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Transaction Types Key To InsiderInsights' Infobase
 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
WESTLAKE CORP: WLK
Price: 8/7/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$77.47 $124.23 $56.33 $9,900 128 1,143 2.7% 16.0% 35.42% 74.49%
Exch Sector Industry Sub-Industry
NYSE Manufacturing Chemicals And Allied Products Industrial Organic Chemicals
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#
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
JANSSENS THOMAS J
VP,OO
JB
---
1,313
---
2/18/25
---
---
15,625
9.2
D
R
2/20/25 - 2:38:43 pm
2
    
 
HOLY JEFFREY ADAM
VP,CAO
JB
---
702
---
2/18/25
---
---
3,702
23.4
D
R
2/20/25 - 2:36:06 pm
3
    
 
CHAO JAMES
CB,DIR
JB
---
8,796
---
2/18/25
---
---
47,347
22.8
D
R
2/20/25 - 2:34:52 pm
4
    
 
CHAO ALBERT
CB,DIR
JB
---
17,972
---
2/18/25
---
---
572,888
3.2
D
R
2/20/25 - 2:30:50 pm
5
    
 
JANSSENS THOMAS J
VP,OO
JS
$91,079
790
---
2/18/25
---
$115.29
14,312
-5.2
D
R
2/19/25 - 9:19:09 am
6
    
 
EDERINGTON L BENJAMIN
VP,GC,CAO
JS
$218,475
1,895
---
2/18/25
---
$115.29
63,972
-2.9
D
R
2/19/25 - 9:18:45 am
7
    
 
JANSSENS THOMAS J
VP,OO
JB
---
3,039
---
2/14/25
---
---
15,102
25.2
D
R
2/19/25 - 9:19:09 am
8
    
 
EDERINGTON L BENJAMIN
VP,GC,CAO
JB
---
7,597
---
2/14/25
---
---
65,867
13.0
D
R
2/19/25 - 9:18:45 am
9
    
 
CREGG ROGER A
DIR
3
---
---
---
12/10/24
---
---
---
---
---
---
12/10/24 - 7:05:08 pm
10
    
 
CHAO DAVID TSUNG HUNG
DIR
S
$225,888
1,750
---
11/29/24
---
$129.08
7,784
-18.4
D
---
12/2/24 - 7:49:03 am
11
    
 
CHAO DAVID TSUNG HUNG
DIR
S
$227,500
1,750
---
11/22/24
---
$130.00
9,534
-15.5
D
---
11/25/24 - 8:21:11 am
12
    
 
CHAO JAMES
CB,DIR
JS
---
6,642
---
8/30/24
---
---
38,551
-14.7
D
---
9/3/24 - 9:39:55 am
13
    
 
JANSSENS THOMAS J
VP,OO
OS
$2,221,930
14,864
---
8/23/24
---
$149.48
12,063
-55.2
D
---
8/26/24 - 9:40:02 am
14
    
 
JANSSENS THOMAS J
VP,OO
OE
$1,122,347
14,864
---
8/23/24
$65.81
$86.54
26,927
123.2
D
---
8/26/24 - 9:40:02 am
15
1y
14
43%
8%
2
CHAO ALBERT
CB,DIR
OS
$6,641,279
45,298
---
8/16/24
$146.61
$147.04
554,916
-7.5
D
---
8/19/24 - 2:50:42 pm
16
    
 
CHAO ALBERT
CB,DIR
OE
$3,084,341
45,298
---
8/16/24
---
$68.09
600,214
8.2
D
---
8/19/24 - 2:50:42 pm
17
    
 
EDERINGTON L BENJAMIN
VP,GC,CAO
JS
$168,129
1,156
---
8/14/24
---
$145.44
58,270
-1.9
D
R
8/15/24 - 11:00:58 am
18
    
 
BENDER MARK STEVEN
VP,CFO
JS
$168,129
1,156
---
8/14/24
---
$145.44
42,138
-2.7
D
R
8/15/24 - 11:00:45 am
19
    
 
BUESINGER ROBERT F
VP,TO
JS
$403,160
2,772
---
8/14/24
---
$145.44
21,923
-11.2
D
R
8/15/24 - 11:00:32 am
20
    
 
EDERINGTON L BENJAMIN
VP,GC,CAO
JB
---
2,938
---
8/13/24
---
---
59,426
5.2
D
R
8/15/24 - 11:00:58 am
21
    
 
BENDER MARK STEVEN
VP,CFO
JB
---
2,938
---
8/13/24
---
---
43,294
7.3
D
R
8/15/24 - 11:00:45 am
22
    
 
BUESINGER ROBERT F
VP,TO
JB
---
7,051
---
8/13/24
---
---
24,695
40.0
D
R
8/15/24 - 11:00:32 am
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