西湖公司
US ˙ NYSE ˙ US9604131022

介绍

本页面提供了有关 Mark Steven Bender 已知的内部交易历史的全面分析。内部人士包括公司的高管、董事或重要投资者。一般而言，基于内幕、非公开信息进行交易是非法的。这并不意味着他们在自己的公司进行任何交易都是非法的。但是，他们必须通过Form 4向美国证券交易委员会（SEC）报告所有交易。尽管存在这些限制，学术研究表明，整体而言，内部人士在自己公司中的投资表现往往优于市场。

平均交易盈利能力

“平均交易盈利能力”衡量了内部人士在过去三年中所有非计划性的公开市场买入交易的平均回报率。计算过程包括检查每笔交易，排除了作为10b5-1交易计划的一部分的交易。然后，对每笔交易在3、6和12个月的表现进行平均，以生成该笔交易最终的表现指标。然后，将所有交易的表现指标进行平均，计算出内部人士的总体平均表现指标。列表仅包含在过去两年中进行过至少三笔交易的内部人士。

如果内部人士的交易盈利能力显示为"N/A"，则可能是因为该内部人士在过去三年内没有进行任何公开市场买入交易，或者他们进行的交易距离现在时间太近，无法计算出可靠的表现指标。

更新频率：每日

查看收益最高的的内幕交易者列表。

查看排名最高的内部人士。
报告内部持仓的公司

美国证券交易委员会（SEC）文件显示Mark Steven Bender已报告在以下公司拥有持仓或进行了交易：

证券 职位 最新报告的持仓
US:WLK / Westlake Corporation EVP & CFO 56,968
US:WLKP / Westlake Chemical Partners LP - Limited Partnership SVP, CFO, Director 14,000
如何解读这些图表

以下图表显示了在Mark Steven Bender进行的每笔公开市场非计划交易后证券的股价表现。非计划交易是指没有作为10b5-1交易计划的一部分而进行的交易。股价表现以累积百分比变化的方式绘制。例如，如果一笔内部人士交易是在2019年1月1日进行的，该图表将显示该证券的每日百分比变化直至当前日期。如果在此期间股价从10美元涨至15美元，则股价的累积百分比变化将为50%。从10美元涨至20美元的价格变化将为100%，而从10美元跌至5美元的价格变化将为-50%。

最终，我们将评估内部人士的交易与股价的超额回报（正向或负向）之间的相关性，以判断内部人士是否在交易中利用内部信息获利。如果内部人士有这样的行为，我们预期看到（a）买入后的正回报，或者（b）卖出后的负回报。对于情况（a），买入图表将显示一系列向上倾斜的曲线，表示每次买入后都有正回报。对于情况（b），卖出图表将显示一系列向下倾斜的曲线，表示每次卖出后都有负回报。

然而，仅凭这一点还不足以得出结论。例如，如果公司的股价在多年内呈现非周期性上升，我们会预期所有买入后的图表都呈现向上倾斜。同样地，多年来呈现非周期性下降的股价会导致卖出后的图表也呈现向下倾斜。这两种情况的图表都不能表示内部人士在进行内幕交易。

最有力的指标是在公司股价呈极度循环波动的情况下，“买入”图表显示正向信号，而“卖出”图表显示负向趋势。这种情况强烈暗示内部人士可能根据内幕信息精确地计时进行交易，以获得财务优势。

WLK / Westlake Corporation内部人士买入 - 短期收益分析

在这一部分，我们分析了在 WLK / Westlake Corporation 中进行的每笔非计划的公开市场内部人士买入的盈利情况。这种分析有助于了解内部人士是否持续产生异常的回报，以及是否值得跟踪。该分析基于每笔交易后一年的情况，结果仅为理论值。

以下表格显示了最近的自动交易计划之外的公开市场买入。

交易日期 股票代码 内部人士 报告
股数		 报告
价格		 经调整
股数		 经调整
价格		 成本基础 达到最高利润的
天数		 达到最高利润时的
价格		 最高
利润($)		 最高回报率（%）
当前未知该内部人士进行过任何未预先计划的公开市场交易。

经调整价格 已按拆股调整。经调整股数 已按拆股调整。

WLK / Westlake Corporation Insider Trades
WLK / Westlake Corporation内部人士卖出 - 短期亏损分析

在这一部分，我们分析了在 WLK / Westlake Corporation 中进行的每笔非计划的公开市场内部人士卖出所达成的短期亏损规避。如果存在持续的亏损规避模式，可能表明未来的内部人士卖出交易预示着价格的下跌。该分析基于每笔交易后一年的情况，

