{"transactions":[{"id":918573,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"ten_percent_owner":true}},{"id":67644,"kind":"organization","name":"OXY USA INC","position":2,"cik":"0000728399","reported_name":"OXY USA INC","relationship":{"ten_percent_owner":true}},{"id":67645,"kind":"organization","name":"OXY Oil Partners, Inc.","position":3,"cik":"0001785615","reported_name":"OXY Oil Partners, Inc.","relationship":{"ten_percent_owner":true}},{"id":67646,"kind":"organization","name":"Baseball Merger Sub 2, Inc.","position":4,"cik":"0001785593","reported_name":"Baseball Merger Sub 2, Inc.","relationship":{"ten_percent_owner":true}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":5,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"ten_percent_owner":true}},{"id":67648,"kind":"organization","name":"ANADARKO HOLDING Co","position":6,"cik":"0001570992","reported_name":"ANADARKO HOLDING Co","relationship":{"ten_percent_owner":true}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2026-02-05T17:34:29.000Z","date":"2026-02-03","kind":"other","planned":false,"acquired":false,"shares":15307402,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On January 16, 2026, Western Gas Resources, Inc. (\"WGRI\") entered into a Unit Redemption Agreement with the Issuer and the other parties thereto, pursuant to which WGRI transferred and surrendered on February 3, 2026 an aggregate of 15,307,402 common units representing limited partner interests in the Issuer (the \"Common Units\") to the Issuer in connection with certain amendments to existing operating agreements, as described in the Unit Redemption Agreement."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On January 16, 2026, Western Gas Resources, Inc. (\"WGRI\") entered into a Unit Redemption Agreement with the Issuer and the other parties thereto, pursuant to which WGRI transferred and surrendered on February 3, 2026 an aggregate of 15,307,402 common units representing limited partner interests in the Issuer (the \"Common Units\") to the Issuer in connection with certain amendments to existing operating agreements, as described in the Unit Redemption Agreement."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, WGRI holds 140,912,118 Common Units, APC Midstream Holdings, LLC (\"APCMH\") holds 457,849 Common Units and Anadarko USH1 Corporation (\"AUSHI\") holds 9,004,209 Common Units. WGRI also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"OXY USA Inc. (\"OXY USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Anadarko Petroleum Corporation (\"APC\") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company (\"AHC\") and (ii) indirectly, 100% of the common stock of WGRI and Kerr-McGee Corporation (\"KMG\"). WGRI is the sole member of APCMH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation (\"KMWW\"), and APC and KMWW together indirectly own 100% of the common stock of AUSH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGRI, AUSH1, KMG, APCMH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":150374176,"source":{"system":"sec-edgar","filing":"0001140361-26-003924","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728399/000114036126003924/form4.xml","form_type":"4"}},{"id":1432035,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67644,"kind":"organization","name":"OXY USA INC","position":2,"cik":"0000728399","reported_name":"OXY USA INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67645,"kind":"organization","name":"OXY Oil Partners, Inc.","position":3,"cik":"0001785615","reported_name":"OXY Oil Partners, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67646,"kind":"organization","name":"Baseball Merger Sub 2, Inc.","position":4,"cik":"0001785593","reported_name":"Baseball Merger Sub 2, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":5,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67648,"kind":"organization","name":"ANADARKO HOLDING Co","position":6,"cik":"0001570992","reported_name":"ANADARKO HOLDING Co","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2024-08-16T17:11:51.000Z","date":"2024-08-14","kind":"sale","planned":false,"acquired":false,"shares":19500000,"price":35.75,"value":697125000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 14, 2024, WGR Asset Holding Company LLC (\"WGRAH\") and Anadarko USH1 Corporation (\"AUSH1\") sold 14,139,260 and 5,360,740 common units representing limited partner interests in the Issuer (the \"Common Units\"), respectively, in an underwritten public offering at a price of $35.75 per Common Unit."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On August 14, 2024, WGR Asset Holding Company LLC (\"WGRAH\") and Anadarko USH1 Corporation (\"AUSH1\") sold 14,139,260 and 5,360,740 common units representing limited partner interests in the Issuer (the \"Common Units\"), respectively, in an underwritten public offering at a price of $35.75 per Common Unit."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, Western Gas Resources, Inc. (\"WGRI\") holds 156,219,520 Common Units, APC Midstream Holdings, LLC (\"APCMH\") holds 457,849 Common Units and AUSHI holds 9,004,209 Common Units. WGRI also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"OXY USA Inc. (\"OXY USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Anadarko Petroleum Corporation (\"APC\") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company (\"AHC\") and (ii) indirectly, 100% of the common stock of WGRI and Kerr-McGee Corporation (\"KMG\"). WGRI is the sole member of APCMH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation (\"KMWW\"), and APC and KMWW together indirectly own 100% of the common stock of AUSH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGRI, AUSH1, KMG, APCMH, KMWW and WGRAH are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":165681578,"source":{"system":"sec-edgar","filing":"0000797468-24-000146","document":"wk-form4_1723842705.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728399/000079746824000146/wk-form4_1723842705.xml","form_type":"4"}},{"id":1781601,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"ten_percent_owner":true}},{"id":67644,"kind":"organization","name":"OXY USA INC","position":2,"cik":"0000728399","reported_name":"OXY USA INC","relationship":{"ten_percent_owner":true}},{"id":67645,"kind":"organization","name":"OXY Oil Partners, Inc.","position":3,"cik":"0001785615","reported_name":"OXY Oil Partners, Inc.","relationship":{"ten_percent_owner":true}},{"id":67646,"kind":"organization","name":"Baseball Merger Sub 2, Inc.","position":4,"cik":"0001785593","reported_name":"Baseball Merger Sub 2, Inc.","relationship":{"ten_percent_owner":true}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":5,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"ten_percent_owner":true}},{"id":67648,"kind":"organization","name":"ANADARKO HOLDING Co","position":6,"cik":"0001570992","reported_name":"ANADARKO HOLDING Co","relationship":{"ten_percent_owner":true}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2023-09-14T17:54:33.000Z","date":"2023-09-12","kind":"sale","planned":false,"acquired":false,"shares":5100000,"price":25,"value":127500000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 7, 2023, Western Midstream Partners, LP (the \"Issuer\") entered into a unit purchase agreement with Western Gas Resources, Inc. (\"WGRI\") pursuant to which the Issuer agreed to purchase 5,100,000 common units representing limited partner interests in the Issuer (the \"Common Units\") from WGRI at a price of $25.00 per Common Unit. WGRI and the Issuer completed the sale of such Common Units on September 12, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On September 7, 2023, Western Midstream Partners, LP (the \"Issuer\") entered into a unit purchase agreement with Western Gas Resources, Inc. (\"WGRI\") pursuant to which the Issuer agreed to purchase 5,100,000 common units representing limited partner interests in the Issuer (the \"Common Units\") from WGRI at a price of $25.00 per Common Unit. WGRI and the Issuer completed the sale of such Common Units on September 12, 2023."