WESTLAKE CORP — Director's Dealing 2010

Nov 9, 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: Condon Donald Marion Jr (Sr VP, Olefins & Corp Bus Dev)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-11-05	Common Stock	M	5518	$14.235	Acquired	26932	Direct
2010-11-05	Common Stock	S	918	$35.90	Disposed	26014	Direct
2010-11-05	Common Stock	S	1494	$35.94	Disposed	24520	Direct
2010-11-05	Common Stock	S	800	$35.95	Disposed	23720	Direct
2010-11-05	Common Stock	S	800	$35.96	Disposed	22920	Direct
2010-11-05	Common Stock	S	400	$35.98	Disposed	22520	Direct
2010-11-05	Common Stock	S	500	$36.00	Disposed	22020	Direct
2010-11-05	Common Stock	S	200	$36.04	Disposed	21820	Direct
2010-11-05	Common Stock	S	400	$36.05	Disposed	21420	Direct
2010-11-05	Common Stock	S	6	$36.07	Disposed	21414	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-11-05	Employee Option (right to buy)	$14.235	M	5518	Acquired	2019-02-13	Common Stock (5518)	Direct