以下表格显示了最近的自动交易计划之外的公开市场买入。

交易日期 股票代码 内部人士 报告
股数		 报告
价格		 经调整
股数		 经调整
价格		 成本基础 达到最低利润的
天数		 达到最低利润时的
价格		 避免的
最高损失金额($)		 避免的
最高损失率($)
2024-05-03 WLK Bender Mark Steven 4,950 152.1900 4,950 152.1900 753,340 364 79.8500 -358,082 -47.53
2024-03-06 WLK Bender Mark Steven 4,804 141.0190 4,804 141.0190 677,455
2024-02-26 WLK Bender Mark Steven 4,854 137.5700 4,854 137.5700 667,765
2022-03-31 WLK Bender Mark Steven 5,921 124.3430 5,921 124.3430 736,235
2022-03-31 WLK Bender Mark Steven 100 124.9900 100 124.9900 12,499
2022-03-30 WLK Bender Mark Steven 2,938 124.4950 2,938 124.4950 365,766
2022-03-30 WLK Bender Mark Steven 3,062 125.0960 3,062 125.0960 383,044
2022-03-29 WLK Bender Mark Steven 4,000 122.4370 4,000 122.4370 489,748
2022-03-25 WLK Bender Mark Steven 5,053 125.1070 5,053 125.1070 632,166
2022-03-25 WLK Bender Mark Steven 2,947 125.7410 2,947 125.7410 370,559
2022-03-24 WLK Bender Mark Steven 8,000 125.3837 8,000 125.3837 1,003,070
2022-03-23 WLK Bender Mark Steven 5,656 125.1370 5,656 125.1370 707,775
2022-03-23 WLK Bender Mark Steven 344 125.6860 344 125.6860 43,236
2021-11-11 WLK Bender Mark Steven 2,369 101.5700 2,369 101.5700 240,619
2021-11-08 WLK Bender Mark Steven 631 100.7720 631 100.7720 63,587
2021-11-05 WLK Bender Mark Steven 6,356 98.7960 6,356 98.7960 627,947
2021-03-12 WLK Bender Mark Steven 9,920 94.3900 9,920 94.3900 936,349
2021-03-12 WLK Bender Mark Steven 5,820 95.2300 5,820 95.2300 554,239
2021-03-09 WLK Bender Mark Steven 25,811 92.2719 25,811 92.2719 2,381,630
2020-11-06 WLK Bender Mark Steven 1,600 74.7944 1,600 74.7944 119,671
2020-11-05 WLK Bender Mark Steven 24,576 73.9800 24,576 73.9800 1,818,132
2020-11-05 WLK Bender Mark Steven 420 74.5400 420 74.5400 31,307
2018-05-21 WLK Bender Mark Steven 2,300 121.9000 2,300 121.9000 280,370
2018-05-21 WLK Bender Mark Steven 9,505 123.0400 9,505 123.0400 1,169,495
2018-05-21 WLK Bender Mark Steven 261 123.5900 261 123.5900 32,257
2018-05-11 WLK Bender Mark Steven 23,506 117.3300 23,506 117.3300 2,757,959
2018-02-26 WLK Bender Mark Steven 1,500 110.8400 1,500 110.8400 166,260
2018-02-26 WLK Bender Mark Steven 3,500 112.0600 3,500 112.0600 392,210
2018-02-22 WLK Bender Mark Steven 4,000 110.9700 4,000 110.9700 443,880
2018-02-22 WLK Bender Mark Steven 2,000 110.6350 2,000 110.6350 221,270
2017-12-04 WLK Bender Mark Steven 6,500 97.8310 6,500 97.8310 635,902
2017-11-21 WLK Bender Mark Steven 20,382 94.2650 20,382 94.2650 1,921,309
2017-11-13 WLK Bender Mark Steven 29,204 94.0050 29,204 94.0050 2,745,322
2017-11-13 WLK Bender Mark Steven 600 94.6000 600 94.6000 56,760
2017-08-15 WLK Bender Mark Steven 13,794 70.2204 13,794 70.2204 968,620
2017-03-10 WLK Bender Mark Steven 12,000 64.3154 12,000 64.3154 771,785
2014-03-03 WLK Bender Mark Steven 17,721 133.6000 17,721 133.6000 2,367,526
2013-08-12 WLK Bender Mark Steven 2,930 101.0000 2,930 101.0000 295,930
2013-08-08 WLK Bender Mark Steven 3,000 101.0001 3,000 101.0001 303,000
2013-03-25 WLK Bender Mark Steven 4,429 95.0000 4,429 95.0000 420,755
2012-12-03 WLK Bender Mark Steven 3,042 73.0000 3,042 73.0000 222,066
2012-12-03 WLK Bender Mark Steven 316 73.5000 316 73.5000 23,226
2012-12-03 WLK Bender Mark Steven 1,967 73.5000 1,967 73.5000 144,574
2012-12-03 WLK Bender Mark Steven 758 73.5000 758 73.5000 55,713
2012-11-26 WLK Bender Mark Steven 3,382 74.8400 3,382 74.8400 253,109
2012-11-26 WLK Bender Mark Steven 200 74.8600 200 74.8600 14,972
2012-11-26 WLK Bender Mark Steven 100 74.8800 100 74.8800 7,488
2012-11-26 WLK Bender Mark Steven 100 74.8900 100 74.8900 7,489
2012-11-26 WLK Bender Mark Steven 325 74.9200 325 74.9200 24,349
2012-11-26 WLK Bender Mark Steven 200 74.9300 200 74.9300 14,986
2012-11-26 WLK Bender Mark Steven 100 74.9400 100 74.9400 7,494
2012-11-26 WLK Bender Mark Steven 4,407 75.0000 4,407 75.0000 330,525
2012-11-23 WLK Bender Mark Steven 1,220 75.9500 1,220 75.9500 92,659
2011-02-25 WLK Bender Mark Steven 2,000 46.6800 2,000 46.6800 93,360
2011-02-25 WLK Bender Mark Steven 2,000 46.6700 2,000 46.6700 93,340
2011-02-25 WLK Bender Mark Steven 160 46.5800 160 46.5800 7,453
2011-02-25 WLK Bender Mark Steven 2,800 46.5300 2,800 46.5300 130,284
2011-02-25 WLK Bender Mark Steven 3,000 46.5200 3,000 46.5200 139,560
2011-02-25 WLK Bender Mark Steven 429 46.5000 429 46.5000 19,948
2011-02-25 WLK Bender Mark Steven 1,100 46.4900 1,100 46.4900 51,139
2011-02-25 WLK Bender Mark Steven 200 46.4800 200 46.4800 9,296
2011-02-25 WLK Bender Mark Steven 200 46.4700 200 46.4700 9,294
2011-02-25 WLK Bender Mark Steven 451 46.4600 451 46.4600 20,953
2011-02-25 WLK Bender Mark Steven 2,317 46.4500 2,317 46.4500 107,625
2011-02-25 WLK Bender Mark Steven 1,099 46.4400 1,099 46.4400 51,038
2011-02-25 WLK Bender Mark Steven 600 46.4300 600 46.4300 27,858
2011-02-25 WLK Bender Mark Steven 5,145 46.4100 5,145 46.4100 238,779
2011-02-25 WLK Bender Mark Steven 300 46.4000 300 46.4000 13,920
2011-02-25 WLK Bender Mark Steven 2,949 46.3900 2,949 46.3900 136,804
2011-02-25 WLK Bender Mark Steven 200 46.3800 200 46.3800 9,276
2011-02-25 WLK Bender Mark Steven 100 46.3700 100 46.3700 4,637
2011-02-25 WLK Bender Mark Steven 883 46.3500 883 46.3500 40,927
2011-02-25 WLK Bender Mark Steven 500 46.3400 500 46.3400 23,170
2011-02-25 WLK Bender Mark Steven 1,400 46.3100 1,400 46.3100 64,834