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, WGRI holds 156,219,520 Common Units, WGR Asset Holding Company LLC (\"WGRAH\") holds 14,139,260 Common Units, APC Midstream Holdings, LLC (\"APCMH\") holds 457,849 Common Units and Anadarko USH1 Corporation (\"Anadarko USH1\") holds 14,364,949 Common Units. WGRI also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"OXY USA Inc. (\"OXY USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Anadarko Petroleum Corporation (\"APC\") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company (\"AHC\") and (ii) indirectly, 100% of the common stock of WGRI and Kerr-McGee Corporation (\"KMG\"). WGRI is the sole member of APCMH, and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation (\"KMWW\"), and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGRI, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":185181578,"source":{"system":"sec-edgar","filing":"0001140361-23-044014","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728399/000114036123044014/form4.xml","form_type":"4"}},{"id":2203004,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"ten_percent_owner":true}},{"id":67644,"kind":"organization","name":"OXY USA INC","position":2,"cik":"0000728399","reported_name":"OXY USA INC","relationship":{"ten_percent_owner":true}},{"id":67645,"kind":"organization","name":"OXY Oil Partners, Inc.","position":3,"cik":"0001785615","reported_name":"OXY Oil Partners, Inc.","relationship":{"ten_percent_owner":true}},{"id":67646,"kind":"organization","name":"Baseball Merger Sub 2, Inc.","position":4,"cik":"0001785593","reported_name":"Baseball Merger Sub 2, Inc.","relationship":{"ten_percent_owner":true}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":5,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"ten_percent_owner":true}},{"id":67648,"kind":"organization","name":"ANADARKO HOLDING Co","position":6,"cik":"0001570992","reported_name":"ANADARKO HOLDING Co","relationship":{"ten_percent_owner":true}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2022-07-25T20:45:56.000Z","date":"2022-07-21","kind":"sale","acquired":false,"shares":10000000,"price":25.25,"value":252500000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On July 17, 2022, Western Midstream Partners, LP (the \"Issuer\") entered into a unit purchase agreement with WGR Asset Holding Company LLC (\"WGRAH\") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the \"Common Units\") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On July 17, 2022, Western Midstream Partners, LP (the \"Issuer\") entered into a unit purchase agreement with WGR Asset Holding Company LLC (\"WGRAH\") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the \"Common Units\") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, Western Gas Resources, Inc. (\"WGR\") holds 161,319,520 Common Units, WGRAH holds 14,139,260 Common Units, APC Midstream Holdings, LLC (\"APCMH\") holds 457,849 Common Units and Anadarko USH1 Corporation (\"Anadarko USH1\") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"OXY USA Inc. (\"OXY USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Anadarko Petroleum Corporation (\"APC\") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company (\"AHC\") and (ii) indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation (\"KMG\"). WGR is the sole member of APCMH, and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation (\"KMWW\"), and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":190281578,"source":{"system":"sec-edgar","filing":"0001140361-22-026895","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728399/000114036122026895/form4.xml","form_type":"4"}},{"id":2472449,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"ten_percent_owner":true}},{"id":67644,"kind":"organization","name":"OXY USA INC","position":2,"cik":"0000728399","reported_name":"OXY USA INC","relationship":{"ten_percent_owner":true}},{"id":132385,"kind":"organization","name":"Occidental Permian Manager LLC","position":3,"cik":"0001785602","reported_name":"Occidental Permian Manager LLC","relationship":{"ten_percent_owner":true}},{"id":67646,"kind":"organization","name":"Baseball Merger Sub 2, Inc.","position":4,"cik":"0001785593","reported_name":"Baseball Merger Sub 2, Inc.","relationship":{"ten_percent_owner":true}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":5,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"ten_percent_owner":true}},{"id":67645,"kind":"organization","name":"OXY Oil Partners, Inc.","position":6,"cik":"0001785615","reported_name":"OXY Oil Partners, Inc.","relationship":{"ten_percent_owner":true}},{"id":67648,"kind":"organization","name":"ANADARKO HOLDING Co","position":7,"cik":"0001570992","reported_name":"ANADARKO HOLDING Co","relationship":{"ten_percent_owner":true}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2021-12-15T21:28:17.000Z","date":"2021-12-13","kind":"sale","acquired":false,"shares":2500000,"price":20.09,"value":50225000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On December 7, 2021, Western Midstream Partners, LP (the \"Issuer\") entered into unit purchase agreement with WGR Asset Holding Company LLC (\"WGRAH\") pursuant to which the Issuer agreed to purchase 2,500,000 common units representing limited partner interests in the Issuer (the \"Common Units\") from WGRAH at a price of $20.09 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on December 13, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On December 7, 2021, Western Midstream Partners, LP (the \"Issuer\") entered into unit purchase agreement with WGR Asset Holding Company LLC (\"WGRAH\") pursuant to which the Issuer agreed to purchase 2,500,000 common units representing limited partner interests in the Issuer (the \"Common Units\") from WGRAH at a price of $20.09 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on December 13, 2021."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, Western Gas Resources, Inc. (\"WGR\") holds 161,319,520 Common Units, WGRAH holds 24,139,260 Common Units, APC Midstream Holdings, LLC (\"APCMH\") holds 457,849 Common Units and Anadarko USH1 Corporation (\"Anadarko USH1\") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"OXY USA Inc. (\"OXY USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). OXY USA owns 100% of the outstanding membership interests of Occidental Permian Manager LLC (\"OPM\") and 100% of the common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP, OPM and OXY USA together own 100% of the membership interests of New OPL, LLC (\"OPL\"). OPL owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Anadarko Petroleum Corporation (\"APC\") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company (\"AHC\") and (ii) indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation (\"KMG\"). WGR is the sole member of APCMH, and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation (\"KMWW\"), and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, OXY USA, OPM, OOP, OPL, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":200281578,"source":{"system":"sec-edgar","filing":"0001140361-21-041953","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728399/000114036121041953/form4.xml","form_type":"4"}},{"id":2770107,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67644,"kind":"organization","name":"OXY USA INC","position":2,"cik":"0000728399","reported_name":"OXY USA INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":132385,"kind":"organization","name":"Occidental Permian Manager LLC","position":3,"cik":"0001785602","reported_name":"Occidental Permian Manager LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67645,"kind":"organization","name":"OXY Oil Partners, Inc.","position":4,"cik":"0001785615","reported_name":"OXY Oil Partners, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67646,"kind":"organization","name":"Baseball Merger Sub 2, Inc.","position":5,"cik":"0001785593","reported_name":"Baseball Merger Sub 2, Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":6,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2021-03-29T21:29:53.000Z","date":"2021-03-25","kind":"sale","acquired":false,"shares":11500000,"price":17.25,"value":198375000.