XNYS:WLK Westlake Chemical Corp Insider Activity 4 Filing - 5/29/2012

Effective Date 5/29/2012

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FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Condon Donald Marion Jr
  2. Issuer Name and Ticker or Trading Symbol
WESTLAKE CHEMICAL CORP [WLK]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr VP, Olefins & Corp Bus Dev
(Last)
(First)
(Middle)
2801 POST OAK BLVD., SUITE 600
3. Date of Earliest Transaction (Month/Day/Year)
05/29/2012
(Street)

HOUSTON, TX 77056
4. If Amendment, Date Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 05/29/2012   M   5,519 A $14.235 26,639 D  
Common Stock 05/29/2012   M   5,381 A $20.525 32,020 D  
Common Stock 05/29/2012   M   7,678 A $31.61 39,698 D  
Common Stock 05/29/2012   S   10,504 D $57.23 29,194 D  
Common Stock 05/29/2012   S   2,900 D $57.2318 26,294 D  
Common Stock 05/29/2012   S   2,003 D $57.24 24,291 D  
Common Stock 05/29/2012   S   771 D $57.25 23,520 D  
Common Stock 05/29/2012   S   600 D $57.26 22,920 D  
Common Stock 05/29/2012   S   300 D $57.27 22,620 D  
Common Stock 05/29/2012   S   400 D $57.28 22,220 D  
Common Stock 05/29/2012   S   400 D $57.3 21,820 D  
Common Stock 05/29/2012   S   200 D $57.32 21,620 D  
Common Stock 05/29/2012   S   100 D $57.3203 21,520 D  
Common Stock 05/29/2012   S   100 D $57.322 21,420 D  
Common Stock 05/29/2012   S   200 D $57.3233 21,220 D  
Common Stock 05/29/2012   S   100 D $57.3275 21,120 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Option (right to buy) $31.61 05/29/2012   M   7,678   02/23/2012 02/23/2017 Common Stock 7,678 $ 0 7,679 D  
Employee Option (right to buy) $14.235 05/29/2012   M   5,519   02/13/2012 02/13/2019 Common Stock 5,519 $ 0 0 D  
Employee Option (right to buy) $20.525 05/29/2012   M   5,381   02/26/2012 02/26/2020 Common Stock 5,781 $ 0 2,691 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Condon Donald Marion Jr
2801 POST OAK BLVD.
SUITE 600
HOUSTON, TX 77056
      Sr VP, Olefins & Corp Bus Dev  

Signatures

 Donald Marion Condon by Stephen Wallace POA   05/31/2012
** Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.

XNYS:WLK Westlake Chemical Corp Insider Activity 4 Filling

Westlake Chemical Corp XNYS:WLK Stock - Get Insider Activity SEC Filing of Westlake Chemical Corp XNYS:WLK stocks, including company profile, shares outstanding, strategy, business segments, operations, officers, consolidated financial statements, financial notes and ownership information.

XNYS:WLK Westlake Chemical Corp Insider Activity 4 Filing - 5/29/2012
Name |  Ticker |  Star Rating |  Market Cap |  Stock Type |  Sector |  Industry Star Rating |  Investment Style |  Total Assets |  Category |  Top Holdings |  Top Sectors |  Symbol |  Title Star Rating |  Category |  Total Assets |  Top Holdings |  Top Sectors |  Symbol |  Name Title |  Date |  Author |  Collection |  Interest |  Popularity Topic |  Sector |  Key Indicators |  User Interest |  Market Cap |  Industry Name |  Ticker |  Star Rating |  Market Cap |  Stock Type |  Sector |  Industry Star Rating |  Investment Style |  Total Assets |  Category |  Top Holdings |  Top Sectors |  Symbol / Ticker |  Title Star Rating |  Category |  Total Assets |  Symbol / Ticker |  Name Title |  Date |  Author |  Collection |  Popularity |  Interest Title |  Date |  Company |  Symbol |  Interest |  Popularity Topic |  Sector |  Key Indicators |  User Interest |  Market Cap |  Industry Title |  Date |  Company |  Symbol |  Interest |  Popularity

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