{"transactions":[{"id":865859,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2026-03-03T19:23:39.000Z","date":"2026-03-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":797,"price":59.22,"value":47198.34,"ownership":{"direct":true},"balance_after":95337,"source":{"system":"sec-edgar","filing":"0001313785-26-000004","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000004/ownership.xml","form_type":"4"}},{"id":865858,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2026-03-03T19:23:39.000Z","date":"2026-03-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":1100,"price":59.22,"value":65142.0,"ownership":{"direct":true},"balance_after":96134,"source":{"system":"sec-edgar","filing":"0001313785-26-000004","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000004/ownership.xml","form_type":"4"}},{"id":865857,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2026-03-03T19:23:39.000Z","date":"2026-03-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":995,"price":59.22,"value":58923.9,"ownership":{"direct":true},"balance_after":97234,"source":{"system":"sec-edgar","filing":"0001313785-26-000004","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000004/ownership.xml","form_type":"4"}},{"id":865856,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2026-03-03T19:23:39.000Z","date":"2026-03-01","kind":"grant","planned":false,"acquired":true,"shares":5986,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":98229,"source":{"system":"sec-edgar","filing":"0001313785-26-000004","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000004/ownership.xml","form_type":"4"}},{"id":865855,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2026-03-03T18:52:55.000Z","date":"2026-03-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":278,"price":206.3,"value":57351.4,"ownership":{"direct":true},"balance_after":31031,"source":{"system":"sec-edgar","filing":"0001313785-26-000003","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000003/ownership.xml","form_type":"4"}},{"id":865854,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2026-03-03T18:52:55.000Z","date":"2026-03-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":251,"price":206.3,"value":51781.3,"ownership":{"direct":true},"balance_after":31309,"source":{"system":"sec-edgar","filing":"0001313785-26-000003","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000003/ownership.xml","form_type":"4"}},{"id":865853,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2026-03-03T18:52:55.000Z","date":"2026-03-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":278,"price":206.3,"value":57351.4,"ownership":{"direct":true},"balance_after":31560,"source":{"system":"sec-edgar","filing":"0001313785-26-000003","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000003/ownership.xml","form_type":"4"}},{"id":865852,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2026-03-03T18:52:55.000Z","date":"2026-03-01","kind":"grant","planned":false,"acquired":true,"shares":1730,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":31838,"source":{"system":"sec-edgar","filing":"0001313785-26-000003","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000131378526000003/ownership.xml","form_type":"4"}},{"id":967226,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2025-12-16T15:25:59.000Z","date":"2025-12-12","kind":"tax_withholding","planned":false,"acquired":false,"shares":242,"price":54.85,"value":13273.7,"ownership":{"direct":true},"balance_after":92243,"source":{"system":"sec-edgar","filing":"0001193125-25-320742","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000119312525320742/ownership.xml","form_type":"4"}},{"id":967222,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2025-12-16T15:09:00.000Z","date":"2025-12-12","kind":"tax_withholding","planned":false,"acquired":false,"shares":85,"price":185.77,"value":15790.45,"ownership":{"direct":true},"balance_after":30108,"source":{"system":"sec-edgar","filing":"0001193125-25-320702","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000119312525320702/ownership.xml","form_type":"4"}},{"id":1227233,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2025-03-04T19:31:54.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":251,"price":148.65,"value":37311.15,"ownership":{"direct":true},"balance_after":30193,"source":{"system":"sec-edgar","filing":"0000950170-25-032722","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032722/ownership.xml","form_type":"4"}},{"id":1227232,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2025-03-04T19:31:54.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":278,"price":148.65,"value":41324.7,"ownership":{"direct":true},"balance_after":30444,"source":{"system":"sec-edgar","filing":"0000950170-25-032722","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032722/ownership.xml","form_type":"4"}},{"id":1227231,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2025-03-04T19:31:54.