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 22, 2021, Western Midstream Partners, LP (the \"Issuer\"), Western Midstream Holdings, LLC, WGR Asset Holding Company LLC (\"WGRAH\") and BofA Securities, Inc., as underwriter (the \"Underwriter\"), entered into an underwriting agreement pursuant to which WGRAH agreed to sell to the Underwriter, and the Underwriter agreed to purchase from WGRAH, subject to and upon the terms and conditions set forth therein, up to 11,500,000 common units representing limited partner interests in the Issuer (the \"Common Units\") at a price of $17.25 per Common Unit. WGRAH completed the sale of 11,500,000 Common Units to the Underwriter on March 25, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On March 22, 2021, Western Midstream Partners, LP (the \"Issuer\"), Western Midstream Holdings, LLC, WGR Asset Holding Company LLC (\"WGRAH\") and BofA Securities, Inc., as underwriter (the \"Underwriter\"), entered into an underwriting agreement pursuant to which WGRAH agreed to sell to the Underwriter, and the Underwriter agreed to purchase from WGRAH, subject to and upon the terms and conditions set forth therein, up to 11,500,000 common units representing limited partner interests in the Issuer (the \"Common Units\") at a price of $17.25 per Common Unit. WGRAH completed the sale of 11,500,000 Common Units to the Underwriter on March 25, 2021."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, Western Gas Resources, Inc. (\"WGR\") holds 161,319,520 Common Units, WGRAH holds 26,639,260 Common Units, APC Midstream Holdings, LLC (\"APCMH\") holds 457,849 Common Units and Anadarko USH1 Corporation (\"Anadarko USH1\") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Oxy USA Inc. (\"Oxy USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). Oxy USA owns 100% of the outstanding membership interests of Occidental Permian Manager LLC (\"OPM\") and 100% of the common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP, OPM and Oxy USA together own 100% of the membership interests of New OPL, LLC (\"OPL\"). OPL owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Anadarko Petroleum Corporation (\"APC\") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company (\"AHC\") and (ii) indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation (\"KMG\"). WGR is the sole member of APCMH and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation (\"KMWW\"), and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, Oxy USA, OPM, OOP, OPL, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":202781578,"source":{"system":"sec-edgar","filing":"0001567619-21-007163","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728399/000156761921007163/doc1.xml","form_type":"4"}},{"id":3031883,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"ten_percent_owner":true}},{"id":67644,"kind":"organization","name":"OXY USA INC","position":2,"cik":"0000728399","reported_name":"OXY USA INC","relationship":{"ten_percent_owner":true}},{"id":132385,"kind":"organization","name":"Occidental Permian Manager LLC","position":3,"cik":"0001785602","reported_name":"Occidental Permian Manager LLC","relationship":{"ten_percent_owner":true}},{"id":67645,"kind":"organization","name":"OXY Oil Partners, Inc.","position":4,"cik":"0001785615","reported_name":"OXY Oil Partners, Inc.","relationship":{"ten_percent_owner":true}},{"id":67646,"kind":"organization","name":"Baseball Merger Sub 2, Inc.","position":5,"cik":"0001785593","reported_name":"Baseball Merger Sub 2, Inc.","relationship":{"ten_percent_owner":true}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":6,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"ten_percent_owner":true}}],"security":"COMMON UNITS (LIMITED PARTNER INTERESTS)","published_at":"2020-09-15T21:34:27.000Z","date":"2020-09-11","kind":"disposition_to_issuer","acquired":false,"shares":27855398,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 11, 2020, the Issuer entered into a unit redemption agreement with Anadarko Petroleum Corporation (\"APC\"), pursuant to which the Issuer redeemed and canceled 27,855,398 Common Units (the \"Subject Units\"), in exchange for the Issuer transferring and assigning its pro rata portion of a 30-year note bearing interest at a fixed annual rate of 6.50% owed by APC to the Issuer (the \"APC Note\"), with APC canceling and retiring such portion of the APC Note and the principal and accrued interest owed thereunder. In connection with the foregoing transaction: (i) Anadarko E&P Onshore LLC, (\"AE&P\") transferred 17,221,724 Common Units to Anadarko USH1 Corporation (\"Anadarko USH1\"), (ii) APC acquired 24,313,701 Common Units from APC Midstream Holdings, LLC (\"APCMH\"), 684,922 Common Units from Kerr-McGee Worldwide Corporation (\"KMWW\"), and 2,856,775 Common Units from Anadarko USH1."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On September 11, 2020, the Issuer entered into a unit redemption agreement with Anadarko Petroleum Corporation (\"APC\"), pursuant to which the Issuer redeemed and canceled 27,855,398 Common Units (the \"Subject Units\"), in exchange for the Issuer transferring and assigning its pro rata portion of a 30-year note bearing interest at a fixed annual rate of 6.50% owed by APC to the Issuer (the \"APC Note\"), with APC canceling and retiring such portion of the APC Note and the principal and accrued interest owed thereunder. In connection with the foregoing transaction: (i) Anadarko E&P Onshore LLC, (\"AE&P\") transferred 17,221,724 Common Units to Anadarko USH1 Corporation (\"Anadarko USH1\"), (ii) APC acquired 24,313,701 Common Units from APC Midstream Holdings, LLC (\"APCMH\"), 684,922 Common Units from Kerr-McGee Worldwide Corporation (\"KMWW\"), and 2,856,775 Common Units from Anadarko USH1."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, Western Gas Resources, Inc. (\"WGR\") holds 170,380,161 Common Units, WGR Asset Holding Company LLC (\"WGRAH\") holds 38,139,260 Common Units, APCMH holds 457,849 Common Units and Anadarko USH1 holds 14,365,949 Common Units. Neither AE&P nor KMWW directly hold any Common Units following the transaction reported herein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Oxy USA Inc. (\"Oxy USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). Oxy USA owns 100% of the outstanding membership interests of Occidental Permian Manager LLC (\"OPM\") and 100% of the common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP, OPM and Oxy USA together own 100% of the membership interests of New OPL, LLC (\"OPL\"). OPL owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"APC is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company (\"AHC\") and (ii) indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation (\"KMG\"). WGR is the sole member of APCMH, and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of KMWW, and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1.  