经调整价格 已按拆股调整。经调整股数 已按拆股调整。

WLK / Westlake Corporation Insider Trades
WLKP / Westlake Chemical Partners LP - Limited Partnership内部人士买入 - 短期收益分析

在这一部分，我们分析了在 WLK / Westlake Corporation 中进行的每笔非计划的公开市场内部人士买入的盈利情况。这种分析有助于了解内部人士是否持续产生异常的回报，以及是否值得跟踪。该分析基于每笔交易后一年的情况，结果仅为理论值。

以下表格显示了最近的自动交易计划之外的公开市场买入。

交易日期 股票代码 内部人士 报告
股数		 报告
价格		 经调整
股数		 经调整
价格		 成本基础 达到最高利润的
天数		 达到最高利润时的
价格		 最高
利润($)		 最高回报率（%）
2020-03-13 WLKP Bender Mark Steven 1,000 14.9140 1,000 14.9140 14,914 362 24.9800 10,066 67.49
2020-03-12 WLKP Bender Mark Steven 1,000 15.0730 1,000 15.0730 15,073
2018-02-27 WLKP Bender Mark Steven 2,000 23.7675 2,000 23.7675 47,535
2014-08-04 WLKP Bender Mark Steven 10,000 24.0000 10,000 24.0000 240,000

经调整价格 已按拆股调整。经调整股数 已按拆股调整。

WLKP / Westlake Chemical Partners LP - Limited Partnership Insider Trades
WLKP / Westlake Chemical Partners LP - Limited Partnership内部人士卖出 - 短期亏损分析

在这一部分，我们分析了在 WLK / Westlake Corporation 中进行的每笔非计划的公开市场内部人士卖出所达成的短期亏损规避。如果存在持续的亏损规避模式，可能表明未来的内部人士卖出交易预示着价格的下跌。该分析基于每笔交易后一年的情况，

以下表格显示了最近的自动交易计划之外的公开市场买入。

交易日期 股票代码 内部人士 报告
股数		 报告
价格		 经调整
股数		 经调整
价格		 成本基础 达到最低利润的
天数		 达到最低利润时的
价格		 避免的
最高损失金额($)		 避免的
最高损失率($)
当前未知该内部人士进行过任何未预先计划的公开市场交易。

