List of insiders holdings for WESTLAKE CORP:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
# | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
1 | Jenkins Dorothy C Director 10% Owner | 2022-08-15 15:23:58 | 75,224 93,405,554 | 93,480,778 | Form 4 |
2 | TTWF LP 10% Owner | 2024-02-14 16:15:51 | 93,405,554 0 | 93,405,554 | Form 13G |
3 | TTWFGP LLC 10% Owner | 2020-08-20 14:09:23 | 1,395,000 92,010,554 | 93,405,554 | Form 4/A |
4 | Chao Albert Executive Chairman | 2025-02-24 14:10:55 | 636,379 0 | 636,379 | Form 4 |
5 | Ederington L. Benjamin EVP, PEM, GC and CAO | 2025-02-24 14:14:10 | 99,464 0 | 99,464 | Form 4 |
6 | Bender Mark Steven EVP & CFO | 2025-02-24 14:10:23 | 82,638 0 | 82,638 | Form 4 |
7 | Kearns Roger L. COO and EVP, PEM | 2023-03-15 15:22:23 | 39,849 0 | 39,849 | Form 4/A |
8 | Chao James Senior Chairman | 2025-08-29 07:18:21 | 39,741 0 | 39,741 | Form 4 |
9 | Morse Wayne D Sr VP, Vinyls | 2010-03-15 10:03:20 | 35,265 0 | 35,265 | Form 4/A |
10 | Buesinger Robert F. EVP, PEM Segment Head | 2025-06-09 13:59:50 | 34,932 0 | 34,932 | Form 4 |
11 | Chao David Tsung-Hung Director | 2025-08-11 10:17:51 | 11,080 19,423 | 30,503 | Form 4 |
12 | Chao Catherine T. Director | 2025-08-11 10:18:08 | 7,748 19,423 | 27,171 | Form 4 |
13 | Teel Lawrence E. EVP and Special Advisor to CEO | 2021-02-26 08:36:37 | 25,860 0 | 25,860 | Form 4 |
14 | Taylor Jeffrey L Sr VP, Polyethylene | 2015-05-27 16:26:10 | 25,714 0 | 25,714 | Form 4 |
15 | Wallace Stephen VP, General Counsel, Secretary | 2013-08-05 16:51:37 | 25,163 200 | 25,363 | Form 4 |
16 | Janssens Thomas J. SVP, Ops - PEM & Corp Logistic | 2025-02-24 14:13:57 | 24,944 0 | 24,944 | Form 4 |
17 | Wilder Warren W Senior Vice President | 2008-03-18 17:04:59 | 24,085 0 | 24,085 | Form 4 |
18 | NORTHCUTT R BRUCE Director | 2025-08-11 10:17:13 | 23,351 0 | 23,351 | Form 4 |
19 | Graff Michael J Director | 2025-08-11 10:18:24 | 23,310 0 | 23,310 | Form 4 |
20 | RILEY H JOHN JR Director | 2019-03-20 14:06:28 | 22,652 0 | 22,652 | Form 4 |
21 | Condon Donald Marion Jr Sr VP, Corp Bus Dev | 2013-03-15 17:07:50 | 17,647 0 | 17,647 | Form 4 |
22 | Bates Simon VP, Building Products | 2016-09-12 16:58:19 | 14,930 0 | 14,930 | Form 4 |
23 | Sheets Jeffrey Wayne Director | 2025-08-11 10:15:45 | 14,927 0 | 14,927 | Form 4 |
24 | Schubert Lawrence Vice President, Polyethylene | 2017-03-08 16:02:37 | 14,093 0 | 14,093 | Form 3 |
25 | Lubel Kimberly S Director | 2025-08-11 10:16:23 | 13,821 0 | 13,821 | Form 4 |
26 | Szwejbka Scott Thomas SVP, HIP Segment Head | 2025-10-03 12:20:29 | 12,817 0 | 12,817 | Form 4 |
27 | Haas Marius Director | 2024-08-12 11:24:27 | 12,759 0 | 12,759 | Form 4 |
28 | MCCOLLUM MARK A Director | 2025-08-11 10:16:40 | 11,824 0 | 11,824 | Form 4 |
29 | LUKENS MAX L Director | 2019-08-19 09:42:56 | 11,509 0 | 11,509 | Form 4 |
30 | BARNETT E WILLIAM Director | 2012-12-03 16:56:24 | 11,447 0 | 11,447 | Form 4 |
31 | BLAKELY ROBERT T Director | 2018-08-22 09:29:25 | 10,989 0 | 10,989 | Form 4 |
32 | Hansen David R Sr VP Adminstration | 2015-02-24 16:26:40 | 9,814 0 | 9,814 | Form 4 |
33 | Kenner Andrew SVP, Operations | 2022-02-22 07:07:59 | 9,229 0 | 9,229 | Form 4 |
34 | Gilson Jean-Marc President and CEO | 2025-03-04 17:30:04 | 8,994 0 | 8,994 | Form 4 |
35 | Holy Jeffrey Adam VP and CAO | 2025-02-24 14:14:28 | 8,164 0 | 8,164 | Form 4 |
36 | Keng Tai Li Vice President and Treasurer | 2004-08-18 14:37:45 | 7,800 0 | 7,800 | Form 4 |
37 | DREESSEN RUTH I Senior Vice President and CFO | 2005-09-13 12:30:21 | 7,435 0 | 7,435 | Form 4 |
38 | Chao John Tsung-chen Director | 2025-03-07 07:00:04 | 7,038 0 | 7,038 | Form 4/A |
39 | Zoeller Johnathan Stevan VP and CAO | 2024-03-22 14:55:01 | 6,751 0 | 6,751 | Form 4 |
40 | Mattina Michael J. Sr. VP, Polyethylene | 2017-02-16 16:15:16 | 6,506 0 | 6,506 | Form 4 |
41 | Sabat Carolyn Chao Director | 2025-08-11 10:16:56 | 5,748 0 | 5,748 | Form 4 |
42 | Mangieri George J VP & Chief Accounting Officer | 2020-02-19 15:34:14 | 4,671 0 | 4,671 | Form 4 |
43 | GIBBONS JOHN D Senior Vice President & CFO | 2006-05-17 16:36:31 | 4,249 0 | 4,249 | Form 4 |
44 | Whitaker Gilbert R Jr Director | 2006-08-23 16:22:57 | 2,957 0 | 2,957 | Form 4 |
45 | Johannesen Andrew Vice President & Treasurer | 2011-01-06 16:03:22 | 2,780 0 | 2,780 | Form 4 |
46 | CREGG ROGER A Director | 2025-08-11 10:16:03 | 2,168 0 | 2,168 | Form 4 |