Accordingly, Oxy USA, OPM, OOP, OPL, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":214281578,"source":{"system":"sec-edgar","filing":"0001140361-20-020564","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728399/000114036120020564/form4.xml","form_type":"4"}},{"id":3325409,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":2999,"kind":"organization","name":"OCCIDENTAL PETROLEUM CORP /DE/","symbol":"OXY","position":1,"cik":"0000797468","reported_name":"OCCIDENTAL PETROLEUM CORP /DE/","relationship":{"ten_percent_owner":true}},{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":2,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"ten_percent_owner":true}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":3,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"ten_percent_owner":true}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":4,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"ten_percent_owner":true}},{"id":88266,"kind":"organization","name":"WGR Asset Holding Co LLC","position":5,"cik":"0001771584","reported_name":"WGR Asset Holding Co LLC","relationship":{"ten_percent_owner":true}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":6,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"ten_percent_owner":true}},{"id":146653,"kind":"organization","name":"Anadarko E&P Onshore LLC","position":7,"cik":"0001570991","reported_name":"Anadarko E&P Onshore LLC","relationship":{"ten_percent_owner":true}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-01-03T21:35:24.000Z","date":"2019-12-31","kind":"disposition_to_issuer","acquired":false,"shares":9060641,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On December 31, 2019, the Issuer entered into a partnership interests exchange agreement with Western Gas Resources, Inc. (\"WGR\") and Western Midstream Holdings, LLC (the \"General Partner\"), pursuant to which the Issuer cancelled the non-economic general partner interest in the Issuer held by the General Partner and simultaneously issued 9,060,641 general partner units representing a 2.0% economic general partner interest in the Issuer to the General Partner, in exchange for which WGR transferred 9,060,641 Common Units (the \"Consideration Units\") equal to 2.0% of all issued and outstanding Common Units to the General Partner, and the General Partner then transferred the Consideration Units to the Issuer, which the Issuer cancelled immediately upon receipt."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On December 31, 2019, the Issuer entered into a partnership interests exchange agreement with Western Gas Resources, Inc. (\"WGR\") and Western Midstream Holdings, LLC (the \"General Partner\"), pursuant to which the Issuer cancelled the non-economic general partner interest in the Issuer held by the General Partner and simultaneously issued 9,060,641 general partner units representing a 2.0% economic general partner interest in the Issuer to the General Partner, in exchange for which WGR transferred 9,060,641 Common Units (the \"Consideration Units\") equal to 2.0% of all issued and outstanding Common Units to the General Partner, and the General Partner then transferred the Consideration Units to the Issuer, which the Issuer cancelled immediately upon receipt."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On December 31, 2019, the Issuer entered into a partnership interests exchange agreement with Western Gas Resources, Inc. (\"WGR\") and Western Midstream Holdings, LLC (the \"General Partner\"), pursuant to which the Issuer cancelled the non-economic general partner interest in the Issuer held by the General Partner and simultaneously issued 9,060,641 general partner units representing a 2.0% economic general partner interest in the Issuer to the General Partner, in exchange for which WGR transferred 9,060,641 Common Units (the \"Consideration Units\") equal to 2.0% of all issued and outstanding Common Units to the General Partner, and the General Partner then transferred the Consideration Units to the Issuer, which the Issuer cancelled immediately upon receipt."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Following the transaction reported herein, 161,319,520 Common Units are held by WGR, 24,771,550 Common Units are held by APC Midstream Holdings, LLC (\"AMH\"), 38,139,260 Common Units are held by WGR Asset Holding Company LLC (\"WGRAH\"), 684,922 Common Units are held by Kerr-McGee Worldwide Corporation (\"KWC\") and 17,221,724 Common Units are held by Anadarko E&P Onshore LLC (\"AE&P\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Oxy USA Inc. (\"Oxy USA\") is a wholly owned subsidiary of Occidental Petroleum Corporation (\"Occidental\"). Oxy USA owns 100% of the outstanding membership interests of Occidental Permian Manager LLC (\"OPM\") and 100% of the common stock of OXY Oil Partners, Inc. (\"OOP\"). OOP is the limited partner of Occidental Permian Ltd. (\"OPL\") holding 98% of its partnership interests. OPM is the general partner of OPL, owning 2% of its outstanding partnership interests. OPL owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. (\"BMS\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Anadarko Petroleum Corporation (\"Anadarko\") is a wholly owned subsidiary of BMS. Anadarko owns (i) 100% of Anadarko Holding Company (\"AHC\"), (ii) directly and indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation (\"KMG\"), and (iii) indirectly, 100% of the outstanding membership interests in Anadarko Consolidated Holdings LLC (\"ACH\"). WGR is the sole member of AMH, which is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of KWC. ACH is the sole member of AE&P. Accordingly, Oxy USA, OPM, OOP, OPL, BMS, Anadarko, WGR, AMH, WGRAH, KWC and AE&P are all direct or indirect wholly owned subsidiaries of Occidental."}],"balance_after":242136976,"source":{"system":"sec-edgar","filing":"0001140361-20-000275","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/773910/000114036120000275/form4.xml","form_type":"4"}},{"id":3621264,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Midstream Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2019-03-04T20:54:23.000Z","date":"2019-02-28","kind":"disposition_to_issuer","acquired":false,"shares":14681388,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On February 27, 2019, (i) Western Gas Equity Partners, LP (\"WGP\") owned 50,132,046 common units of Western Gas Partners, LP (\"WES\") and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC (\"WES GP\"), and APC Midstream Holdings, LLC (\"AMH\") owned 1,562,251 WES common units and 14,681,388 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owned (A) all of the membership interests of WGP GP, the general partner of WGP, (B) 77.8% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owned all of the issued and outstanding shares of common stock of WGR."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(Continued from Footnote 1) Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH. Also prior to the Effective Time, (i) Kerr-McGee Worldwide Corporation (\"KWC\") owned 449,129 WES common units, (ii) Kerr-McGee Corporation (\"KMG\") owned 100% of KWC, and (iii) Anadarko owned 100% of KMG. Accordingly, KMG and Anadarko may be deemed to be indirect beneficial owners of any securities held by KWC."}],"balance_after":0,"derivative":{"underlying":"Common units representing limited partner interests","underlying_shares":14681388},"source":{"system":"sec-edgar","filing":"0000899243-19-005978","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924319005978/doc4.xml","form_type":"4"}},{"id":3621263,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Midstream Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units representing limited partner interests","published_at":"2019-03-04T20:54:23.000Z","date":"2019-02-28","kind":"disposition_to_issuer","acquired":false,"shares":218209719,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-19-005978","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924319005978/doc4.xml","form_type":"4"}},{"id":3621262,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Midstream Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units representing limited partner interests","published_at":"2019-03-04T20:54:23.000Z","date":"2019-02-28","kind":"grant","acquired":true,"shares":105624704,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."