{"transactions":[{"id":4220596,"issuer":{"id":5149,"kind":"organization","name":"Westlake Chemical Partners LP"},"owners":[{"id":173459,"kind":"organization","name":"WPT LLC","position":1,"cik":"0001262852","reported_name":"WPT LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3555,"kind":"organization","name":"WESTLAKE CORP","position":2,"cik":"0001262823","reported_name":"WESTLAKE CHEMICAL CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173460,"kind":"organization","name":"WESTLAKE POLYMERS LLC","position":3,"cik":"0001262845","reported_name":"WESTLAKE POLYMERS LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173461,"kind":"organization","name":"WESTLAKE CHEMICAL INVESTMENTS, INC.","position":4,"cik":"0001262834","reported_name":"WESTLAKE CHEMICAL INVESTMENTS, INC.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173462,"kind":"organization","name":"WESTLAKE OLEFINS CORP","position":5,"cik":"0001262842","reported_name":"WESTLAKE OLEFINS CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173463,"kind":"organization","name":"TTWF LP","position":6,"cik":"0001299601","reported_name":"TTWF LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147072,"kind":"organization","name":"TTWFGP LLC","position":7,"cik":"0001299599","reported_name":"TTWFGP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Subordinated Units (Limited Partner Interests)","published_at":"2017-08-31T09:41:43.000Z","date":"2017-08-30","kind":"exercise","acquired":false,"shares":12686115,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"On August 30, 2017, pursuant to the terms of the agreement of limited partnership (the \"Partnership Agreement\") of the Issuer, the 12,686,115 subordinated units representing limited partner interests in the Issuer (the \"subordinated units\") acquired by WPT LLC (\"WPT\") in the Issuer's initial public offering converted into common units representing limited partner interests of the Issuer (\"common units\") on a one-for-one basis, resulting in the acquisition of 12,686,115 common units. The subordinated units had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 30, 2017, pursuant to the terms of the agreement of limited partnership (the \"Partnership Agreement\") of the Issuer, the 12,686,115 subordinated units representing limited partner interests in the Issuer (the \"subordinated units\") acquired by WPT LLC (\"WPT\") in the Issuer's initial public offering converted into common units representing limited partner interests of the Issuer (\"common units\") on a one-for-one basis, resulting in the acquisition of 12,686,115 common units. The subordinated units had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On August 30, 2017, pursuant to the terms of the agreement of limited partnership (the \"Partnership Agreement\") of the Issuer, the 12,686,115 subordinated units representing limited partner interests in the Issuer (the \"subordinated units\") acquired by WPT LLC (\"WPT\") in the Issuer's initial public offering converted into common units representing limited partner interests of the Issuer (\"common units\") on a one-for-one basis, resulting in the acquisition of 12,686,115 common units. The subordinated units had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On August 30, 2017, pursuant to the terms of the agreement of limited partnership (the \"Partnership Agreement\") of the Issuer, the 12,686,115 subordinated units representing limited partner interests in the Issuer (the \"subordinated units\") acquired by WPT LLC (\"WPT\") in the Issuer's initial public offering converted into common units representing limited partner interests of the Issuer (\"common units\") on a one-for-one basis, resulting in the acquisition of 12,686,115 common units. The subordinated units had no expiration date."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"As of August 30, 2017, (i) WPT owns 55.7% of the outstanding limited partner interests in the Issuer. Westlake Chemical Corporation (\"Westlake\") owns 100% of Westlake Olefins Corporation, which owns 100% of Westlake Chemical Investments, Inc., which owns 100% of Westlake Polymers LLC, which owns 100% of WPT. TTWF LP, a Delaware limited partnership, holds 92,010,554 shares of Westlake's common stock. TTWF GP LLC, a Delaware limited liability company, is the general partner of TTWF LP. Each of the reporting persons in the above described ownership chain of WPT may be deemed to indirectly own the common units and the subordinated units directly held by WPT."}],"balance_after":0,"derivative":{"underlying":"Common Units (Limited Partner Interests)","underlying_shares":12686115},"source":{"system":"sec-edgar","filing":"0000899243-17-021289","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1299601/000089924317021289/doc4.xml","form_type":"4"}},{"id":4220595,"issuer":{"id":5149,"kind":"organization","name":"Westlake Chemical Partners LP"},"owners":[{"id":173459,"kind":"organization","name":"WPT LLC","position":1,"cik":"0001262852","reported_name":"WPT LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3555,"kind":"organization","name":"WESTLAKE CORP","position":2,"cik":"0001262823","reported_name":"WESTLAKE CHEMICAL CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173460,"kind":"organization","name":"WESTLAKE POLYMERS LLC","position":3,"cik":"0001262845","reported_name":"WESTLAKE POLYMERS LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173461,"kind":"organization","name":"WESTLAKE CHEMICAL INVESTMENTS, INC.","position":4,"cik":"0001262834","reported_name":"WESTLAKE CHEMICAL INVESTMENTS, INC.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173462,"kind":"organization","name":"WESTLAKE OLEFINS CORP","position":5,"cik":"0001262842","reported_name":"WESTLAKE OLEFINS CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":173463,"kind":"organization","name":"TTWF LP","position":6,"cik":"0001299601","reported_name":"TTWF LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147072,"kind":"organization","name":"TTWFGP LLC","position":7,"cik":"0001299599","reported_name":"TTWFGP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-08-31T09:41:43.000Z","date":"2017-08-30","kind":"exercise","acquired":true,"shares":12686115,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 30, 2017, pursuant to the terms of the agreement of limited partnership (the \"Partnership Agreement\") of the Issuer, the 12,686,115 subordinated units representing limited partner interests in the Issuer (the \"subordinated units\") acquired by WPT LLC (\"WPT\") in the Issuer's initial public offering converted into common units representing limited partner interests of the Issuer (\"common units\") on a one-for-one basis, resulting in the acquisition of 12,686,115 common units. The subordinated units had no expiration date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On August 30, 2017, pursuant to the terms of the agreement of limited partnership (the \"Partnership Agreement\") of the Issuer, the 12,686,115 subordinated units representing limited partner interests in the Issuer (the \"subordinated units\") acquired by WPT LLC (\"WPT\") in the Issuer's initial public offering converted into common units representing limited partner interests of the Issuer (\"common units\") on a one-for-one basis, resulting in the acquisition of 12,686,115 common units. The subordinated units had no expiration date."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"As of August 30, 2017, (i) WPT owns 55.7% of the outstanding limited partner interests in the Issuer. Westlake Chemical Corporation (\"Westlake\") owns 100% of Westlake Olefins Corporation, which owns 100% of Westlake Chemical Investments, Inc., which owns 100% of Westlake Polymers LLC, which owns 100% of WPT. TTWF LP, a Delaware limited partnership, holds 92,010,554 shares of Westlake's common stock. TTWF GP LLC, a Delaware limited liability company, is the general partner of TTWF LP. Each of the reporting persons in the above described ownership chain of WPT may be deemed to indirectly own the common units and the subordinated units directly held by WPT."}],"balance_after":14122230,"source":{"system":"sec-edgar","filing":"0000899243-17-021289","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1299601/000089924317021289/doc4.xml","form_type":"4"}}]}