Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Westlake Corp (WLK) since 2014 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Westlake Corp. Table 2 shows the detailed insider transactions. This company's CIK number is 1262823.
Total stock buying since 2014: $52,711,113.
Total stock sales since 2014: $121,493,848.
Total stock option exercises since 2014: $78,597,995.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 83 | $7,751 | 83 | $6,034 | 80,016 | $0 |
| 2024 | 0 | $0 | 25,608 | $3,684,697 | 152,030 | $6,215,216 |
| 2023 | 0 | $0 | 5,215 | $681,057 | 528,618 | $32,940,824 |
| 2022 | 0 | $0 | 149,447 | $18,985,592 | 204,063 | $9,138,429 |
| 2021 | 3,000 | $258,629 | 168,449 | $15,512,386 | 262,566 | $8,291,654 |
| 2020 | 1,463,336 | $52,444,733 | 143,841 | $10,058,387 | 351,814 | $4,468,423 |
| 2019 | 0 | $0 | 5,300 | $375,722 | 127,130 | $86,985 |
| 2018 | 0 | $0 | 291,095 | $28,655,401 | 319,044 | $6,339,672 |
| 2017 | 0 | $0 | 390,758 | $34,512,378 | 386,258 | $8,813,507 |
| 2016 | 0 | $0 | 131,868 | $7,027,591 | 105,838 | $1,615,105 |
| 2015 | 0 | $0 | 28,975 | $1,994,603 | 28,370 | $688,180 |
| 2014 | 0 | $0 | 0 | $0 | 3,516 | $0 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-05 | 0 | $0 | 83 | $6,034 | 0 | $0 |
| 2025-04 | 83 | $7,751 | 0 | $0 | 0 | $0 |
| 2025-02 | 0 | $0 | 0 | $0 | 80,016 | $0 |
| 2024-11 | 0 | $0 | 3,500 | $453,388 | 0 | $0 |
| 2024-08 | 0 | $0 | 0 | $0 | 83,313 | $4,234,709 |
| 2024-05 | 0 | $0 | 8,450 | $1,308,090 | 5,765 | $384,262 |
| 2024-03 | 0 | $0 | 8,804 | $1,255,455 | 16,103 | $1,596,245 |
| 2024-02 | 0 | $0 | 4,854 | $667,764 | 46,849 | $0 |
| 2023-11 | 0 | $0 | 4,215 | $550,057 | 68,213 | $5,922,457 |
| 2023-08 | 0 | $0 | 1,000 | $131,000 | 380,530 | $26,456,719 |
| 2023-05 | 0 | $0 | 0 | $0 | 3,047 | $241,215 |
| 2023-02 | 0 | $0 | 0 | $0 | 76,828 | $320,433 |
| 2022-08 | 0 | $0 | 1,542 | $156,977 | 14,104 | $0 |
| 2022-05 | 0 | $0 | 73,260 | $9,698,121 | 73,260 | $4,360,281 |
| 2022-03 | 0 | $0 | 74,645 | $9,130,494 | 64,915 | $4,778,148 |
| 2022-02 | 0 | $0 | 0 | $0 | 51,784 | $0 |
| 2021-12 | 0 | $0 | 61,574 | $5,634,543 | 77,994 | $2,343,952 |
| 2021-11 | 0 | $0 | 9,356 | $932,153 | 0 | $0 |
| 2021-08 | 3,000 | $258,629 | 0 | $0 | 22,586 | $0 |
| 2021-05 | 0 | $0 | 5,000 | $525,000 | 3,780 | $0 |
| 2021-03 | 0 | $0 | 58,064 | $5,422,034 | 65,064 | $4,083,548 |
| 2021-02 | 0 | $0 | 34,455 | $2,998,656 | 93,142 | $1,864,154 |
| 2020-11 | 0 | $0 | 92,249 | $6,838,015 | 84,725 | $2,577,526 |
| 2020-08 | 0 | $0 | 0 | $0 | 19,096 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-05-27 | Buesinger Robert F. (EVP, PEM Segment Head) | Sale | 83 | 72.70 | 6,034 |
| 2025-04-22 | Buesinger Robert F. (EVP, PEM Segment Head) | Buy | 83 | 93.39 | 7,751 |
| 2025-02-18 | Holy Jeffrey Adam (VP and CAO) | Option Ex | 702 | .00 | 0 |
| 2025-02-18 | Janssens Thomas J. (SVP, Ops - PEM & Corp Logistic) | Option Ex | 1,313 | .00 | 0 |
| 2025-02-18 | Chao John Tsung-chen | Option Ex | 513 | .00 | 0 |
| 2025-02-18 | Ederington L. Benjamin (EVP, PEM, GC and CAO) | Option Ex | 13,174 | .00 | 0 |