}],"balance_after":218209719,"source":{"system":"sec-edgar","filing":"0000899243-19-005978","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924319005978/doc4.xml","form_type":"4"}},{"id":3621261,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Midstream Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units representing limited partner interests","published_at":"2019-03-04T20:54:23.000Z","date":"2019-02-28","kind":"grant","acquired":true,"shares":45760201,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."}],"balance_after":112585015,"source":{"system":"sec-edgar","filing":"0000899243-19-005978","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924319005978/doc4.xml","form_type":"4"}},{"id":3621260,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Midstream Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units representing limited partner interests","published_at":"2019-03-04T20:54:23.000Z","date":"2019-02-28","kind":"grant","acquired":true,"shares":14681388,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On February 27, 2019, (i) Western Gas Equity Partners, LP (\"WGP\") owned 50,132,046 common units of Western Gas Partners, LP (\"WES\") and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC (\"WES GP\"), and APC Midstream Holdings, LLC (\"AMH\") owned 1,562,251 WES common units and 14,681,388 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owned (A) all of the membership interests of WGP GP, the general partner of WGP, (B) 77.8% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owned all of the issued and outstanding shares of common stock of WGR."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(Continued from Footnote 1) Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH. Also prior to the Effective Time, (i) Kerr-McGee Worldwide Corporation (\"KWC\") owned 449,129 WES common units, (ii) Kerr-McGee Corporation (\"KMG\") owned 100% of KWC, and (iii) Anadarko owned 100% of KMG. Accordingly, KMG and Anadarko may be deemed to be indirect beneficial owners of any securities held by KWC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On February 27, 2019, (i) Western Gas Equity Partners, LP (\"WGP\") owned 50,132,046 common units of Western Gas Partners, LP (\"WES\") and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC (\"WES GP\"), and APC Midstream Holdings, LLC (\"AMH\") owned 1,562,251 WES common units and 14,681,388 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owned (A) all of the membership interests of WGP GP, the general partner of WGP, (B) 77.8% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owned all of the issued and outstanding shares of common stock of WGR."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(Continued from Footnote 1) Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH. Also prior to the Effective Time, (i) Kerr-McGee Worldwide Corporation (\"KWC\") owned 449,129 WES common units, (ii) Kerr-McGee Corporation (\"KMG\") owned 100% of KWC, and (iii) Anadarko owned 100% of KMG. Accordingly, KMG and Anadarko may be deemed to be indirect beneficial owners of any securities held by KWC."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"On February 28, 2019 (the \"Effective Time\"), WES and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among WES, WES GP, WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES. Immediately prior to the Effective Time and as contemplated by the Merger Agreement, (i) affiliates of Anadarko contributed certain midstream assets to subsidiaries of WES in exchange for cash and 45,760,201 WES common units (the \"Contribution\"); (ii) all outstanding Class C Units were converted into WES common units on a one-for-one basis (the \"Class C Unit Conversion\"); and (iv) the incentive distribution rights (\"IDRs\") and 2,583,068 general partner units of WES held by WES GP were converted into 105,624,704 WES common units and a non-economic general partner interest in WES (the \"IDR Conversion\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Upon the Effective Time and as contemplated by the Merger Agreement, (i) 39,384,917 of the 45,760,201 WES common units received as part of the Contribution were converted into WGP common units at a ratio of 1.406 WGP common units for every on WES Common Unit, (ii) all 14,681,388 WES common units issued as part of the Class C Conversion, as well as all other WES common units held by AMH and KWC, were converted into WGP common units at a ratio of 1.525 WGP common units for every WES common unit, (iii) WES common units held by WGP, including the units issued in the IDR Conversion and the remaining units issued as part of the Contribution, continued outstanding as privately held limited partner interests in WES."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"(Continued from Footnote 4) Also following the Effective Time, (i) WES common units, which traded on the New York Stock Exchange (\"NYSE\") under the symbol \"WES\" through February 27, 2019, were delisted from the NYSE and ceased trading and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."}],"balance_after":66824814,"source":{"system":"sec-edgar","filing":"0000899243-19-005978","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924319005978/doc4.xml","form_type":"4"}},{"id":3621258,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":3,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":146653,"kind":"organization","name":"Anadarko E&P Onshore LLC","position":4,"cik":"0001570991","reported_name":"Anadarko E&P Onshore LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units representing limited partner interets","published_at":"2019-03-04T18:56:26.000Z","date":"2019-02-28","kind":"grant","acquired":true,"shares":80817456,"ownership":{"direct":false,"nature":"See foonotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On February 27, 2019, (i) Anadarko Petroleum Corporation (\"Anadarko\") directly or indirectly owned 170,380,045 common units, representing a 77.8% limited partner interest in Western Gas Equity Partners, LP (\"WGP\"), and 100% of the equity interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), which holds a 0% noneconomic general partner interest in WGP."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"On February 28, 2019 (the \"Effective Time\"), WGP and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among Western Gas Partners, LP (\"WES\"), Western Gas Holdings, LLC (\"WES GP\"), WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Upon the Effective Time and as contemplated by the Merger Agreement, certain affiliates of Anadarko, specifically, Anadarko E&P Onshore LLC, (\"AE&P\") APC Midstream Holdings, LLC (\"AMH\"), WGR Asset Holding Company LLC (a wholly owned subsidiary of AMH, \"WGRAH\") and Kerr-McGee Worldwide Corporation (\"KMW\"), received an aggregate of 80,817,456 WGP common units as follows: 17,221,725 WGP common units to AE&P, 24,771,550 WGP common units to AMH, 39,139,260 WGP common units to WGRAH and 684,922 WGP common units to KMW. Also following the Effective Time, (i) Western Gas Equity Partners, LP changed its name to Western Midstream Partners, LP and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On February 27, 2019, (i) Anadarko Petroleum Corporation (\"Anadarko\") directly or indirectly owned 170,380,045 common units, representing a 77.8% limited partner interest in Western Gas Equity Partners, LP (\"WGP\"), and 100% of the equity interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), which holds a 0% noneconomic general partner interest in WGP."