
About WLK insider trading
This page tracks insider transactions for WESTLAKE CORP (WLK) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.