| 2025-02-18 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 12,923 | .00 | 0 |
| 2025-02-18 | Bender Mark Steven (EVP & CFO) | Option Ex | 13,987 | .00 | 0 |
| 2025-02-18 | Chao James (Senior Chairman) | Option Ex | 8,796 | .00 | 0 |
| 2025-02-18 | Chao Albert (Executive Chairman) | Option Ex | 17,972 | .00 | 0 |
| 2025-02-14 | Janssens Thomas J. (SVP, Ops - PEM & Corp Logistic) | Option Ex | 3,039 | .00 | 0 |
| 2025-02-14 | Ederington L. Benjamin (EVP, PEM, GC and CAO) | Option Ex | 7,597 | .00 | 0 |
| 2024-11-29 | Chao David Tsung-hung | Sale | 1,750 | 129.08 | 225,888 |
| 2024-11-22 | Chao David Tsung-hung | Sale | 1,750 | 130.00 | 227,500 |
| 2024-08-23 | Janssens Thomas J. (SVP, Ops - PEM & Corp Logistic) | Option Ex | 14,864 | 77.39 | 1,150,369 |
| 2024-08-16 | Chao Albert (Executive Chairman) | Option Ex | 45,298 | 68.09 | 3,084,340 |
| 2024-08-13 | Ederington L. Benjamin (EVP, PEM, GC and CAO) | Option Ex | 2,938 | .00 | 0 |
| 2024-08-13 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 7,051 | .00 | 0 |
| 2024-08-13 | Bender Mark Steven (EVP & CFO) | Option Ex | 2,938 | .00 | 0 |
| 2024-08-11 | Chao Catherine T. | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Sabat Carolyn Chao | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Chao David Tsung-hung | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Haas Marius | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Graff Michael J | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Lubel Kimberly S | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Sheets Jeffrey Wayne | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Northcutt R Bruce | Option Ex | 1,136 | .00 | 0 |
| 2024-08-11 | Mccollum Mark A | Option Ex | 1,136 | .00 | 0 |
| 2024-05-12 | Chao Catherine T. | Option Ex | 1,316 | .00 | 0 |
| 2024-05-12 | Sabat Carolyn Chao | Option Ex | 1,316 | .00 | 0 |
| 2024-05-09 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 3,500 | 158.50 | 554,750 |
| 2024-05-07 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 3,133 | 122.65 | 384,262 |
| 2024-05-03 | Bender Mark Steven (EVP & CFO) | Sale | 4,950 | 152.19 | 753,340 |
| 2024-03-21 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 657 | 105.77 | 69,489 |
| 2024-03-15 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 3,878 | 144.50 | 560,371 |
| 2024-03-13 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 122 | 144.50 | 17,629 |
| 2024-03-08 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 2,776 | 105.77 | 293,611 |
| 2024-03-07 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 12,670 | 97.33 | 1,233,145 |
| 2024-03-06 | Bender Mark Steven (EVP & CFO) | Sale | 4,804 | 141.02 | 677,455 |
| 2024-02-26 | Bender Mark Steven (EVP & CFO) | Sale | 4,854 | 137.57 | 667,764 |
| 2024-02-19 | Janssens Thomas J. (SVP, Ops - PEM & Corp Logistic) | Option Ex | 1,170 | .00 | 0 |
| 2024-02-19 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 866 | .00 | 0 |
| 2024-02-19 | Ederington L. Benjamin (EVP, PEM, GC and CAO) | Option Ex | 4,388 | .00 | 0 |
