Insider holders · CIK 0001262823
WESTLAKE CORP · WLK
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Albert ChaoPresident & CEO | 642,880 | 92,010,554 | 92,653,434 | Aug 11, 2026 · 5:45 pm EDT | Form 4 |
| James ChaoChairman | 63,323 | 92,010,554 | 92,073,877 | Feb 20, 2019 · 1:47 pm EST | Form 4 |
| Dorothy C JenkinsDirector | 58,005 | 92,010,554 | 92,068,559 | Aug 22, 2018 · 9:28 am EDT | Form 4 |
| John Tsung-chen ChaoDirector | — | 92,010,554 | 92,010,554 | Aug 20, 2018 · 10:22 am EDT | Form 3 |
| David Tsung-Hung ChaoDirector | 11,080 | 19,423 | 30,503 | Aug 10, 2026 · 1:50 pm EDT | Form 4 |
| Catherine T. ChaoDirector | 7,748 | 19,423 | 27,171 | Aug 10, 2026 · 1:50 pm EDT | Form 4 |
| H John Riley Jr.Director | 25,979 | — | 25,979 | Aug 22, 2018 · 9:32 am EDT | Form 4 |
| David R HansenSr VP Adminstration | 25,807 | — | 25,807 | Feb 20, 2015 · 4:08 pm EST | Form 4 |
| R Bruce NorthcuttDirector | 23,351 | — | 23,351 | Aug 10, 2026 · 1:53 pm EDT | Form 4 |
| Michael J GraffDirector | 23,310 | — | 23,310 | Aug 10, 2026 · 1:51 pm EDT | Form 4 |
| Mark Steven BenderEVP and CFO | 20,614 | — | 20,614 | Feb 20, 2019 · 1:44 pm EST | Form 4 |
| Jeffrey L TaylorSr VP, Polyethylene | 20,206 | — | 20,206 | May 27, 2015 · 4:26 pm EDT | Form 4 |
| L. Benjamin EderingtonSVP, GC, CAO and Secretary | 15,347 | — | 15,347 | Feb 20, 2019 · 1:49 pm EST | Form 4 |
| Simon BatesVP, Building Products | 14,930 | — | 14,930 | Sep 12, 2016 · 4:58 pm EDT | Form 4 |
| Jeffrey Wayne SheetsDirector | 14,927 | — | 14,927 | Aug 10, 2026 · 1:54 pm EDT | Form 4 |
| Kimberly S LubelDirector | 13,821 | — | 13,821 | Aug 10, 2026 · 1:52 pm EDT | Form 4 |
| Andrew KennerSVP - Chemical Manufacturing | 13,488 | — | 13,488 | Feb 20, 2019 · 1:50 pm EST | Form 4 |
| Mark A McCollumDirector | 11,824 | — | 11,824 | Aug 10, 2026 · 1:52 pm EDT | Form 4 |
| Robert T BlakelyDirector | 10,989 | — | 10,989 | Aug 22, 2018 · 9:29 am EDT | Form 4 |
| Max L LukensDirector | 6,607 | — | 6,607 | Aug 22, 2018 · 9:30 am EDT | Form 4 |
| Michael J. MattinaSr. VP, Polyethylene | 6,506 | — | 6,506 | Feb 16, 2017 · 4:15 pm EST | Form 4 |
| Carolyn Chao SabatDirector | 5,748 | — | 5,748 | Aug 10, 2026 · 1:53 pm EDT | Form 4 |
| Robert F. BuesingerEVP, Vinyl Products | 5,211 | — | 5,211 | Feb 20, 2019 · 1:45 pm EST | Form 4 |
| Lawrence E. TeelEVP, Olefins | 4,398 | — | 4,398 | Feb 20, 2019 · 1:52 pm EST | Form 4 |
| Roger A CreggDirector | 3,507 | — | 3,507 | Aug 10, 2026 · 1:51 pm EDT | Form 4 |
| George J MangieriSVP & Chief Accounting Officer | 3,165 | — | 3,165 | Feb 20, 2019 · 1:51 pm EST | Form 4 |
| Marius HaasDirector | 1,090 | — | 1,090 | Jan 7, 2019 · 3:07 pm EST | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.