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":445,"price":148.65,"value":66149.25,"ownership":{"direct":true},"balance_after":30722,"source":{"system":"sec-edgar","filing":"0000950170-25-032722","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032722/ownership.xml","form_type":"4"}},{"id":1227230,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2025-03-04T19:31:54.000Z","date":"2025-03-01","kind":"grant","planned":false,"acquired":true,"shares":2098,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":31167,"source":{"system":"sec-edgar","filing":"0000950170-25-032722","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032722/ownership.xml","form_type":"4"}},{"id":1227229,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2025-03-04T18:50:05.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":1100,"price":54.34,"value":59774.0,"ownership":{"direct":true},"balance_after":92485,"source":{"system":"sec-edgar","filing":"0000950170-25-032654","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032654/ownership.xml","form_type":"4"}},{"id":1227228,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2025-03-04T18:50:05.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":995,"price":54.34,"value":54068.3,"ownership":{"direct":true},"balance_after":93585,"source":{"system":"sec-edgar","filing":"0000950170-25-032654","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032654/ownership.xml","form_type":"4"}},{"id":1227227,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2025-03-04T18:50:05.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":1054,"price":54.34,"value":57274.36,"ownership":{"direct":true},"balance_after":94580,"source":{"system":"sec-edgar","filing":"0000950170-25-032654","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032654/ownership.xml","form_type":"4"}},{"id":1227226,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2025-03-04T18:50:05.000Z","date":"2025-03-01","kind":"grant","planned":false,"acquired":true,"shares":6014,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":95634,"source":{"system":"sec-edgar","filing":"0000950170-25-032654","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017025032654/ownership.xml","form_type":"4"}},{"id":1328286,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2024-12-17T16:48:08.000Z","date":"2024-12-13","kind":"tax_withholding","planned":false,"acquired":false,"shares":333,"price":48.86,"value":16270.38,"ownership":{"direct":true},"balance_after":89620,"source":{"system":"sec-edgar","filing":"0000950170-24-137291","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024137291/ownership.xml","form_type":"4"}},{"id":1328285,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2024-12-17T15:56:18.000Z","date":"2024-12-13","kind":"tax_withholding","planned":false,"acquired":false,"shares":77,"price":145.56,"value":11208.12,"ownership":{"direct":true},"balance_after":29069,"source":{"system":"sec-edgar","filing":"0000950170-24-137158","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024137158/ownership.xml","form_type":"4"}},{"id":1594901,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2024-03-05T15:09:44.000Z","date":"2024-03-01","kind":"grant","planned":false,"acquired":true,"shares":1896,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":29146,"source":{"system":"sec-edgar","filing":"0000950170-24-025768","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025768/ownership.xml","form_type":"4"}},{"id":1594900,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2024-03-05T15:09:44.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":278,"price":172.34,"value":47910.52,"ownership":{"direct":true},"balance_after":27250,"source":{"system":"sec-edgar","filing":"0000950170-24-025768","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025768/ownership.xml","form_type":"4"}},{"id":1594899,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2024-03-05T15:09:44.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":445,"price":172.34,"value":76691.3,"ownership":{"direct":true},"balance_after":27528,"source":{"system":"sec-edgar","filing":"0000950170-24-025768","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025768/ownership.xml","form_type":"4"}},{"id":1594898,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2024-03-05T15:09:44.