| 2024-02-19 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 4,283 | .00 | 0 |
| 2024-02-19 | Bender Mark Steven (EVP & CFO) | Option Ex | 5,558 | .00 | 0 |
| 2024-02-19 | Chao James (Chairman) | Option Ex | 10,774 | .00 | 0 |
| 2024-02-19 | Chao Albert (President & CEO) | Option Ex | 19,810 | .00 | 0 |
| 2023-11-30 | Chao James (Chairman) | Option Ex | 68,213 | 86.82 | 5,922,457 |
| 2023-11-15 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 4,215 | 130.50 | 550,057 |
| 2023-08-31 | Chao James (Chairman) | Option Ex | 244,591 | 71.94 | 17,594,898 |
| 2023-08-31 | Chao Albert (President & CEO) | Option Ex | 19,988 | 63.98 | 1,278,792 |
| 2023-08-30 | Ederington L. Benjamin (EVP, PEM, GC and CAO) | Option Ex | 13,734 | 61.87 | 849,653 |
| 2023-08-30 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 4,857 | 86.54 | 420,315 |
| 2023-08-30 | Chao James (Chairman) | Option Ex | 30,056 | 56.26 | 1,690,800 |
| 2023-08-30 | Chao Albert (President & CEO) | Option Ex | 20,000 | 63.98 | 1,279,560 |
| 2023-08-29 | Janssens Thomas J. (SVP, Ops - PEM & Corp Logistic) | Option Ex | 3,855 | 107.93 | 416,085 |
| 2023-08-29 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 8,100 | 65.81 | 533,085 |
| 2023-08-23 | Chao David Tsung-hung (Director) | Sale | 1,000 | 131.00 | 131,000 |
| 2023-08-13 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 588 | .00 | 0 |
| 2023-08-12 | Chao David Tsung-hung (Director) | Option Ex | 1,446 | .00 | 0 |
| 2023-08-12 | Haas Marius (Director) | Option Ex | 1,446 | .00 | 0 |
| 2023-08-12 | Graff Michael J (Director) | Option Ex | 1,446 | .00 | 0 |
| 2023-08-12 | Lubel Kimberly S (Director) | Option Ex | 1,446 | .00 | 0 |
| 2023-08-12 | Sheets Jeffrey Wayne (Director) | Option Ex | 1,446 | .00 | 0 |
| 2023-08-12 | Northcutt R Bruce (Director) | Option Ex | 1,446 | .00 | 0 |
| 2023-08-12 | Mccollum Mark A (Director) | Option Ex | 1,446 | .00 | 0 |
| 2023-08-07 | Bender Mark Steven (EVP & CFO) | Option Ex | 24,639 | 97.14 | 2,393,531 |
| 2023-05-19 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 1,963 | 86.54 | 169,874 |
| 2023-05-08 | Bender Mark Steven (EVP & CFO) | Option Ex | 1,084 | 65.81 | 71,341 |
| 2023-02-27 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 1,689 | 72.82 | 122,994 |
| 2023-02-27 | Bender Mark Steven (EVP and CFO) | Option Ex | 3,000 | 65.81 | 197,439 |
| 2023-02-14 | Janssens Thomas J. (SVP, Ops - PEM & Corp Logistic) | Option Ex | 1,538 | .00 | 0 |
| 2023-02-14 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 721 | .00 | 0 |
| 2023-02-14 | Kearns Roger L. (COO and EVP, PEM) | Option Ex | 7,036 | .00 | 0 |
| 2023-02-14 | Ederington L. Benjamin (EVP, GC, CAO and Secretary) | Option Ex | 5,495 | .00 | 0 |
| 2023-02-14 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 5,632 | .00 | 0 |
| 2023-02-14 | Bender Mark Steven (EVP and CFO) | Option Ex | 7,150 | .00 | 0 |
| 2023-02-14 | Chao James (Chairman) | Option Ex | 18,519 | .00 | 0 |
| 2023-02-14 | Chao Albert (President & CEO) | Option Ex | 26,048 | .00 | 0 |
