Ownership Submission
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 *
Graff Michael J
  2. Issuer Name and Ticker or Trading Symbol
WESTLAKE CHEMICAL CORP [WLK]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
2801 POST OAK BOULEVARD, SUITE 600
3. Date of Earliest Transaction (Month/Day/Year)
08/22/2016
(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 08/22/2016   M   603 A (1) 2,132 D  
Common Stock 08/22/2016   M   357 A (1) 2,489 D  
Common Stock 08/23/2016   M   588 A (1) 3,077 D  

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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
Restricted Stock Units (1) 08/22/2016   M     603   (2)   (2) Common Stock 603 $ 0 1,206 D  
Restricted Stock Units (1) 08/22/2016   M     357   (3)   (3) Common Stock 357 $ 0 357 D  
Restricted Stock Units (1) 08/23/2016   M     588   (4)   (4) Common Stock 588 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Graff Michael J
2801 POST OAK BOULEVARD, SUITE 600
HOUSTON, TX 77056
  X      

Signatures

 Michael J. Graff by J. Iglesias POA   08/24/2016
**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).
(1) Restricted stock units convert into Issuer's common stock on a one-for-one basis.
(2) On August 21, 2015, the reporting person was granted 1,809 restricted stock units vesting in three equal annual installments beginning on the first anniversary of the grant date.
(3) On August 22, 2014, the reporting person was granted 1,071 restricted stock units vesting in three equal annual installments beginning on the first anniversary of the grant date.
(4) On August 23, 2013, the reporting person was granted 1,760 restricted stock units (such number takes into account the Issuer's two-for-one stock split on March 18, 2014) vesting in three equal annual installments beginning on the first anniversary of the grant date.

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