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"On February 28, 2019 (the \"Effective Time\"), WGP and the other parties thereto consummated the transactions contemplated by the Contribution Agreement and Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of November 7, 2018, by and among Western Gas Partners, LP (\"WES\"), Western Gas Holdings, LLC (\"WES GP\"), WGP, WGP GP, Anadarko, Anadarko E&P Onshore LLC, Clarity Merger Sub, LLC and certain other affiliates of Anadarko and WES."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Upon the Effective Time and as contemplated by the Merger Agreement, certain affiliates of Anadarko, specifically, Anadarko E&P Onshore LLC, (\"AE&P\") APC Midstream Holdings, LLC (\"AMH\"), WGR Asset Holding Company LLC (a wholly owned subsidiary of AMH, \"WGRAH\") and Kerr-McGee Worldwide Corporation (\"KMW\"), received an aggregate of 80,817,456 WGP common units as follows: 17,221,725 WGP common units to AE&P, 24,771,550 WGP common units to AMH, 39,139,260 WGP common units to WGRAH and 684,922 WGP common units to KMW. Also following the Effective Time, (i) Western Gas Equity Partners, LP changed its name to Western Midstream Partners, LP and (ii) WGP common units, which previously traded on the NYSE under the symbol \"WGP\" through February 27, 2019, began trading under the symbol \"WES\" on the NYSE beginning on February 28, 2019."}],"balance_after":251197501,"source":{"system":"sec-edgar","filing":"0000899243-19-005887","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924319005887/doc4.xml","form_type":"4"}},{"id":3658908,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2019-02-14T09:25:49.000Z","date":"2019-02-13","kind":"other","acquired":true,"shares":308723,"price":45.62,"value":14083943.26,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of\nadditional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction\nrepresents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2018. Except as provided in that certain Contribution Agreement and Agreement and Plan of Merger, dated as of November\n7, 2018, by and among Anadarko Petroleum Corporation, Anadarko E&P Onshore LLC, Western Gas Equity Partners, LP, Western Gas Equity Holdings, LLC,"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"(Continued from Footnote 1) WES, Western Gas Holdings, LLC, Clarity Merger Sub, LLC, WGR Asset Holding Company LLC, WGR Operating, LP, Kerr-McGee Gathering LLC, Kerr-McGee Worldwide Corporation,\nAPC Midstream Holdings, LLC, and Delaware Basin Midstream, LLC, the Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH\nextends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of\nadditional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction\nrepresents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2018. Except as provided in that certain Contribution Agreement and Agreement and Plan of Merger, dated as of November\n7, 2018, by and among Anadarko Petroleum Corporation, Anadarko E&P Onshore LLC, Western Gas Equity Partners, LP, Western Gas Equity Holdings, LLC,"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"(Continued from Footnote 1) WES, Western Gas Holdings, LLC, Clarity Merger Sub, LLC, WGR Asset Holding Company LLC, WGR Operating, LP, Kerr-McGee Gathering LLC, Kerr-McGee Worldwide Corporation,\nAPC Midstream Holdings, LLC, and Delaware Basin Midstream, LLC, the Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH\nextends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of\nadditional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction\nrepresents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2018. Except as provided in that certain Contribution Agreement and Agreement and Plan of Merger, dated as of November\n7, 2018, by and among Anadarko Petroleum Corporation, Anadarko E&P Onshore LLC, Western Gas Equity Partners, LP, Western Gas Equity Holdings, LLC,"},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(Continued from Footnote 1) WES, Western Gas Holdings, LLC, Clarity Merger Sub, LLC, WGR Asset Holding Company LLC, WGR Operating, LP, Kerr-McGee Gathering LLC, Kerr-McGee Worldwide Corporation,\nAPC Midstream Holdings, LLC, and Delaware Basin Midstream, LLC, the Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH\nextends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"As of February 13, 2019, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units\nand 14,681,388 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 77.8% of the issued\nand outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation\n(\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR\nand Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH"}],"balance_after":14681388,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":308723},"source":{"system":"sec-edgar","filing":"0000899243-19-003542","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924319003542/doc4.xml","form_type":"4"}},{"id":3768812,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2018-11-13T17:00:33.000Z","date":"2018-11-13","kind":"other","acquired":true,"shares":327236,"price":41.42,"value":13554115.12,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2018. Except as provided in that certain  Contribution Agreement and Agreement and Plan of Merger, dated as of November 7, 2018, by and among Anadarko Petroleum Corporation, Anadarko E&P Onshore LLC, Western Gas Equity Partners, LP, Western Gas Equity Holdings, LLC,"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"(Continued from Footnote 1) WES, Western Gas Holdings, LLC, Clarity Merger Sub, LLC, WGR Asset Holding Company LLC, WGR Operating, LP, Kerr-McGee Gathering LLC, Kerr-McGee Worldwide Corporation, APC Midstream Holdings, LLC, and Delaware Basin Midstream, LLC, the Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2018. Except as provided in that certain  Contribution Agreement and Agreement and Plan of Merger, dated as of November 7, 2018, by and among Anadarko Petroleum Corporation, Anadarko E&P Onshore LLC, Western Gas Equity Partners, LP, Western Gas Equity Holdings, LLC,"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"(Continued from Footnote 1) WES, Western Gas Holdings, LLC, Clarity Merger Sub, LLC, WGR Asset Holding Company LLC, WGR Operating, LP, Kerr-McGee Gathering LLC, Kerr-McGee Worldwide Corporation, APC Midstream Holdings, LLC, and Delaware Basin Midstream, LLC, the Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2018. Except as provided in that certain  Contribution Agreement and Agreement and Plan of Merger, dated as of November 7, 2018, by and among Anadarko Petroleum Corporation, Anadarko E&P Onshore LLC, Western Gas Equity Partners, LP, Western Gas Equity Holdings, LLC,"},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"(Continued from Footnote 1) WES, Western Gas Holdings, LLC, Clarity Merger Sub, LLC, WGR Asset Holding Company LLC, WGR Operating, LP, Kerr-McGee Gathering LLC, Kerr-McGee Worldwide Corporation, APC Midstream Holdings, LLC, and Delaware Basin Midstream, LLC, the Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"As of November 13, 2018, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 14,372,665 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 77.8% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH"}],"balance_after":14372665,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":327236},"source":{"system":"sec-edgar","filing":"0000899243-18-028732","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924318028732/doc4.xml","form_type":"4"}},{"id":3846689,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2018-08-13T16:16:37.000Z","date":"2018-08-13","kind":"other","acquired":true,"shares":267164,"price":48.99,"value":13088364.36,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended June 30, 2018. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended June 30, 2018. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended June 30, 2018. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of August 13, 2018, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 14,045,429 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 78% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":14045429,"derivative":{"exercise_price":0,"underlying":"Common units\nrepresenting\nlimited partner\ninterests","underlying_shares":267164},"source":{"system":"sec-edgar","filing":"0000899243-18-022134","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924318022134/doc4.xml","form_type":"4"}},{"id":3902699,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Purchase Contract Obligation to Deliver Common Units","published_at":"2018-06-07T19:11:58.000Z","date":"2018-06-07","kind":"other","acquired":false,"shares":9200000,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"On June 7, 2018, Anadarko Petroleum Corporation (\"Anadarko\") transferred 8,207,320 common units of the Issuer to settle 9,200,000 tangible equity units issued by Anadarko in June 2015. An immaterial amount of common units of the Issuer is expected to be returned to Anadarko as a result of the settlement of TEUs with cash in lieu of fractional Issuer common units. Following settlement and without regard to TEUs settled in cash as referenced in the preceding sentence, Anadarko directly or indirectly owns 170,380,045 common units, representing a 77.8% limited partner interest in the Issuer, and 100% of the equity interests of Western Gas Equity Holdings, LLC, which holds a 0% noneconomic general partner interest in the Issuer."},{"field":"kind","element":"transactionCoding","label":"F1","text":"On June 7, 2018, Anadarko Petroleum Corporation (\"Anadarko\") transferred 8,207,320 common units of the Issuer to settle 9,200,000 tangible equity units issued by Anadarko in June 2015. An immaterial amount of common units of the Issuer is expected to be returned to Anadarko as a result of the settlement of TEUs with cash in lieu of fractional Issuer common units. Following settlement and without regard to TEUs settled in cash as referenced in the preceding sentence, Anadarko directly or indirectly owns 170,380,045 common units, representing a 77.8% limited partner interest in the Issuer, and 100% of the equity interests of Western Gas Equity Holdings, LLC, which holds a 0% noneconomic general partner interest in the Issuer."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On June 7, 2018, Anadarko Petroleum Corporation (\"Anadarko\") transferred 8,207,320 common units of the Issuer to settle 9,200,000 tangible equity units issued by Anadarko in June 2015. An immaterial amount of common units of the Issuer is expected to be returned to Anadarko as a result of the settlement of TEUs with cash in lieu of fractional Issuer common units. Following settlement and without regard to TEUs settled in cash as referenced in the preceding sentence, Anadarko directly or indirectly owns 170,380,045 common units, representing a 77.8% limited partner interest in the Issuer, and 100% of the equity interests of Western Gas Equity Holdings, LLC, which holds a 0% noneconomic general partner interest in the Issuer."}],"balance_after":0,"derivative":{"exercise_date":"2018-06-07","expiration_date":"2018-06-07","underlying":"Common Units","underlying_shares":8207320},"source":{"system":"sec-edgar","filing":"0000899243-18-015601","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924318015601/doc4.xml","form_type":"4"}},{"id":3902698,"issuer":{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Units representing limited partner interests","published_at":"2018-06-07T19:11:58.000Z","date":"2018-06-07","kind":"other","acquired":false,"shares":8207320,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On June 7, 2018, Anadarko Petroleum Corporation (\"Anadarko\") transferred 8,207,320 common units of the Issuer to settle 9,200,000 tangible equity units issued by Anadarko in June 2015. An immaterial amount of common units of the Issuer is expected to be returned to Anadarko as a result of the settlement of TEUs with cash in lieu of fractional Issuer common units. Following settlement and without regard to TEUs settled in cash as referenced in the preceding sentence, Anadarko directly or indirectly owns 170,380,045 common units, representing a 77.8% limited partner interest in the Issuer, and 100% of the equity interests of Western Gas Equity Holdings, LLC, which holds a 0% noneconomic general partner interest in the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On June 7, 2018, Anadarko Petroleum Corporation (\"Anadarko\") transferred 8,207,320 common units of the Issuer to settle 9,200,000 tangible equity units issued by Anadarko in June 2015. An immaterial amount of common units of the Issuer is expected to be returned to Anadarko as a result of the settlement of TEUs with cash in lieu of fractional Issuer common units. Following settlement and without regard to TEUs settled in cash as referenced in the preceding sentence, Anadarko directly or indirectly owns 170,380,045 common units, representing a 77.8% limited partner interest in the Issuer, and 100% of the equity interests of Western Gas Equity Holdings, LLC, which holds a 0% noneconomic general partner interest in the Issuer."}],"balance_after":170380045,"source":{"system":"sec-edgar","filing":"0000899243-18-015601","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924318015601/doc4.xml","form_type":"4"}},{"id":3933892,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2018-05-15T16:12:15.000Z","date":"2018-05-14","kind":"other","acquired":true,"shares":272988,"price":46.26,"value":12628424.88,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended March 31, 2018. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended March 31, 2018. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended March 31, 2018. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of May 14, 2018, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 13,778,265 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 78% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":13778265,"derivative":{"exercise_price":0,"underlying":"Common units\nrepresenting\nlimited partner\ninterests","underlying_shares":272988},"source":{"system":"sec-edgar","filing":"0000899243-18-012875","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924318012875/doc4.xml","form_type":"4"}},{"id":4064552,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2018-02-13T16:16:42.000Z","date":"2018-02-13","kind":"other","acquired":true,"shares":261394,"price":46.61,"value":12183574.34,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of February 13, 2018, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 13,505,277 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 78% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":13505277,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":261394},"source":{"system":"sec-edgar","filing":"0000899243-18-003676","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924318003676/doc4.xml","form_type":"4"}},{"id":4166722,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2017-11-13T17:09:49.000Z","date":"2017-11-13","kind":"other","acquired":true,"shares":266250,"price":46.93,"value":12495112.5,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of November 13, 2017, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 13,243,883 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 78% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":13243883,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":266250},"source":{"system":"sec-edgar","filing":"0000899243-17-026068","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924317026068/doc4.xml","form_type":"4"}},{"id":4235843,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2017-08-14T16:09:08.000Z","date":"2017-08-11","kind":"other","acquired":true,"shares":234315,"price":48.4,"value":11340846.