经调整价格 已按拆股调整。经调整股数 已按拆股调整。

WLKP / Westlake Chemical Partners LP - Limited Partnership Insider Trades
内幕交易历史

该表格显示了由 Mark Steven Bender 进行的所有内幕交易的完整列表，这些交易已向美国证券交易委员会（SEC）披露。

备案日期 交易日期 表格 股票代码 证券 代码 10b5-1 股数 剩余股数 %
变化		 每股
股价		 交易
金额		 剩余
金额
2025-02-24 2025-02-21 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -3,530 56,968 -5.83 110.54 -390,206 6,297,243
2025-02-24 2025-02-20 4 WLK WESTLAKE CORP
Common Stock 		A - Award 8,819 60,498 17.06
2025-02-20 2025-02-19 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -132 51,679 -0.25 112.76 -14,884 5,827,324
2025-02-20 2025-02-19 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -50 51,811 -0.10 112.46 -5,623 5,826,665
2025-02-20 2025-02-19 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -4,264 51,861 -7.60 111.46 -475,265 5,780,427
2025-02-20 2025-02-18 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 13,987 56,125 33.19
2024-08-15 2024-08-14 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -1,156 42,138 -2.67 145.44 -168,129 6,128,551
2024-08-15 2024-08-13 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 2,938 43,294 7.28
2024-05-06 2024-05-03 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -4,950 40,356 -10.93 152.19 -753,340 6,141,780
2024-03-07 2024-03-06 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -4,804 45,306 -9.59 141.02 -677,455 6,389,007
2024-02-28 2024-02-26 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -4,854 50,110 -8.83 137.57 -667,765 6,893,633
2024-02-21 2024-02-20 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -547 54,964 -0.99 138.68 -75,855 7,622,133
2024-02-21 2024-02-20 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -5,597 55,511 -9.16 129.92 -727,162 7,211,989
2024-02-21 2024-02-19 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 5,558 61,108 10.01
2024-02-21 2024-02-16 4 WLK WESTLAKE CORP
Common Stock 		A - Award 11,150 55,550 25.11
2023-08-09 2023-08-07 4 WLK WESTLAKE CORP
Common Stock 		D - Sale to Issuer -2,625 44,400 -5.58 133.99 -351,724 5,949,156
2023-08-09 2023-08-07 4 WLK WESTLAKE CORP
Common Stock 		D - Sale to Issuer -19,598 47,025 -29.42 133.48 -2,615,941 6,276,897
2023-08-09 2023-08-07 4 WLK WESTLAKE CORP
Common Stock 		D - Sale to Issuer -2,416 66,623 -3.50 132.43 -319,951 8,822,884
2023-08-09 2023-08-07 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 12,606 69,039 22.34 86.54 1,090,897 5,974,490
2023-08-09 2023-08-07 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 12,033 56,433 27.10 107.75 1,296,556 6,080,656
2023-05-10 2023-05-08 4 WLK WESTLAKE CORP
Common Stock 		D - Sale to Issuer -1,084 44,400 -2.38 120.03 -130,109 5,329,199
2023-05-10 2023-05-08 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 1,084 45,484 2.44 65.81 71,341 2,993,416
2023-03-15 2023-03-13 4/A WLK WESTLAKE CORP
Common Stock 		F - Taxes -304 44,400 -0.68 104.76 -31,847 4,651,344
2023-03-15 2023-03-13 4/A WLK WESTLAKE CORP
Common Stock 		F - Taxes -5,728 44,704 -11.36 104.32 -597,545 4,663,521
2023-03-15 2023-02-17 4/A WLK WESTLAKE CORP
Common Stock 		A - Award 14,342 50,432 39.74
2023-02-28 2023-02-27 4 WLK WESTLAKE CORP
Common Stock 		D - Sale to Issuer -3,000 50,432 -5.61 120.50 -361,500 6,077,056
2023-02-28 2023-02-27 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 3,000 53,432 5.95 65.81 197,438 3,516,494
2023-02-17 2023-02-17 4 WLK WESTLAKE CORP
Common Stock 		A - Award 14,342 50,432 39.74
2023-02-16 2023-02-15 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -25 36,090 -0.07 122.56 -3,064 4,423,190
2023-02-16 2023-02-15 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -1,760 36,115 -4.65 121.86 -214,474 4,400,974
2023-02-16 2023-02-14 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 7,150 37,875 23.27
2022-04-01 2022-03-31 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -3,960 0 -100.00
2022-04-01 2022-03-31 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -2,061 0 -100.00
2022-04-01 2022-03-31 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -100 30,725 -0.32 124.99 -12,499 3,840,318
2022-04-01 2022-03-31 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -5,921 30,825 -16.11 124.34 -736,235 3,832,873
2022-04-01 2022-03-31 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 3,960 36,746 12.08 65.81 260,618 2,418,346
2022-04-01 2022-03-31 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 2,061 32,786 6.71 79.83 164,530 2,617,306
2022-03-31 2022-03-30 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -3,000 3,960 -43.10
2022-03-31 2022-03-30 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -3,000 3,960 -43.10
2022-03-31 2022-03-30 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -3,062 30,725 -9.06 125.10 -383,044 3,843,575
2022-03-31 2022-03-30 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -2,938 33,787 -8.00 124.50 -365,766 4,206,313
2022-03-31 2022-03-30 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 3,000 36,725 8.90 65.81 197,438 2,416,964
2022-03-31 2022-03-30 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 3,000 33,725 9.76 79.83 239,490 2,692,267
2022-03-30 2022-03-29 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -2,000 6,960 -22.32
2022-03-30 2022-03-29 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -2,000 6,960 -22.32
