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Robert Robotti
> WLK
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | WESTLAKE CORP | WLK | 228,359 | -857 | 27,282,050,000 | 697,578,000 | $119,470.00 |
| 03/31/2023 | WESTLAKE CORP | WLK | 229,216 | -51 | 26,584,472,000 | 3,075,434,000 | $115,980.00 |
| 12/31/2022 | WESTLAKE CORP | WLK | 229,267 | -699 | 23,509,038,000 | 23,489,059,000 | $102,540.00 |
| 09/30/2022 | WESTLAKE CORP | WLK | 229,966 | -415 | 19,979,000 | -2,603,000 | $86.88 |
| 06/30/2022 | WESTLAKE CORP | WLK | 230,381 | 567 | 22,582,000 | -5,777,000 | $98.02 |
| 03/31/2022 | WESTLAKE CORP | WLK | 229,814 | 97,865 | 28,359,000 | 15,542,000 | $123.40 |
| 12/31/2021 | WESTLAKE CORP | WLK | 131,949 | -99,021 | 12,817,000 | -8,234,000 | $97.14 |
| 09/30/2021 | WESTLAKE CORP | WLK | 230,970 | 590 | 21,051,000 | 296,000 | $91.14 |
| 06/30/2021 | WESTLAKE CORP | WLK | 230,380 | -28,944 | 20,755,000 | -2,270,000 | $90.09 |
| 03/31/2021 | WESTLAKE CORP | WLK | 259,324 | -3,052 | 23,025,000 | 1,615,000 | $88.79 |
| 12/31/2020 | WESTLAKE CORP | WLK | 262,376 | -5,000 | 21,410,000 | 4,506,000 | $81.60 |
| 09/30/2020 | WESTLAKE CORP | WLK | 267,376 | -8,702 | 16,904,000 | 2,092,000 | $63.22 |
| 06/30/2020 | WESTLAKE CORP | WLK | 276,078 | -26,758 | 14,812,000 | 3,252,000 | $53.65 |
| 03/31/2020 | WESTLAKE CORP | WLK | 302,836 | 14,739 | 11,560,000 | -8,650,000 | $38.17 |
| 12/31/2019 | WESTLAKE CORP | WLK | 288,097 | -811 | 20,210,000 | 1,281,000 | $70.15 |
| 09/30/2019 | WESTLAKE CORP | WLK | 288,908 | -1,279 | 18,929,000 | -1,227,000 | $65.52 |
| 06/30/2019 | WESTLAKE CORP | WLK | 290,187 | -5,420 | 20,156,000 | 97,000 | $69.46 |
| 03/31/2019 | WESTLAKE CORP | WLK | 295,607 | -2,227 | 20,059,000 | 351,000 | $67.86 |
| 12/31/2018 | WESTLAKE CORP | WLK | 297,834 | 35,864 | 19,708,000 | -2,064,000 | $66.17 |
| 09/30/2018 | WESTLAKE CORP | WLK | 261,970 | 1,348 | 21,772,000 | -6,279,000 | $83.11 |
| 06/30/2018 | WESTLAKE CORP | WLK | 260,622 | -4,530 | 28,051,000 | -1,420,000 | $107.63 |
| 03/31/2018 | WESTLAKE CORP | WLK | 265,152 | -2,083 | 29,471,000 | 1,003,000 | $111.15 |
| 12/31/2017 | WESTLAKE CORP | WLK | 267,235 | -1,668 | 28,468,000 | 6,125,000 | $106.53 |
| 09/30/2017 | WESTLAKE CORP | WLK | 268,903 | -2,262 | 22,343,000 | 4,518,000 | $83.09 |
| 06/30/2017 | WESTLAKE CORP | WLK | 271,165 | 0 | 17,825,000 | 2,643,000 | $65.73 |
| 12/31/2016 | WESTLAKE CORP | WLK | 271,165 | 320 | 15,182,000 | 692,000 | $55.99 |
| 09/30/2016 | WESTLAKE CORP | WLK | 270,845 | -1,035 | 14,490,000 | 2,820,000 | $53.50 |
| 06/30/2016 | WESTLAKE CORP | WLK | 271,880 | 196,175 | 11,670,000 | 8,165,000 | $42.92 |
| 03/31/2016 | WESTLAKE CORP | WLK | 75,705 | 75,705 | 3,505,000 | 3,505,000 | $46.30 |
| 12/31/2015 | WESTLAKE CORP | WLK | 73,685 | 73,685 | 4,003,000 | 4,003,000 | $54.33 |
| 09/30/2014 | WESTLAKE CORP | WLK | 0 | -20,000 | 0 | -1,675,000 | |
| 06/30/2014 | WESTLAKE CORP | WLK | 20,000 | 20,000 | 1,675,000 | 1,675,000 | $83.75 |
| 03/31/2014 | WESTLAKE CORP | WLK | 20,000 | 20,000 | 1,324,000 | 1,324,000 | $66.20 |
| 12/31/2013 | WESTLAKE CORP | WLK | 10,000 | 10,000 | 1,221,000 | 1,221,000 | $122.10 |
| 09/30/2013 | WESTLAKE CORP | WLK | 10,000 | 10,000 | 1,047,000 | 1,047,000 | $104.70 |
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