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended June 30, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended June 30, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended June 30, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of August 11, 2017, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 12,977,633 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 78% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":12977633,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":234315},"source":{"system":"sec-edgar","filing":"0000899243-17-020233","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924317020233/doc4.xml","form_type":"4"}},{"id":4323978,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67628,"kind":"organization","name":"Kerr-McGee Worldwide Corp","position":5,"cik":"0001699285","reported_name":"Kerr-McGee Worldwide Corp","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2017-05-12T17:03:04.000Z","date":"2017-05-12","kind":"other","acquired":true,"shares":206218,"price":53.2,"value":10970797.6,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended March 31, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended March 31, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until March 2020 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended March 31, 2017. The Class C units will convert into common units on a one-for-one basis on March 1, 2020, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of May 12, 2017, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 12,743,318 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 78% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":12743318,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":206218},"source":{"system":"sec-edgar","filing":"0000899243-17-012999","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924317012999/doc4.xml","form_type":"4"}},{"id":4451954,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":178890,"kind":"organization","name":"ANADARKO MARCELLUS MIDSTREAM, L.L.C.","position":5,"cik":"0001571011","reported_name":"ANADARKO MARCELLUS MIDSTREAM, L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2017-02-14T16:05:14.000Z","date":"2017-02-13","kind":"other","acquired":true,"shares":178976,"price":59.38,"value":10627594.88,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until the end of 2017 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2016. The Class C units will convert into common units on a one-for-one basis on December 31, 2017, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until the end of 2017 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2016. The Class C units will convert into common units on a one-for-one basis on December 31, 2017, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until the end of 2017 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended December 31, 2016. The Class C units will convert into common units on a one-for-one basis on December 31, 2017, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of February 14, 2017, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 12,537,100 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 78% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":12537100,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":178976},"source":{"system":"sec-edgar","filing":"0000899243-17-003974","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924317003974/doc4.xml","form_type":"4"}},{"id":4561367,"issuer":{"id":159603,"kind":"organization","name":"Western Midstream Operating, LP","symbol":"NONE"},"owners":[{"id":67647,"kind":"organization","name":"ANADARKO PETROLEUM CORP","position":1,"cik":"0000773910","reported_name":"ANADARKO PETROLEUM CORP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67626,"kind":"organization","name":"WESTERN GAS RESOURCES INC","position":2,"cik":"0000856716","reported_name":"WESTERN GAS RESOURCES INC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":3258,"kind":"organization","name":"Western Midstream Partners, LP","position":3,"cik":"0001423902","reported_name":"Western Gas Equity Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":159661,"kind":"organization","name":"Western Gas Equity Holdings, LLC","position":4,"cik":"0001563544","reported_name":"Western Gas Equity Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":178890,"kind":"organization","name":"ANADARKO MARCELLUS MIDSTREAM, L.L.C.","position":5,"cik":"0001571011","reported_name":"ANADARKO MARCELLUS MIDSTREAM, L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":67627,"kind":"organization","name":"APC Midstream Holdings, LLC","position":6,"cik":"0001601306","reported_name":"APC Midstream Holdings, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class C units representing limited partner interests","published_at":"2016-11-10T16:30:43.000Z","date":"2016-11-10","kind":"other","acquired":true,"shares":197699,"price":51.98,"value":10276394.02,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until the end of 2017 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2016. The Class C units will convert into common units on a one-for-one basis on December 31, 2017, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until the end of 2017 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2016. The Class C units will convert into common units on a one-for-one basis on December 31, 2017, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"On November 25, 2014, Western Gas Partners, LP (\"WES\") issued 10,913,853 Class C units to APC Midstream Holdings, LLC (\"AMH\") at a price of $68.72 per unit. The Class C units receive distributions in the form of additional Class C units until the end of 2017 (unless earlier converted), and will be disregarded with respect to calculating the WES's cash distributions until they are converted to common units. The above transaction represents the quarterly distribution of Class C Units to AMH for the quarter ended September 30, 2016. The Class C units will convert into common units on a one-for-one basis on December 31, 2017, unless WES elects to convert such units earlier or AMH extends the conversion date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of November 10, 2016, (i) WGP owns 50,132,046 WES common units and 100% of the membership interests in WES's general partner, Western Gas Holdings, LLC, and AMH owns 1,562,251 WES common units and 12,358,124 Class C units, (ii) Western Gas Resources, Inc. (\"WGR\") owns (A) all of the membership interests of Western Gas Equity Holdings, LLC (\"WGP GP\"), the general partner of WGP, (B) 81.6% of the issued and outstanding limited partner interests in WGP, and (Z) 100% of the membership interests in AMH, (iii) WGP GP owns a 0% noneconomic general partner interest in WGP, and (iv) Anadarko Petroleum Corporation (\"Anadarko\") owns all of the issued and outstanding shares of common stock of WGR. Accordingly, WGP GP, WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by WGP, and WGR and Anadarko may be deemed to be indirect beneficial owners of any securities held by AMH."}],"balance_after":12358124,"derivative":{"exercise_price":0,"underlying":"Common units representing limited partner interests","underlying_shares":197699},"source":{"system":"sec-edgar","filing":"0000899243-16-033176","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/773910/000089924316033176/doc4.xml","form_type":"4"}}]}