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":575,"price":172.34,"value":99095.5,"ownership":{"direct":true},"balance_after":27973,"source":{"system":"sec-edgar","filing":"0000950170-24-025768","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025768/ownership.xml","form_type":"4"}},{"id":1594897,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2024-03-05T07:34:20.000Z","date":"2024-03-01","kind":"grant","planned":false,"acquired":true,"shares":8303,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":89953,"source":{"system":"sec-edgar","filing":"0000950170-24-025401","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025401/ownership.xml","form_type":"4"}},{"id":1594896,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2024-03-05T07:34:20.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":995,"price":38.87,"value":38675.65,"ownership":{"direct":true},"balance_after":81650,"source":{"system":"sec-edgar","filing":"0000950170-24-025401","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025401/ownership.xml","form_type":"4"}},{"id":1594895,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2024-03-05T07:34:20.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1054,"price":38.87,"value":40968.98,"ownership":{"direct":true},"balance_after":82645,"source":{"system":"sec-edgar","filing":"0000950170-24-025401","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025401/ownership.xml","form_type":"4"}},{"id":1594894,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2024-03-05T07:34:20.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1207,"price":38.87,"value":46916.09,"ownership":{"direct":true},"balance_after":83699,"source":{"system":"sec-edgar","filing":"0000950170-24-025401","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017024025401/ownership.xml","form_type":"4"}},{"id":1721286,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2023-12-05T07:05:37.000Z","date":"2023-12-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":301,"price":36.61,"value":11019.61,"ownership":{"direct":true},"balance_after":84906,"source":{"system":"sec-edgar","filing":"0000950170-23-067935","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017023067935/ownership.xml","form_type":"4"}},{"id":1721285,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-12-05T06:43:38.000Z","date":"2023-12-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":85,"price":151.42,"value":12870.7,"ownership":{"direct":true},"balance_after":28548,"source":{"system":"sec-edgar","filing":"0000950170-23-067928","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000095017023067928/ownership.xml","form_type":"4"}},{"id":1808355,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Employee Stock Option (right to buy)","published_at":"2023-08-14T14:58:44.000Z","date":"2023-08-10","kind":"exercise","planned":false,"acquired":false,"shares":8189,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This option, in the amount of 24,565, is exercisable as follows: 8,188 shares on March 1, 2021, 8,188 shares on March 1, 2022 and 8,189 shares on March 1, 2023."}],"balance_after":0,"derivative":{"exercise_price":47.73,"exercise_date":"2021-03-01","expiration_date":"2030-03-01","underlying":"Common Stock","underlying_shares":8189},"source":{"system":"sec-edgar","filing":"0001209191-23-045573","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123045573/doc4.xml","form_type":"4"}},{"id":1808354,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-08-14T14:58:44.000Z","date":"2023-08-10","kind":"sale","planned":false,"acquired":false,"shares":8189,"price":145.801,"value":1193964.389,"ownership":{"direct":true},"balance_after":28633,"source":{"system":"sec-edgar","filing":"0001209191-23-045573","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123045573/doc4.xml","form_type":"4"}},{"id":1808353,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-08-14T14:58:44.000Z","date":"2023-08-10","kind":"exercise","planned":false,"acquired":true,"shares":8189,"price":47.73,"value":390860.97,"ownership":{"direct":true},"balance_after":36822,"source":{"system":"sec-edgar","filing":"0001209191-23-045573","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123045573/doc4.xml","form_type":"4"}},{"id":1972407,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2023-03-03T15:26:58.000Z","date":"2023-03-01","kind":"grant","acquired":true,"shares":7504,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":85207,"source":{"system":"sec-edgar","filing":"0001209191-23-015331","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015331/doc4.xml","form_type":"4"}},{"id":1972406,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2023-03-03T15:26:58.000Z","date":"2023-03-01","kind":"tax_withholding","acquired":false,"shares":1053,"price":34.54,"value":36370.62,"ownership":{"direct":true},"balance_after":77703,"source":{"system":"sec-edgar","filing":"0001209191-23-015331","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015331/doc4.xml","form_type":"4"}},{"id":1972405,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2023-03-03T15:26:58.000Z","date":"2023-03-01","kind":"tax_withholding","acquired":false,"shares":1207,"price":34.54,"value":41689.78,"ownership":{"direct":true},"balance_after":78756,"source":{"system":"sec-edgar","filing":"0001209191-23-015331","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015331/doc4.xml","form_type":"4"}},{"id":1972404,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2023-03-03T15:26:58.000Z","date":"2023-03-01","kind":"tax_withholding","acquired":false,"shares":727,"price":34.54,"value":25110.58,"ownership":{"direct":true},"balance_after":79963,"source":{"system":"sec-edgar","filing":"0001209191-23-015331","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015331/doc4.xml","form_type":"4"}},{"id":1972403,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-03-03T15:11:52.000Z","date":"2023-03-01","kind":"grant","acquired":true,"shares":2096,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":28633,"source":{"system":"sec-edgar","filing":"0001209191-23-015307","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015307/doc4.xml","form_type":"4"}},{"id":1972402,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-03-03T15:11:52.000Z","date":"2023-03-01","kind":"tax_withholding","acquired":false,"shares":284,"price":126.52,"value":35931.68,"ownership":{"direct":true},"balance_after":26537,"source":{"system":"sec-edgar","filing":"0001209191-23-015307","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015307/doc4.xml","form_type":"4"}},{"id":1972401,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-03-03T15:11:52.000Z","date":"2023-03-01","kind":"tax_withholding","acquired":false,"shares":575,"price":126.52,"value":72749.0,"ownership":{"direct":true},"balance_after":26821,"source":{"system":"sec-edgar","filing":"0001209191-23-015307","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015307/doc4.xml","form_type":"4"}},{"id":1972400,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-03-03T15:11:52.000Z","date":"2023-03-01","kind":"tax_withholding","acquired":false,"shares":436,"price":126.52,"value":55162.72,"ownership":{"direct":true},"balance_after":27396,"source":{"system":"sec-edgar","filing":"0001209191-23-015307","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123015307/doc4.xml","form_type":"4"}},{"id":2041971,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2023-01-30T12:11:37.000Z","date":"2023-01-26","kind":"grant","acquired":true,"shares":842,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":27832,"source":{"system":"sec-edgar","filing":"0001209191-23-005409","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123005409/doc4.xml","form_type":"4"}},{"id":2043559,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2023-01-27T07:02:13.000Z","date":"2023-01-25","kind":"grant","acquired":true,"shares":798,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":80690,"source":{"system":"sec-edgar","filing":"0001209191-23-005148","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919123005148/doc4.xml","form_type":"4"}},{"id":2094253,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-12-06T06:37:41.000Z","date":"2022-12-02","kind":"tax_withholding","acquired":false,"shares":320,"price":33.82,"value":10822.4,"ownership":{"direct":true},"balance_after":79892,"source":{"system":"sec-edgar","filing":"0001209191-22-059926","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122059926/doc4.xml","form_type":"4"}},{"id":2094251,"issuer":{"id":2903,"kind":"organization","name":"Marathon Petroleum Corp"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Ex VP & COO, MPLX GP LLC"}}],"security":"Common Stock","published_at":"2022-12-06T06:26:51.000Z","date":"2022-12-02","kind":"tax_withholding","acquired":false,"shares":135,"price":118.23,"value":15961.05,"ownership":{"direct":true},"balance_after":26990,"source":{"system":"sec-edgar","filing":"0001209191-22-059918","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122059918/doc4.xml","form_type":"4"}},{"id":2292588,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-04-21T15:33:52.000Z","date":"2022-04-19","kind":"sale","acquired":false,"shares":2500,"price":35,"value":87500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 24, 2021."