2022-03-30 2022-03-29 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -4,000 30,725 -11.52 122.44 -489,748 3,761,877
2022-03-30 2022-03-29 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 2,000 34,725 6.11 65.81 131,625 2,285,339
2022-03-30 2022-03-29 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 2,000 32,725 6.51 79.83 159,660 2,612,437
2022-03-28 2022-03-25 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -4,000 8,960 -30.86
2022-03-28 2022-03-25 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -4,000 8,960 -30.86
2022-03-28 2022-03-25 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -2,947 30,725 -8.75 125.74 -370,559 3,863,392
2022-03-28 2022-03-25 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -5,053 33,672 -13.05 125.11 -632,166 4,212,603
2022-03-28 2022-03-25 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 4,000 38,725 11.52 65.81 263,250 2,548,589
2022-03-28 2022-03-25 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 4,000 34,725 13.02 79.83 319,320 2,772,097
2022-03-25 2022-03-24 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -4,000 12,960 -23.58
2022-03-25 2022-03-24 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -4,000 12,960 -23.58
2022-03-25 2022-03-24 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -8,000 30,725 -20.66 125.38 -1,003,070 3,852,414
2022-03-25 2022-03-24 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 4,000 38,725 11.52 65.81 263,250 2,548,589
2022-03-25 2021-03-24 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 4,000 34,725 13.02 79.83 319,320 2,772,097
2022-03-24 2022-03-23 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -3,000 16,960 -15.03
2022-03-24 2022-03-23 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		M - Exercise -3,000 16,960 -15.03
2022-03-24 2022-03-23 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -344 30,725 -1.11 125.69 -43,236 3,861,702
2022-03-24 2022-03-23 4 WLK WESTLAKE CORP
Common Stock 		S - Sale -5,656 31,069 -15.40 125.14 -707,775 3,887,881
2022-03-24 2022-03-23 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 3,000 36,725 8.90 65.81 197,438 2,416,964
2022-03-24 2021-03-23 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 3,000 33,725 9.76 79.83 239,490 2,692,267
2022-03-15 2022-03-14 4/A WLK WESTLAKE CORP
Common Stock 		F - Taxes -2,810 30,725 -8.38 118.51 -333,013 3,641,220
2022-03-15 2022-02-18 4/A WLK WESTLAKE CORP
Common Stock 		A - Award 7,922 33,535 30.93
2022-02-22 2022-02-18 4 WLK WESTLAKE CORP
Restricted Stock Units 		A - Award 13,987 13,987
2022-02-22 2022-02-18 4 WLK WESTLAKE CORP
Employee Option (right to buy) 		A - Award 14,980 14,980
2022-02-22 2022-02-18 4 WLK WESTLAKE CORP
Common Stock 		A - Award 7,923 33,536 30.93
2022-02-17 2022-02-16 4 WLK WESTLAKE CORP
Common Stock 		F - Taxes -1,166 25,613 -4.35 104.96 -122,383 2,688,340
2022-02-17 2022-02-15 4 WLK WESTLAKE CORP
Restricted Stock Units 		M - Exercise -4,755 0 -100.00
2022-02-17 2022-02-15 4 WLK WESTLAKE CORP
Common Stock 		M - Exercise 4,755 26,779 21.59
2021-11-15 2021-11-11 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,369 22,024 -9.71 101.57 -240,619 2,236,978
2021-11-10 2021-11-08 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -631 24,393 -2.52 100.77 -63,587 2,458,131
2021-11-08 2021-11-05 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -6,356 25,024 -20.25 98.80 -627,947 2,472,271
2021-08-16 2021-08-13 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 2,938 2,938
2021-03-15 2021-03-12 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -5,000 0 -100.00
2021-03-15 2021-03-12 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -10,740 0 -100.00
2021-03-15 2021-03-12 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -5,820 31,380 -15.65 95.23 -554,239 2,988,317
2021-03-15 2021-03-12 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -9,920 37,200 -21.05 94.39 -936,349 3,511,308
2021-03-15 2021-03-12 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 5,000 47,120 11.87 61.86 309,325 2,915,079
2021-03-15 2021-03-12 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 10,740 42,120 34.23 45.70 490,791 1,924,779
2021-03-10 2021-03-09 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -15,995 5,000 -76.18
2021-03-10 2021-03-09 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -9,816 0 -100.00
2021-03-10 2021-03-09 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -25,811 31,380 -45.13 92.27 -2,381,630 2,895,492
2021-03-10 2021-03-09 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 15,995 57,191 38.83 61.86 989,531 3,538,121
2021-03-10 2021-03-09 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 9,816 41,196 31.28 63.98 628,003 2,635,617
2021-02-22 2021-02-19 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 5,558 5,558
2021-02-22 2021-02-19 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 19,100 19,100
2021-02-18 2021-02-18 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -808 31,380 -2.51 85.08 -68,746 2,669,873
2021-02-18 2021-02-16 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -3,230 0 -100.00
2021-02-18 2021-02-16 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 3,230 32,188 11.15
2021-02-17 2021-02-16 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -4 28,958 -0.01 87.38 -350 2,530,350
2021-02-17 2021-02-16 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes 398 28,962 1.39 85.73 34,121 2,482,912
