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| 31 Aug 2023 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 19,988 | $63.98 | $1,278,832 31 Aug 2023 | 540,136 | ↗ |
| 30 Aug 2023 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 20,000 | $63.98 | $1,279,600 30 Aug 2023 | 540,148 | ↗ |
| 14 Feb 2023 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 26,048 | $124.19 | $3,234,901 14 Feb 2023 | 499,031 | ↗ |
| 19 May 2022 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 37,876 | $45.70 | $1,730,933 19 May 2022 | 510,859 | ↗ |
| 15 Feb 2022 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 18,354 | $105.98 | $1,945,157 15 Feb 2022 | 460,293 | ↗ |
| 2 Dec 2021 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 30,787 | $30.05 | $925,149 2 Dec 2021 | 472,726 | ↗ |
| 1 Dec 2021 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 30,787 | $30.05 | $925,149 1 Dec 2021 | 472,726 | ↗ |
| 11 Aug 2021 | WLK Westlake Corporation | Albert Chao President and CEO | Buy | 3,000 | $86.21 | $258,630 11 Aug 2021 | 441,939 | ↗ |
| 16 Feb 2021 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 11,983 | $88.05 | $1,055,103 16 Feb 2021 | 442,624 | ↗ |
| 14 Feb 2021 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 3,966 | $87.08 | $345,359 14 Feb 2021 | 431,622 | ↗ |
| 14 Feb 2021 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 3,966 | $87.08 | $345,359 14 Feb 2021 | 431,622 | ↗ |
| 6 Nov 2020 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 55,148 | $22.92 | $1,263,992 6 Nov 2020 | 482,804 | ↗ |
| 26 Feb 2020 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 57,800 | $10.26 | $593,028 26 Feb 2020 | 427,656 | ↗ |
| 21 Feb 2020 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 68,698 | $10.26 | $704,841 21 Feb 2020 | 421,448 | ↗ |
| 17 Feb 2020 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 19,902 | $64.84 | $1,290,446 17 Feb 2020 | 358,841 | ↗ |
| 16 Nov 2018 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 30,640 | $7.12 | $218,157 16 Nov 2018 | 349,163 | ↗ |
| 14 Nov 2018 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 61,279 | $7.12 | $436,306 14 Nov 2018 | 343,032 | ↗ |
| 12 Nov 2018 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 63,973 | $7.12 | $455,488 12 Nov 2018 | 321,374 | ↗ |
| 28 Nov 2017 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 41,844 | $9.65 | $403,795 28 Nov 2017 | 290,862 | ↗ |
| 27 Nov 2017 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 25,000 | $9.65 | $241,250 27 Nov 2017 | 299,018 | ↗ |
| 22 Nov 2017 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 45,000 | $9.65 | $434,250 22 Nov 2017 | 294,018 | ↗ |
| 21 Nov 2017 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 25,000 | $9.65 | $241,250 21 Nov 2017 | 299,018 | ↗ |
| 23 Feb 2017 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 42,180 | $15.81 | $666,866 23 Feb 2017 | 316,198 | ↗ |
| 16 Nov 2016 | WLK Westlake Corporation | Albert Chao President and CEO | Sale | 20,000 | $54.15 | $1,083,000 16 Nov 2016 | 0 | ↗ |
| 16 Nov 2016 | WLK Westlake Corporation | Albert Chao President and CEO | Sale | 20,000 | $54.15 | $1,083,000 16 Nov 2016 | 0 | ↗ |
| 14 Nov 2016 | WLK Westlake Corporation | Albert Chao President and CEO | Sale | 20,000 | $52.95 | $1,059,000 14 Nov 2016 | 20,000 | ↗ |
| 14 Nov 2016 | WLK Westlake Corporation | Albert Chao President and CEO | Sale | 20,000 | $52.95 | $1,059,000 14 Nov 2016 | 20,000 | ↗ |
| 7 Dec 2012 | WLK Westlake Corporation | Albert Chao President and CEO | Sale | 3,608 | $73.75 | $266,090 7 Dec 2012 | 146,432 | ↗ |
| 6 Dec 2012 | WLK Westlake Corporation | Albert Chao President and CEO | Sale | 34,262 | $72.55 | $2,485,708 6 Dec 2012 | 150,040 | ↗ |
| 26 Nov 2012 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 91,040 | $16.64 | $1,514,906 26 Nov 2012 | 230,915 | ↗ |
| 23 Nov 2012 | WLK Westlake Corporation | Albert Chao President and CEO | Option | 39,000 | $18.76 | $731,640 23 Nov 2012 | 159,875 | ↗ |
| 20 Mar 2006 | WLK Westlake Corporation | Albert Chao President and CEO | Buy | 20,000 | $14.50 | $290,000 20 Mar 2006 | 20,000 | ↗ |
| 9 Sep 2005 | WLK Westlake Corporation | Albert Chao President and CEO | Buy | 20,000 | $14.50 | $290,000 9 Sep 2005 | 20,000 | ↗ |
| 16 Aug 2004 | WLK Westlake Corporation | Albert Chao President and CEO | Buy | 40,600 | $14.50 | $588,700 16 Aug 2004 | 20,000 | ↗ |
| 24 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 4,779 | $13.70 | $65,472 24 Mar 2020 | 166,435 | ↗ |
| 23 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 4,780 | $13.12 | $62,714 23 Mar 2020 | 161,656 | ↗ |
| 20 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 13,681 | $13.90 | $190,166 20 Mar 2020 | 156,876 | ↗ |
| 19 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 9,135 | $13.80 | $126,063 19 Mar 2020 | 143,195 | ↗ |
| 18 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 15,974 | $11.68 | $186,576 18 Mar 2020 | 134,060 | ↗ |
| 17 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 10,536 | $13.82 | $145,608 17 Mar 2020 | 118,086 | ↗ |
| 16 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 7,535 | $14.15 | $106,620 16 Mar 2020 | 107,550 | ↗ |
| 13 Mar 2020 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 3,580 | $15.18 | $54,344 13 Mar 2020 | 100,015 | ↗ |
| 19 Nov 2018 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 10,386 | $23.24 | $241,371 19 Nov 2018 | 96,435 | ↗ |
| 15 Nov 2018 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 14,944 | $23.26 | $347,597 15 Nov 2018 | 86,049 | ↗ |
| 13 Nov 2018 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 17,605 | $23.32 | $410,549 13 Nov 2018 | 71,105 | ↗ |
| 6 Mar 2018 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 2,000 | $23.16 | $46,320 6 Mar 2018 | 53,500 | ↗ |
| 2 Mar 2018 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 4,000 | $22.89 | $91,560 2 Mar 2018 | 51,500 | ↗ |
| 1 Mar 2018 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 2,500 | $22.98 | $57,450 1 Mar 2018 | 47,500 | ↗ |
| 28 Nov 2017 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 14,900 | $21.98 | $327,502 28 Nov 2017 | 27,275 | ↗ |
| 24 Nov 2017 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 10,375 | $22.12 | $229,495 24 Nov 2017 | 12,375 | ↗ |
| 22 Nov 2017 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 2,000 | $21.49 | $42,980 22 Nov 2017 | 47,000 | ↗ |
| 4 Aug 2014 | WLKP Westlake Chemical Partners LP | Albert Chao President and CEO | Buy | 1,526,115 | $1.42 | $2,167,083 4 Aug 2014 | 45,000 | ↗ |
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