WESTLAKE CORP - Director's Dealing 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2010-11-05

Reporting Person: Hansen David R (Sr VP Administration)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-11-05	Common Stock	M	6617	$14.235	Acquired	33851	Direct
2010-11-05	Common Stock	M	6062	$19.29	Acquired	39913	Direct
2010-11-05	Common Stock	S	79	$36.030	Disposed	39834	Direct
2010-11-05	Common Stock	S	600	$36.040	Disposed	39234	Direct
2010-11-05	Common Stock	S	2500	$36.090	Disposed	36734	Direct
2010-11-05	Common Stock	S	29	$36.100	Disposed	36705	Direct
2010-11-05	Common Stock	S	1150	$36.110	Disposed	35555	Direct
2010-11-05	Common Stock	S	500	$36.120	Disposed	35055	Direct
2010-11-05	Common Stock	S	100	$36.130	Disposed	34955	Direct
2010-11-05	Common Stock	S	800	$36.140	Disposed	34155	Direct
2010-11-05	Common Stock	S	1158	$36.150	Disposed	32997	Direct
2010-11-05	Common Stock	S	900	$36.160	Disposed	32097	Direct
2010-11-05	Common Stock	S	400	$36.170	Disposed	31697	Direct
2010-11-05	Common Stock	S	903	$36.180	Disposed	30794	Direct
2010-11-05	Common Stock	S	100	$36.188	Disposed	30694	Direct
2010-11-05	Common Stock	S	1438	$36.190	Disposed	29256	Direct
2010-11-05	Common Stock	S	100	$36.193	Disposed	29156	Direct
2010-11-05	Common Stock	S	209	$36.200	Disposed	28947	Direct
2010-11-05	Common Stock	S	100	$36.208	Disposed	28847	Direct
2010-11-05	Common Stock	S	700	$36.210	Disposed	28147	Direct
2010-11-05	Common Stock	S	313	$36.220	Disposed	27834	Direct
2010-11-05	Common Stock	S	100	$36.225	Disposed	27734	Direct
2010-11-05	Common Stock	S	100	$36.235	Disposed	27634	Direct
2010-11-05	Common Stock	S	400	$36.280	Disposed	27234	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-11-05	Employee Option (right to buy) (Common Stock)	$14.235	M	6617	Acquired	2019-02-13	Common Stock (6617)	Direct
2010-11-05	Employee Option (right to buy)	$19.29	M	6062	Acquired	2018-02-15	Common Stock (6062)	Direct