2021-02-17 2021-02-14 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -1,478 0 -100.00
2021-02-17 2021-02-14 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 1,478 29,360 5.30
2021-02-17 2021-02-16 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -4 28,958 -0.01 87.38 -350 2,530,350
2021-02-17 2021-02-16 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes 398 28,962 1.39 85.73 34,121 2,482,912
2021-02-17 2021-02-14 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -1,478 0 -100.00
2021-02-17 2021-02-14 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 1,478 29,360 5.30
2020-11-10 2020-11-06 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -1,600 27,882 -5.43 74.79 -119,671 2,085,417
2020-11-06 2020-11-05 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -24,996 0 -100.00
2020-11-06 2020-11-05 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -420 29,482 -1.40 74.54 -31,307 2,197,588
2020-11-06 2020-11-05 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -24,576 29,902 -45.11 73.98 -1,818,132 2,212,150
2020-11-06 2020-11-05 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 24,996 54,478 84.78 44.42 1,110,322 2,419,913
2020-03-16 2020-03-13 4 WLKP Westlake Chemical Partners LP
Common Units (Limited Partner Interests) 		P - Purchase 1,000 14,000 7.69 14.91 14,914 208,796
2020-03-16 2020-03-12 4 WLKP Westlake Chemical Partners LP
Common Units (Limited Partner Interests) 		P - Purchase 1,000 13,000 8.33 15.07 15,073 195,949
2020-02-19 2020-02-18 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -1,457 29,482 -4.71 60.52 -88,176 1,784,221
2020-02-19 2020-02-17 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -5,375 0 -100.00
2020-02-19 2020-02-17 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 5,375 30,939 21.03
2020-02-18 2020-02-14 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 1,478 1,478
2020-02-18 2020-02-14 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 7,150 7,150
2020-02-18 2020-02-14 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 30,243 30,243
2019-12-03 2019-12-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -3,374 25,564 -11.66 67.01 -226,081 1,712,962
2019-12-03 2019-12-01 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -8,324 0 -100.00
2019-12-03 2019-12-01 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 8,324 28,938 40.38
2019-02-20 2019-02-19 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -152 20,614 -0.73 75.83 -11,526 1,563,160
2019-02-20 2019-02-19 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -1,610 20,766 -7.20 73.29 -117,997 1,521,940
2019-02-20 2019-02-18 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -6,566 0 -100.00
2019-02-20 2019-02-18 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 6,566 22,376 41.53
2019-02-19 2019-05-15 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 4,755 4,755
2019-02-19 2019-02-15 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 18,061 18,061
2018-05-22 2018-05-21 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -12,066 0 -100.00
2018-05-22 2018-05-21 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -261 15,810 -1.62 123.59 -32,257 1,953,958
2018-05-22 2018-05-21 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -9,505 16,071 -37.16 123.04 -1,169,495 1,977,376
2018-05-22 2018-05-21 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,300 25,576 -8.25 121.90 -280,370 3,117,714
2018-05-22 2018-05-21 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 12,066 27,876 76.32 68.09 821,574 1,898,077
2018-05-14 2018-05-11 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -6,680 0 -100.00
2018-05-14 2018-05-11 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -16,826 0 -100.00
2018-05-14 2018-05-11 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -23,506 15,810 -59.79 117.33 -2,757,959 1,854,987
2018-05-14 2018-05-11 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 6,680 39,316 20.47 22.92 153,072 900,926
2018-05-14 2018-05-11 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 16,826 32,636 106.43 30.05 505,663 980,793
2018-02-27 2018-02-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -3,500 15,810 -18.13 112.06 -392,210 1,771,669
2018-02-27 2018-02-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -1,500 19,310 -7.21 110.84 -166,260 2,140,320
2018-02-27 2018-02-27 4 WLKP Westlake Chemical Partners LP
Common Units (Limited Partner Interests) 		P - Purchase 2,000 12,000 20.00 23.77 47,535 285,210
2018-02-26 2018-02-22 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,000 20,810 -8.77 110.64 -221,270 2,302,314
2018-02-23 2018-02-22 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -4,000 22,810 -14.92 110.97 -443,880 2,531,226
2018-02-22 2018-02-21 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -876 26,810 -3.16 106.98 -93,714 2,868,134
2018-02-22 2018-02-20 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -3,619 0 -100.00
2018-02-22 2018-02-20 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 3,619 27,686 15.04
2018-02-20 2018-02-16 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 3,230 3,230
2018-02-20 2018-02-16 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 12,033 12,033
2017-12-19 2017-11-26 4/A WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise 4,407 0 -100.00
