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Filing Details

Accession Number:: 0001567619-20-015789
Form Type:: 4/A
Zero Holdings:: No
Publication Time:: 2020-08-20 14:09:23
Reporting Period:: 2020-03-13

Accepted Time:: 2020-08-20 14:09:23
Original Submission Date:: 2020-03-16
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1262823	Westlake Chemical Corp	WLK	Industrial Organic Chemicals (2860)	760346924

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1299599	Ttwfgp Llc	2801 Post Oak Boulevard, Suite 600 Houston TX 77056		No	No	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2020-03-13	160,000	$32.94	160,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-16	160,000	$31.42	320,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-17	165,000	$33.25	485,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-18	165,000	$31.41	650,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-19	165,000	$37.66	815,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-24	145,000	$36.53	960,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-25	130,000	$40.77	1,090,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-26	145,000	$41.00	1,235,000	No	4	P	Direct
Common Stock	Acquisiton	2020-03-27	160,000	$39.08	1,395,000	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	92,010,554	Indirect	TTWF LP

Footnotes

Reflects the average price of shares purchased March 13, 2020. Each line in Table I of the original Form 4, filed March 16, 2020, correctly aggregated purchases within a $1.00 price range.
Amended to reflect total direct ownership of Issuer shares as of the original Form 4 filing date. Purchases reported on and after March 16, 2020 were erroneously added to existing indirect holdings. These indirect holdings of 46,005,227 (which correspond to a post stock-split total of 92,010,554 shares) are owned by TTWF LP and further described by footnote 12 below.
Erroneously reported as indirect holdings. Amended to reflect direct ownership.
Reflects the average price of shares purchased March 16, 2020. Each line in Table I of the original Form 4, filed March 17, 2020, correctly aggregated purchases within a $1.00 price range.
Reflects the average price of shares purchased March 17, 2020. Each line in Table I of the original Form 4, filed March 18, 2020, correctly aggregated purchases within a $1.00 price range.
Reflects the average price of shares purchased March 18, 2020. Each line in Table I of the original Form 4, filed March 19, 2020, correctly aggregated purchases within a $1.00 price range.
Reflects the average price of shares purchased March 19, 2020 Each line in Table I of the original Form 4, filed March 20, 2020, correctly aggregated purchases within a $1.00 price range.
Reflects the average price of shares purchased March 24, 2020. Each line in Table I of the original Form 4, filed March 25, 2020, correctly aggregated purchases within a $1.00 price range.
Reflects the average price of shares purchased March 25, 2020. Each line in Table I of the original Form 4, filed March 26, 2020, correctly aggregated purchases within a $1.00 price range.
Reflects the average price of shares purchased March 26, 2020. The original Form 4, filed March 27, 2020, provides weighted average pricing for each transaction within a $1.00 threshold in column 4 and related footnotes.
Reflects the average price of shares purchased March 27, 2020. Each line in Table I of the original Form 4, filed March 30, 2020, correctly aggregated purchases within a $1.00 price range.
92,010,554 shares of Issuer are held through TTWF LP, a Delaware limited partnership. Reporting person is the general partner of TTWF LP. Reporting Person has no direct pecuniary interest in these securities but may be deemed to beneficially own an indirect pecuniary interest in these securities.