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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1262823	Westlake Chemical Corp	WLK	Industrial Organic Chemicals (2860)	760346924

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1298551	L Jeffrey Taylor	2801 Post Oak Boulevard, Suite 600 Houston TX 77056	Sr Vp, Polyethylene	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2014-02-27	1,295	$45.83	13,023	No	4	M	Direct
Common Stock	Acquisiton	2014-02-27	1,555	$60.11	14,578	No	4	M	Direct
Common Stock	Acquisiton	2014-02-27	1,006	$91.40	15,584	No	4	M	Direct
Common Stock	Disposition	2014-02-27	4,314	$132.62	11,270	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Option (right to buy)	Disposition	2014-02-27	1,295	$0.00	1,295	$45.83
Common Stock	Employee Option (right to buy)	Disposition	2014-02-27	1,555	$0.00	1,555	$60.11
Common Stock	Employee Option (right to buy)	Disposition	2014-02-27	1,006	$0.00	1,006	$91.40

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2021-02-18	No	4	M	Direct
1,556	2022-02-17	No	4	M	Direct
2,014	2023-02-15	No	4	M	Direct

Footnotes

The stock options are exercisable in three installments of 33%, 33% and 34% on February 18, 2012, 2013 and 2014, respectively.
The stock options are exercisable in three installments of 33%, 33% and 34% on February 17, 2013, 2014 and 2015, respectively.
The stock options are exercisable in three installments of 33%, 33% and 34% on February 15, 2014, 2015 and 2016, respectively.
In accordance with the Securities and Exchange Commission's No Action Letter dated June 25, 2008, we have aggregated the sales that occurred on February 27, 2014 for ease of reporting. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $132.38 to $132.78, inclusive. The reporting person undertakes to provide to Westlake Chemical Corporation, any security holder of Westlake Chemical Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (4) to this Form 4.