2017-12-19 2012-11-26 4/A WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -4,407 36,281 -10.83 75.00 -330,525 2,721,075
2017-12-19 2012-11-26 4/A WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 4,407 40,688 12.15 14.24 62,756 579,397
2017-12-05 2017-12-04 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise 6,500 6,680 3,611.11
2017-12-05 2017-12-04 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -6,500 24,067 -21.26 97.83 -635,902 2,354,499
2017-12-05 2017-12-04 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 6,500 30,567 27.01 22.92 148,948 700,443
2017-11-22 2017-11-21 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -20,382 24,067 -45.85 94.26 -1,921,309 2,268,676
2017-11-15 2017-11-13 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -29,804 0 -100.00
2017-11-15 2017-11-13 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -600 44,449 -1.33 94.60 -56,760 4,204,875
2017-11-15 2017-11-13 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -29,204 45,049 -39.33 94.00 -2,745,322 4,234,831
2017-11-15 2017-11-13 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 29,804 74,253 67.05 10.26 305,864 762,021
2017-08-16 2017-08-15 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -13,794 44,449 -23.68 70.22 -968,620 3,121,227
2017-03-13 2017-03-10 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -12,000 58,243 -17.08 64.32 -771,785 3,745,922
2017-02-22 2017-02-17 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 5,375 5,375
2017-02-22 2017-02-17 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 20,995 20,995
2017-02-16 2017-02-15 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -909 70,243 -1.28 64.01 -58,185 4,496,254
2017-02-16 2017-02-14 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -3,152 0 -100.00
2017-02-16 2017-02-14 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 3,152 71,152 4.64
2016-12-05 2016-12-01 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 8,324 8,324
2016-08-25 2016-08-24 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -6,749 68,000 -9.03 51.93 -350,476 3,531,240
2016-08-25 2016-08-23 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -30,714 0 -100.00
2016-08-25 2016-08-23 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 30,714 74,749 69.75 15.80 485,435 1,181,408
2016-02-22 2016-02-18 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 6,566 6,566
2016-02-22 2016-02-18 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 24,996 24,996
2016-02-18 2016-02-17 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -1,172 44,035 -2.59 43.52 -51,005 1,916,403
2016-02-18 2016-02-15 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		M - Exercise -4,040 0 -100.00
2016-02-18 2016-02-15 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 4,040 45,207 9.81
2015-02-24 2015-02-20 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 3,619 3,619
2015-02-24 2015-02-20 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 12,066 12,066
2015-02-20 2015-02-18 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -1,823 41,167 -4.24 66.79 -121,753 2,749,433
2014-08-06 2014-08-04 4 WLKP Westlake Chemical Partners LP
Common Units (Limited Partner Interests) 		P - Purchase 10,000 10,000 24.00 240,000 240,000
2014-03-04 2014-03-03 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -15,357 15,357 -50.00
2014-03-04 2014-03-03 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -2,364 0 -100.00
2014-03-04 2014-03-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -17,721 21,495 -45.19 133.60 -2,367,526 2,871,732
2014-03-04 2014-03-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 15,357 39,216 64.37 31.61 485,435 1,239,618
2014-03-04 2014-03-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 2,364 23,859 11.00 31.61 74,726 754,183
2014-02-21 2014-02-19 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -1,184 21,495 -5.22 129.00 -152,736 2,772,855
2014-02-21 2014-02-19 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -6 22,679 -0.03 129.58 -777 2,938,745
2014-02-19 2014-02-14 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 1,576 1,576
2014-02-19 2014-02-14 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 4,908 4,908
2013-08-14 2013-08-12 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,930 22,685 -11.44 101.00 -295,930 2,291,185
2013-08-12 2013-08-08 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -3,000 25,615 -10.48 101.00 -303,000 2,587,118
2013-03-26 2013-03-25 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -3,272 0 -100.00
2013-03-26 2013-03-25 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -922 0 -100.00
2013-03-26 2013-03-25 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -235 0 -100.00
2013-03-26 2013-03-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -4,429 28,615 -13.40 95.00 -420,755 2,718,425
2013-03-26 2013-03-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 3,272 33,044 10.99 25.42 83,174 839,978
2013-03-26 2013-03-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 922 29,772 3.20 36.10 33,284 1,074,769
2013-03-26 2013-03-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 235 28,850 0.82 27.22 6,397 785,297
2013-03-04 2013-02-28 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -16 28,615 -0.06 84.70 -1,355 2,423,690