| 2022-08-31 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 1,000 | 98.94 | 98,940 |
| 2022-08-26 | Zoeller Johnathan Stevan (VP & Chief Accounting Officer) | Sale | 542 | 107.08 | 58,037 |
| 2022-08-13 | Chao David Tsung-hung | Option Ex | 1,763 | .00 | 0 |
| 2022-08-13 | Haas Marius | Option Ex | 1,763 | .00 | 0 |
| 2022-08-13 | Graff Michael J | Option Ex | 1,763 | .00 | 0 |
| 2022-08-13 | Lubel Kimberly S | Option Ex | 1,763 | .00 | 0 |
| 2022-08-13 | Sheets Jeffrey Wayne | Option Ex | 1,763 | .00 | 0 |
| 2022-08-13 | Northcutt R Bruce | Option Ex | 1,763 | .00 | 0 |
| 2022-08-13 | Jenkins Dorothy C | Option Ex | 1,763 | .00 | 0 |
| 2022-08-13 | Mccollum Mark A | Option Ex | 1,763 | .00 | 0 |
| 2022-05-27 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 14,427 | 129.47 | 1,867,820 |
| 2022-05-27 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 14,427 | 97.14 | 1,401,496 |
| 2022-05-19 | Chao Albert (President & CEO) | Sale | 37,876 | 130.23 | 4,932,553 |
| 2022-05-19 | Chao Albert (President & CEO) | Option Ex | 37,876 | 45.70 | 1,730,857 |
| 2022-05-17 | Kearns Roger L. (COO and EVP - PEM) | Sale | 8,388 | 136.24 | 1,142,739 |
| 2022-05-17 | Kearns Roger L. (COO and EVP - PEM) | Option Ex | 8,388 | 79.83 | 669,614 |
| 2022-05-05 | Ederington L. Benjamin (EVP, GC, CAO and Secretary) | Sale | 12,569 | 139.63 | 1,755,009 |
| 2022-05-05 | Ederington L. Benjamin (EVP, GC, CAO and Secretary) | Option Ex | 12,569 | 44.42 | 558,314 |
| 2022-03-31 | Bender Mark Steven (EVP and CFO) | Sale | 6,021 | 124.67 | 750,620 |
| 2022-03-31 | Bender Mark Steven (EVP and CFO) | Option Ex | 6,021 | 72.82 | 438,455 |
| 2022-03-30 | Bender Mark Steven (EVP and CFO) | Sale | 6,000 | 124.80 | 748,776 |
| 2022-03-30 | Bender Mark Steven (EVP and CFO) | Option Ex | 6,000 | 72.82 | 436,926 |
| 2022-03-29 | Bender Mark Steven (EVP and CFO) | Sale | 4,000 | 122.44 | 489,748 |
| 2022-03-29 | Bender Mark Steven (EVP and CFO) | Option Ex | 4,000 | 72.82 | 291,284 |
| 2022-03-25 | Kearns Roger L. (COO and EVP - PEM) | Sale | 10,333 | 126.12 | 1,303,218 |
| 2022-03-25 | Kearns Roger L. (COO and EVP - PEM) | Option Ex | 10,333 | 83.18 | 859,540 |
| 2022-03-25 | Bender Mark Steven (EVP and CFO) | Sale | 8,000 | 125.42 | 1,003,392 |
| 2022-03-25 | Bender Mark Steven (EVP and CFO) | Option Ex | 8,000 | 72.82 | 582,568 |
| 2022-03-24 | Bender Mark Steven (EVP and CFO) | Sale | 8,000 | 125.38 | 1,003,072 |
| 2022-03-24 | Bender Mark Steven (EVP and CFO) | Option Ex | 4,000 | 65.81 | 263,252 |
| 2022-03-23 | Bender Mark Steven (EVP and CFO) | Sale | 6,000 | 125.41 | 752,472 |
| 2022-03-23 | Bender Mark Steven (EVP and CFO) | Option Ex | 3,000 | 65.81 | 197,439 |
| 2022-03-10 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 22,555 | 117.61 | 2,652,693 |
| 2022-03-10 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Option Ex | 22,555 | 72.82 | 1,642,477 |
| 2022-03-09 | Buesinger Robert F. (EVP, HIP, IT & Digital) | Sale | 2,730 | 115.55 | 315,451 |
| 2022-03-01 | Zoeller Johnathan Stevan (VP and CAO) | Sale | 1,006 | 110.39 | 111,052 |