}],"balance_after":80212,"source":{"system":"sec-edgar","filing":"0001209191-22-025154","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122025154/doc4.xml","form_type":"4"}},{"id":2353414,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-03-03T16:54:45.000Z","date":"2022-03-01","kind":"grant","acquired":true,"shares":7952,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":82712,"source":{"system":"sec-edgar","filing":"0001209191-22-015561","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122015561/doc4.xml","form_type":"4"}},{"id":2353413,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-03-03T16:54:45.000Z","date":"2022-03-01","kind":"tax_withholding","acquired":false,"shares":1089,"price":32.63,"value":35534.07,"ownership":{"direct":true},"balance_after":74760,"source":{"system":"sec-edgar","filing":"0001209191-22-015561","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122015561/doc4.xml","form_type":"4"}},{"id":2353412,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-03-03T16:54:45.000Z","date":"2022-03-01","kind":"tax_withholding","acquired":false,"shares":730,"price":32.63,"value":23819.9,"ownership":{"direct":true},"balance_after":75849,"source":{"system":"sec-edgar","filing":"0001209191-22-015561","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122015561/doc4.xml","form_type":"4"}},{"id":2353411,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-03-03T16:54:45.000Z","date":"2022-03-01","kind":"tax_withholding","acquired":false,"shares":257,"price":32.63,"value":8385.91,"ownership":{"direct":true},"balance_after":76579,"source":{"system":"sec-edgar","filing":"0001209191-22-015561","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122015561/doc4.xml","form_type":"4"}},{"id":2406096,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-02-09T12:33:07.000Z","date":"2022-02-07","kind":"sale","acquired":false,"shares":2500,"price":33.2,"value":83000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 24, 2021."}],"balance_after":76836,"source":{"system":"sec-edgar","filing":"0001209191-22-007976","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122007976/doc4.xml","form_type":"4"}},{"id":2423863,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2022-01-27T16:08:04.000Z","date":"2022-01-25","kind":"grant","acquired":true,"shares":780,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":79336,"source":{"system":"sec-edgar","filing":"0001209191-22-005185","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919122005185/doc4.xml","form_type":"4"}},{"id":2497424,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-11-23T14:07:14.000Z","date":"2021-11-19","kind":"tax_withholding","acquired":false,"shares":367,"price":29.68,"value":10892.56,"ownership":{"direct":true},"balance_after":78556,"source":{"system":"sec-edgar","filing":"0001209191-21-066341","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121066341/doc4.xml","form_type":"4"}},{"id":2517540,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-11-10T07:01:08.000Z","date":"2021-11-08","kind":"sale","acquired":false,"shares":2500,"price":31.2534,"value":78133.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 24, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These units were sold in multiple transactions at prices ranging from $31.25 to $31.38, inclusive. The Reporting Person undertakes to provide to MPLX LP, any security holder of MPLX LP, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of units sold at each separate price within the range set forth in footnote (3) to this Form 4."}],"balance_after":78923,"source":{"system":"sec-edgar","filing":"0001209191-21-063794","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121063794/doc4.xml","form_type":"4"}},{"id":2517539,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-11-10T07:01:08.000Z","date":"2021-11-08","kind":"sale","acquired":false,"shares":2500,"price":31.2735,"value":78183.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 24, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These units were sold in multiple transactions at prices ranging from $31.27 to $31.40, inclusive. The Reporting Person undertakes to provide to MPLX LP, any security holder of MPLX LP, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of units sold at each separate price within the range set forth in footnote (2) to this Form 4."}],"balance_after":81423,"source":{"system":"sec-edgar","filing":"0001209191-21-063794","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121063794/doc4.xml","form_type":"4"}},{"id":2720630,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-05-10T06:58:04.000Z","date":"2021-05-06","kind":"sale","acquired":false,"shares":2500,"price":27,"value":67500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 10,2020."