2013-03-04 2013-02-28 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -1,567 28,631 -5.19 84.09 -131,769 2,407,581
2013-02-20 2013-02-15 4 WLK WESTLAKE CHEMICAL CORP
Restricted Stock Units 		A - Award 2,020 2,020
2013-02-20 2013-02-15 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 5,370 5,370
2012-12-05 2012-12-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -758 30,198 -2.45 73.50 -55,713 2,219,553
2012-12-05 2012-12-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -1,967 30,956 -5.97 73.50 -144,574 2,275,266
2012-12-05 2012-12-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -316 32,923 -0.95 73.50 -23,226 2,419,840
2012-12-05 2012-12-03 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -3,042 33,239 -8.38 73.00 -222,066 2,426,447
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise 4,407 4,407
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -100 36,281 -0.27 74.94 -7,494 2,718,898
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -200 36,381 -0.55 74.93 -14,986 2,726,028
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -325 36,581 -0.88 74.92 -24,349 2,740,649
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -100 36,906 -0.27 74.89 -7,489 2,763,890
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -100 37,006 -0.27 74.88 -7,488 2,771,009
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -200 37,106 -0.54 74.86 -14,972 2,777,755
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -3,382 37,306 -8.31 74.84 -253,109 2,791,981
2012-11-28 2012-11-26 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 4,407 40,688 12.15 14.24 62,734 579,194
2012-11-27 2012-11-23 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise 1,220 8,814 16.07
2012-11-27 2012-11-23 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -1,220 36,281 -3.25 75.95 -92,659 2,755,542
2012-11-27 2012-11-23 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 1,220 37,501 3.36 14.24 17,367 533,827
2012-02-28 2012-02-24 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -11 36,281 -0.03 57.78 -636 2,096,316
2012-02-28 2012-02-24 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -2,889 36,292 -7.37 57.50 -166,118 2,086,790
2012-02-23 2012-02-17 4/A WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		A - Award 8,413 8,413
2012-02-23 2012-02-17 4/A WLK WESTLAKE CHEMICAL CORP
Common Stock 		A - Award 3,274 39,181 9.12
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -7,767 0 -100.00
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Employee Option (right to buy) 		M - Exercise -20,066 10,034 -66.66
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale 1,400 40,315 3.60 46.31 64,834 1,866,988
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -500 41,715 -1.18 46.34 -23,170 1,933,073
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -883 42,215 -2.05 46.35 -40,927 1,956,665
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -100 43,098 -0.23 46.37 -4,637 1,998,454
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -200 43,198 -0.46 46.38 -9,276 2,003,523
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,949 43,398 -6.36 46.39 -136,804 2,013,233
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -300 46,347 -0.64 46.40 -13,920 2,150,501
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -5,145 46,647 -9.93 46.41 -238,779 2,164,887
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -600 51,792 -1.15 46.43 -27,858 2,404,703
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -1,099 52,392 -2.05 46.44 -51,038 2,433,084
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,317 53,491 -4.15 46.45 -107,625 2,484,657
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -451 55,808 -0.80 46.46 -20,953 2,592,840
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -200 56,259 -0.35 46.47 -9,294 2,614,356
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -200 56,459 -0.35 46.48 -9,296 2,624,214
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -1,100 56,659 -1.90 46.49 -51,139 2,634,077
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -429 57,759 -0.74 46.50 -19,948 2,685,794
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -3,000 58,188 -4.90 46.52 -139,560 2,706,906
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,800 61,188 -4.38 46.53 -130,284 2,847,078
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -160 63,988 -0.25 46.58 -7,453 2,980,561
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,000 64,148 -3.02 46.67 -93,340 2,993,787
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		S - Sale -2,000 66,148 -2.93 46.68 -93,360 3,087,789
2012-02-22 2011-02-25 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		M - Exercise 7,767 68,148 12.86 19.29 149,825 1,314,575
2012-02-16 2012-02-14 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -146 35,907 -0.40 58.04 -8,474 2,084,078
2012-02-16 2012-02-14 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -20 36,053 -0.06 58.04 -1,161 2,092,516
2012-02-16 2012-02-14 4 WLK WESTLAKE CHEMICAL CORP
Common Stock 		F - Taxes -4,242 36,073 -10.52 57.08 -242,133 2,059,047
P
非衍生或衍生证券的公开市场或私下买入
S
非衍生或衍生证券的公开市场或私下卖出
A
公司向内部人员授予、奖励或以其他方式获取证券（例如股票期权）
C
衍生工具转换
D
将证券卖出或转让回公司
F
使用从公司收到的证券的一部分来支付行使价或税务负担。
G
内部人士赠送或接收他人赠送公司股票
K
股权掉期和类似的避险交易
M
行使或转换从公司获得的衍生证券（例如期权）
V
内部人士通过Form 4自愿报告的一笔交易
J
其他（附有交易描述的脚注）