| 2022-03-01 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 1,006 | 65.81 | 66,207 |
| 2022-02-15 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 172 | .00 | 0 |
| 2022-02-15 | Kearns Roger L. (EVP and COO) | Option Ex | 3,296 | .00 | 0 |
| 2022-02-15 | Ederington L. Benjamin (SVP, GC, CAO and Secretary) | Option Ex | 3,796 | .00 | 0 |
| 2022-02-15 | Buesinger Robert F. (EVP, Vinyl Products) | Option Ex | 3,869 | .00 | 0 |
| 2022-02-15 | Kenner Andrew (SVP, Operations) | Option Ex | 2,859 | .00 | 0 |
| 2022-02-15 | Bender Mark Steven (EVP and CFO) | Option Ex | 4,755 | .00 | 0 |
| 2022-02-15 | Chao James (Chairman) | Option Ex | 14,683 | .00 | 0 |
| 2022-02-15 | Chao Albert (President & CEO) | Option Ex | 18,354 | .00 | 0 |
| 2021-12-02 | Chao James (Chairman) | Option Ex | 16,420 | 30.05 | 493,470 |
| 2021-12-02 | Chao Albert (President & CEO) | Sale | 30,787 | 90.80 | 2,795,305 |
| 2021-12-02 | Chao Albert (President & CEO) | Option Ex | 30,787 | 30.05 | 925,241 |
| 2021-12-01 | Chao Albert (President & CEO) | Sale | 30,787 | 92.22 | 2,839,238 |
| 2021-12-01 | Chao Albert (President & CEO) | Option Ex | 30,787 | 30.05 | 925,241 |
| 2021-11-11 | Bender Mark Steven (EVP and CFO) | Sale | 2,369 | 101.57 | 240,619 |
| 2021-11-08 | Bender Mark Steven (EVP and CFO) | Sale | 631 | 100.77 | 63,587 |
| 2021-11-05 | Bender Mark Steven (EVP and CFO) | Sale | 6,356 | 98.80 | 627,947 |
| 2021-08-20 | Zoeller Johnathan Stevan (VP and CAO) | Option Ex | 986 | .00 | 0 |
| 2021-08-14 | Chao John Tsung-chen | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Chao David Tsung-hung | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Haas Marius | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Graff Michael J | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Lubel Kimberly S | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Sheets Jeffrey Wayne | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Northcutt R Bruce | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Jenkins Dorothy C | Option Ex | 2,400 | .00 | 0 |
| 2021-08-14 | Mccollum Mark A | Option Ex | 2,400 | .00 | 0 |
| 2021-08-11 | Chao Albert (President & CEO) | Buy | 3,000 | 86.21 | 258,629 |
| 2021-05-15 | Lubel Kimberly S | Option Ex | 3,780 | .00 | 0 |
| 2021-05-10 | Buesinger Robert F. (EVP, Vinyl Products) | Sale | 5,000 | 105.00 | 525,000 |
| 2021-03-24 | Bender Mark Steven (EVP and CFO) | Option Ex | 4,000 | 79.83 | 319,320 |
| 2021-03-23 | Bender Mark Steven (EVP and CFO) | Option Ex | 3,000 | 79.83 | 239,490 |
| 2021-03-12 | Bender Mark Steven (EVP and CFO) | Sale | 15,740 | 94.81 | 1,492,309 |
| 2021-03-12 | Bender Mark Steven (EVP and CFO) | Option Ex | 15,740 | 53.78 | 846,512 |
| 2021-03-09 | Bender Mark Steven (EVP and CFO) | Sale | 25,811 | 92.27 | 2,381,632 |
Insider trading activities including stock purchases, stock sales, and option exercises of WLK listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Westlake Corp (symbol WLK, CIK number 1262823) see the Securities and Exchange Commission (SEC) website.