}],"balance_after":83923,"source":{"system":"sec-edgar","filing":"0001209191-21-031113","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121031113/doc4.xml","form_type":"4"}},{"id":2812150,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-03-03T19:28:30.000Z","date":"2021-03-01","kind":"grant","acquired":true,"shares":9110,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":86423,"source":{"system":"sec-edgar","filing":"0001209191-21-017352","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121017352/doc4.xml","form_type":"4"}},{"id":2812149,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-03-03T19:28:30.000Z","date":"2021-03-01","kind":"tax_withholding","acquired":false,"shares":481,"price":24.59,"value":11827.79,"ownership":{"direct":true},"balance_after":77313,"source":{"system":"sec-edgar","filing":"0001209191-21-017352","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121017352/doc4.xml","form_type":"4"}},{"id":2812148,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-03-03T19:28:30.000Z","date":"2021-03-01","kind":"tax_withholding","acquired":false,"shares":256,"price":24.59,"value":6295.04,"ownership":{"direct":true},"balance_after":77794,"source":{"system":"sec-edgar","filing":"0001209191-21-017352","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121017352/doc4.xml","form_type":"4"}},{"id":2812147,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec. VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-03-03T19:28:30.000Z","date":"2021-03-01","kind":"tax_withholding","acquired":false,"shares":609,"price":24.59,"value":14975.31,"ownership":{"direct":true},"balance_after":78050,"source":{"system":"sec-edgar","filing":"0001209191-21-017352","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121017352/doc4.xml","form_type":"4"}},{"id":2888366,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Exec. VP"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-02-01T17:16:52.000Z","date":"2021-01-28","kind":"grant","acquired":true,"shares":2254,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":78659,"source":{"system":"sec-edgar","filing":"0001209191-21-006528","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121006528/doc4.xml","form_type":"4"}},{"id":2905663,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Exec. VP"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2021-01-15T15:10:53.000Z","date":"2021-01-13","kind":"sale","acquired":false,"shares":2500,"price":25,"value":62500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 10, 2020."}],"balance_after":76405,"source":{"system":"sec-edgar","filing":"0001209191-21-003738","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919121003738/doc4.xml","form_type":"4"}},{"id":2928597,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Exec. VP"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-12-30T10:24:27.000Z","date":"2020-12-28","kind":"tax_withholding","acquired":false,"shares":81,"price":21.5,"value":1741.5,"ownership":{"direct":true},"balance_after":78905,"source":{"system":"sec-edgar","filing":"0001209191-20-065447","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120065447/doc4.xml","form_type":"4"}},{"id":2928596,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Exec. VP"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-12-30T10:24:27.000Z","date":"2020-12-28","kind":"tax_withholding","acquired":false,"shares":97,"price":21.5,"value":2085.5,"ownership":{"direct":true},"balance_after":78986,"source":{"system":"sec-edgar","filing":"0001209191-20-065447","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120065447/doc4.xml","form_type":"4"}},{"id":2953148,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Exec. VP"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-12-08T16:08:06.000Z","date":"2020-12-04","kind":"sale","acquired":false,"shares":2500,"price":23,"value":57500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 10, 2020."}],"balance_after":79083,"source":{"system":"sec-edgar","filing":"0001209191-20-062238","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120062238/doc4.xml","form_type":"4"}},{"id":2970990,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Exec. VP"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-11-20T07:07:04.000Z","date":"2020-11-18","kind":"sale","acquired":false,"shares":2500,"price":21,"value":52500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 10, 2020."}],"balance_after":81583,"source":{"system":"sec-edgar","filing":"0001209191-20-059574","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120059574/doc4.xml","form_type":"4"}},{"id":3226871,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-03-04T17:08:46.000Z","date":"2020-03-02","kind":"grant","acquired":true,"shares":4983,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":84083,"source":{"system":"sec-edgar","filing":"0001209191-20-016242","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120016242/doc4.xml","form_type":"4"}},{"id":3226870,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-03-04T17:08:46.000Z","date":"2020-03-02","kind":"tax_withholding","acquired":false,"shares":442,"price":20.08,"value":8875.36,"ownership":{"direct":true},"balance_after":79100,"source":{"system":"sec-edgar","filing":"0001209191-20-016242","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120016242/doc4.xml","form_type":"4"}},{"id":3226869,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-03-04T17:08:46.000Z","date":"2020