WESTLAKE CORP — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Sabat Carolyn Chao | — | Option Exercise | 1,316 | — | — | 1,316 | May 12, 2024 |
| Chao Catherine T. | — | Option Exercise | 1,316 | — | — | 3,316 | May 12, 2024 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Sale | 3,500 | $158.50 | $554,750 | 17,644 | May 9, 2024 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Disposition | 3,133 | $157.50 | $493,448 | 21,144 | May 7, 2024 |
| Bender Mark Steven | EVP & CFO | Sale | 4,950 | $152.19 | $753,341 | 40,356 | May 3, 2024 |
| Chao James | Chairman | Gift | 36,632 | — | — | 45,193 | Mar 28, 2024 |
| Zoeller Johnathan Stevan | VP and CAO | Disposition | 657 | $150.57 | $98,924 | 4,416 | Mar 21, 2024 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Sale | 3,878 | $144.50 | $560,371 | 21,144 | Mar 15, 2024 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Sale | 122 | $144.50 | $17,629 | 25,022 | Mar 13, 2024 |
| Zoeller Johnathan Stevan | VP and CAO | Option Exercise | 719 | $86.54 | $62,222 | 5,135 | Mar 8, 2024 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Option Exercise | 5,005 | $86.54 | $433,133 | 30,149 | Mar 7, 2024 |
| Bender Mark Steven | EVP & CFO | Sale | 4,804 | $141.02 | $677,460 | 45,306 | Mar 6, 2024 |
| Bender Mark Steven | EVP & CFO | Sale | 4,854 | $137.57 | $667,765 | 50,110 | Feb 26, 2024 |
| Janssens Thomas J. | SVP, Ops - PEM & Corp Logistic | Tax Withholding | 88 | $138.65 | $12,201 | 12,063 | Feb 20, 2024 |
| Ederington L. Benjamin | EVP, PEM, GC and CAO | Tax Withholding | 411 | $137.29 | $56,426 | 56,488 | Feb 20, 2024 |
| Chao James | Chairman | Award / Grant | 21,614 | — | — | 84,013 | Feb 20, 2024 |
| Chao Albert | President & CEO | Award / Grant | 39,738 | — | — | 559,886 | Feb 20, 2024 |
| Zoeller Johnathan Stevan | VP and CAO | Option Exercise | 866 | — | — | 5,162 | Feb 16, 2024 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Tax Withholding | 4,083 | $129.92 | $530,463 | 25,546 | Feb 16, 2024 |
| Bender Mark Steven | EVP & CFO | Tax Withholding | 547 | $138.68 | $75,858 | 54,964 | Feb 16, 2024 |
| Chao James | Chairman | Disposition | 57,232 | $128.37 | $7,346,872 | 73,380 | Nov 30, 2023 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Sale | 4,215 | $130.50 | $550,058 | 16,754 | Nov 15, 2023 |
| Chao David Tsung-Hung | — | Gift | 19,423 | — | — | 19,423 | Aug 31, 2023 |
| Chao Catherine T. | — | Gift | 19,423 | — | — | 19,423 | Aug 31, 2023 |
| Chao James | Chairman | Option Exercise | 47,569 | $44.42 | $2,113,015 | 168,209 | Aug 31, 2023 |
| Chao Albert | President & CEO | Disposition | 8,397 | $131.94 | $1,107,900 | 520,465 | Aug 31, 2023 |
| Chao James | Chairman | Option Exercise | 17,735 | $44.42 | $787,789 | 150,696 | Aug 30, 2023 |
| Ederington L. Benjamin | EVP, PEM, GC and CAO | Option Exercise | 13,734 | $61.87 | $849,723 | 61,650 | Aug 30, 2023 |
| Chao Albert | President & CEO | Disposition | 2,315 | $134.60 | $311,599 | 520 | Aug 30, 2023 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Disposition | 4,857 | $134.47 | $653,121 | 20,969 | Aug 30, 2023 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Disposition | 8,100 | $133.83 | $1,084,023 | 20,969 | Aug 29, 2023 |
| Janssens Thomas J. | SVP, Ops - PEM & Corp Logistic | Option Exercise | 1,370 | $108.12 | $148,124 | 13,386 | Aug 29, 2023 |
| Chao David Tsung-Hung | — | Sale | 1,000 | $131.00 | $131,000 | 10,148 | Aug 23, 2023 |
| Zoeller Johnathan Stevan | VP and CAO | Tax Withholding | 144 | $132.11 | $19,024 | 2,560 | Aug 13, 2023 |
| Sheets Jeffrey Wayne | — | Option Exercise | 1,446 | — | — | 10,495 | Aug 12, 2023 |
| NORTHCUTT R BRUCE | — | Option Exercise | 1,446 | — | — | 18,919 | Aug 12, 2023 |
| MCCOLLUM MARK A | — | Option Exercise | 1,446 | — | — | 7,392 | Aug 12, 2023 |
| Lubel Kimberly S | — | Option Exercise | 1,446 | — | — | 9,389 | Aug 12, 2023 |
| Haas Marius | — | Option Exercise | 1,446 | — | — | 10,495 | Aug 12, 2023 |
| Graff Michael J | — | Option Exercise | 1,446 | — | — | 18,878 | Aug 12, 2023 |
| Chao David Tsung-Hung | — | Option Exercise | 1,446 | — | — | 11,148 | Aug 12, 2023 |
| Bender Mark Steven | EVP & CFO | Option Exercise | 12,606 | $86.54 | $1,090,923 | 69,039 | Aug 7, 2023 |
| Zoeller Johnathan Stevan | VP and CAO | Option Exercise | 1,963 | $86.54 | $169,878 | 4,079 | May 19, 2023 |
| Bender Mark Steven | EVP & CFO | Disposition | 1,084 | $120.03 | $130,113 | 44,400 | May 8, 2023 |
| Janssens Thomas J. | SVP, Ops - PEM & Corp Logistic | Tax Withholding | 49 | $105.86 | $5,187 | 9,531 | Mar 13, 2023 |
| Buesinger Robert F. | EVP, HIP, IT & Digital | Tax Withholding | 240 | $105.27 | $25,265 | 20,969 | Mar 13, 2023 |
| Bender Mark Steven | EVP & CFO | Tax Withholding | 5,728 | $104.32 | $597,545 | 44,704 | Mar 13, 2023 |
| Zoeller Johnathan Stevan | VP and CAO | Disposition | 1,689 | $120.65 | $203,778 | 2,493 | Feb 27, 2023 |
| Bender Mark Steven | EVP and CFO | Disposition | 3,000 | $120.50 | $361,500 | 50,432 | Feb 27, 2023 |
| Zoeller Johnathan Stevan | VP and CAO | Tax Withholding | 358 | $104.32 | $37,347 | 2,135 | Feb 17, 2023 |