SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Schubert Lawrence

(Last)

(First)

(Middle)

2801 POST OAK BLVD.

SUITE 600

(Street)

HOUSTON

77056

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/01/2017

3. Issuer Name and Ticker or Trading Symbol
WESTLAKE CHEMICAL CORP [ WLK ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Vice President, Polyethylene

5. If Amendment, Date of 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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Restricted Stock Units	⁽²⁾	⁽²⁾	Common Stock	573	⁽¹⁾	D
Restricted Stock Units	⁽³⁾	⁽³⁾	Common Stock	904	⁽¹⁾	D
Restricted Stock Units	⁽⁴⁾	⁽⁴⁾	Common Stock	3,330	⁽¹⁾	D
Restricted Stock Units	⁽⁵⁾	⁽⁵⁾	Common Stock	744	⁽¹⁾	D
Employee Option (right to buy)	⁽⁶⁾	02/14/2024	Common Stock	1,420	$63.9775	D
Employee Option (right to buy)	⁽⁷⁾	02/20/2025	Common Stock	1,910	$68.09	D
Employee Option (right to buy)	⁽⁸⁾	02/18/2026	Common Stock	2,307	$44.42	D
Employee Option (right to buy)	⁽⁹⁾	02/17/2027	Common Stock	2,905	$61.865	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of Westlake Chemical Corporation common stock.

2. The restricted stock units will vest three years from the date of grant (February 20, 2018).

3. The restricted stock units will vest three years from the date of grant (February 18, 2019).

4. The restricted stock units will vest three years from the date of grant (December 1, 2019).

5. The restricted stock units will vest three years from the date of grant (February 17, 2020).

6. The stock options are exercisable in three installments of 33%, 33%, and 34% on February 14, 2015, 2016 and 2017, respectively.

7. The stock options are exercisable in three installments of 33%, 33%, and 34% on February 20, 2016, 2017 and 2018, respectively.

8. The stock options are exercisable in three installments of 33%, 33%, and 34% on February 18, 2017, 2018 and 2019, respectively.

9. The stock options are exercisable in three installments of 33%, 33%, and 34% on February 17, 2018, 2019 and 2020, respectively.

	Lawrence Schubert by J. Iglesias POA	03/08/2017
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.