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 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: 2/21/25 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
$109.71 $162.64 $108.56 $14,120 129 591 1.9% 4.5% 27.88% 73.49%
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
    
 
EDERINGTON L BENJAMIN
VP,GC,CAO
JS
$587,452
5,268
---
2/19/25
$111.46
$112.76
71,878
-6.8
D
R
2/20/25 - 2:40:06 pm
2
    
 
BUESINGER ROBERT F
VP,TO
JS
$447,725
4,015
---
2/19/25
$111.46
$112.76
30,831
-11.5
D
R
2/20/25 - 2:39:49 pm
3
    
 
BENDER MARK STEVEN
VP,CFO
JS
$495,773
4,446
---
2/19/25
$111.46
$112.76
51,679
-7.9
D
R
2/20/25 - 2:39:35 pm
4
    
 
JANSSENS THOMAS J
VP,OO
JS
$37,466
336
---
2/19/25
$111.46
$112.53
15,289
-2.2
D
R
2/20/25 - 2:38:43 pm
5
    
 
HOLY JEFFREY ADAM
VP,CAO
JS
$24,421
219
---
2/19/25
$111.46
$112.76
3,483
-5.9
D
R
2/20/25 - 2:36:06 pm
6
    
 
CHAO JAMES
CB,DIR
JS
$255,031
2,287
---
2/19/25
$111.46
$112.76
45,060
-4.8
D
R
2/20/25 - 2:34:52 pm
7
    
 
CHAO ALBERT
CB,DIR
JS
$676,767
6,069
---
2/19/25
$111.46
$112.73
566,819
-1.1
D
R
2/20/25 - 2:30:50 pm
8
    
 
CHAO JOHN TSUNG CHEN
DIR
JB
---
513
---
2/18/25
---
---
6,709
8.3
D
R
2/20/25 - 2:41:30 pm
9
    
 
EDERINGTON L BENJAMIN
VP,GC,CAO
JB
---
13,174
---
2/18/25
---
---
77,146
20.6
D
R
2/20/25 - 2:40:06 pm
10
    
 
BUESINGER ROBERT F
VP,TO
JB
---
12,923
---
2/18/25
---
---
34,846
58.9
D
R
2/20/25 - 2:39:49 pm
11
    
 
BENDER MARK STEVEN
VP,CFO
JB
---
13,987
---
2/18/25
---
---
56,125
33.2
D
R
2/20/25 - 2:39:35 pm
12
    
 
JANSSENS THOMAS J
VP,OO
JB
---
1,313
---
2/18/25
---
---
15,625
9.2
D
R
2/20/25 - 2:38:43 pm
13
    
 
HOLY JEFFREY ADAM
VP,CAO
JB
---
702
---
2/18/25
---
---
3,702
23.4
D
R
2/20/25 - 2:36:06 pm
14
    
 
CHAO JAMES
CB,DIR
JB
---
8,796
---
2/18/25
---
---
47,347
22.8
D
R
2/20/25 - 2:34:52 pm
15
    
 
CHAO ALBERT
CB,DIR
JB
---
17,972
---
2/18/25
---
---
572,888
3.2
D
R
2/20/25 - 2:30:50 pm
16
    
 
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
17
    
 
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
18
    
 
JANSSENS THOMAS J
VP,OO
JB
---
3,039
---
2/14/25
---
---
15,102
25.2
D
R
2/19/25 - 9:19:09 am
19
    
 
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
20
    
 
CREGG ROGER A
DIR
3
---
---
---
12/10/24
---
---
---
---
---
---
12/10/24 - 7:05:08 pm
21
    
 
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
22
    
 
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
23
    
 
CHAO JAMES
CB,DIR
JS
---
6,642
---
8/30/24
---
---
38,551
-14.7
D
---
9/3/24 - 9:39:55 am
24
    
 
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
25
    
 
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
26
1y
13
38%
12%
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
27
    
 
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
28
    
 
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
29
    
 
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
30
    
 
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
31
    
 
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
32
    
 
BENDER MARK STEVEN
VP,CFO
JB
---
2,938
---
8/13/24
---
---
43,294
7.3
D
R
8/15/24 - 11:00:45 am
33
    
 
BUESINGER ROBERT F
VP,TO
JB
---
7,051
---
8/13/24
---
---
24,695
40.0
D
R
8/15/24 - 11:00:32 am
34
    
 
SABAT CAROLYN CHAO
DIR
JB
---
1,136
---
8/11/24
---
---
2,452
86.3
D
R
8/12/24 - 11:26:40 am
35
    
 
CHAO CATHERINE T
DIR
JB
---
1,136
---
8/11/24
---
---
4,452
34.3
D
R
8/12/24 - 11:26:24 am
36
    
 
SHEETS JEFFREY WAYNE
DIR
JB
---
1,136
---
8/11/24
---
---
11,631
10.8
D
R
8/12/24 - 11:26:04 am
37
    
 
NORTHCUTT R BRUCE
DIR
JB
---
1,136
---
8/11/24
---
---
20,055
6.0
D
R
8/12/24 - 11:25:43 am
38
    
 
LUBEL KIMBERLY S
DIR
JB
---
1,136
---
8/11/24
---
---
10,525
12.1
D
R
8/12/24 - 11:25:16 am
39
    
 
MCCOLLUM MARK A
DIR
JB
---
1,136
---
8/11/24
---
---
8,528
15.4
D
R
8/12/24 - 11:24:56 am
40
    
 
HAAS MARIUS
DIR
JB
---
1,136
---
8/11/24
---
---
11,631
10.8
D
R
8/12/24 - 11:24:27 am
41
    
 
GRAFF MICHAEL J
DIR
JB
---
1,136
---
8/11/24
---
---
20,014
6.0
D
R
8/12/24 - 11:24:09 am
42
    
 
CHAO DAVID TSUNG HUNG
DIR
JB
---
1,136
---
8/11/24
---
---
11,284
11.2
D
R
8/12/24 - 11:23:50 am
43
    
 
GILSON JEAN MARC
PR,CEO
3
---
---
---
7/15/24
---
---
---
---
---
---
7/15/24 - 12:15:07 pm
44
    
 
SABAT CAROLYN CHAO
DIR
JB
---
1,316
---
5/12/24
---
---
1,316
New
D
R
5/13/24 - 9:25:26 am
45
    
 
CHAO CATHERINE T
DIR
JB
---
1,316
---
5/12/24
---
---
3,316
65.8
D
R
5/13/24 - 9:22:59 am
46
1y
22
41%
13%
1
BUESINGER ROBERT F
VP,TO
S
$554,750
3,500
---
5/9/24
---
$158.50
17,644
-16.6
D
---
5/13/24 - 11:24:32 am
47
1y
22
41%
13%
1
BUESINGER ROBERT F
VP,TO
OS
$493,448
3,133
---
5/7/24
---
$157.50
21,144
-12.9
D
---
5/8/24 - 1:15:19 pm
48
    
 
BUESINGER ROBERT F
VP,TO
OE
$384,262
3,133
---
5/7/24
---
$122.65
24,277
14.8
D
---
5/8/24 - 1:15:19 pm
49
1y
35
40%
12%
2
BENDER MARK STEVEN
VP,CFO
S
$753,341
4,950
---
5/3/24
---
$152.19
40,356
-10.9
D
---
5/6/24 - 9:21:17 am
50
    
 
HOLY JEFFREY ADAM
VP,CAO
3
---
---
---
4/25/24
---
---
3,000
---
D
R
5/2/24 - 9:41:45 am
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