-03-02","kind":"tax_withholding","acquired":false,"shares":1051,"price":20.08,"value":21104.08,"ownership":{"direct":true},"balance_after":79542,"source":{"system":"sec-edgar","filing":"0001209191-20-016242","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120016242/doc4.xml","form_type":"4"}},{"id":3226868,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-03-04T17:08:46.000Z","date":"2020-03-02","kind":"tax_withholding","acquired":false,"shares":1235,"price":20.08,"value":24798.8,"ownership":{"direct":true},"balance_after":80593,"source":{"system":"sec-edgar","filing":"0001209191-20-016242","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120016242/doc4.xml","form_type":"4"}},{"id":3299988,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2020-01-28T15:33:38.000Z","date":"2020-01-24","kind":"grant","acquired":true,"shares":3090,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":81828,"source":{"system":"sec-edgar","filing":"0001209191-20-005120","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919120005120/doc4.xml","form_type":"4"}},{"id":3611175,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2019-03-05T16:36:35.000Z","date":"2019-03-01","kind":"grant","acquired":true,"shares":3014,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":78738,"source":{"system":"sec-edgar","filing":"0001209191-19-016543","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919119016543/doc4.xml","form_type":"4"}},{"id":3611174,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2019-03-05T16:36:35.000Z","date":"2019-03-01","kind":"tax_withholding","acquired":false,"shares":693,"price":33.24,"value":23035.32,"ownership":{"direct":true},"balance_after":75724,"source":{"system":"sec-edgar","filing":"0001209191-19-016543","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919119016543/doc4.xml","form_type":"4"}},{"id":3611173,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2019-03-05T16:36:35.000Z","date":"2019-03-01","kind":"tax_withholding","acquired":false,"shares":800,"price":33.24,"value":26592.0,"ownership":{"direct":true},"balance_after":76417,"source":{"system":"sec-edgar","filing":"0001209191-19-016543","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919119016543/doc4.xml","form_type":"4"}},{"id":3723168,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2018-12-20T11:44:42.000Z","date":"2018-12-18","kind":"tax_withholding","acquired":false,"shares":3884,"price":32.48,"value":126152.32,"ownership":{"direct":true},"balance_after":77217,"source":{"system":"sec-edgar","filing":"0001209191-18-063625","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919118063625/doc4.xml","form_type":"4"}},{"id":4014218,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2018-03-05T14:08:57.000Z","date":"2018-03-01","kind":"grant","acquired":true,"shares":7166,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":81101,"source":{"system":"sec-edgar","filing":"0001209191-18-016222","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919118016222/doc4.xml","form_type":"4"}},{"id":4014217,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP, Gathering & Proc"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2018-03-05T14:08:57.000Z","date":"2018-03-01","kind":"tax_withholding","acquired":false,"shares":839,"price":34.66,"value":29079.74,"ownership":{"direct":true},"balance_after":73935,"source":{"system":"sec-edgar","filing":"0001209191-18-016222","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919118016222/doc4.xml","form_type":"4"}},{"id":4124794,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP MarkWest Opr"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-12-20T09:02:09.000Z","date":"2017-12-18","kind":"tax_withholding","acquired":false,"shares":2824,"price":36.34,"value":102624.16,"ownership":{"direct":true},"balance_after":74774,"source":{"system":"sec-edgar","filing":"0001209191-17-066579","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117066579/doc4.xml","form_type":"4"}},{"id":4133044,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP MarkWest Opr"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-12-13T13:36:56.000Z","date":"2017-12-11","kind":"sale","acquired":false,"shares":2000,"price":37,"value":74000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2017."}],"balance_after":77598,"source":{"system":"sec-edgar","filing":"0001209191-17-065378","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117065378/doc4.xml","form_type":"4"}},{"id":4144009,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP MarkWest Opr"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-12-04T08:46:58.000Z","date":"2017-11-30","kind":"sale","acquired":false,"shares":2000,"price":36,"value":72000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2017."}],"balance_after":79598,"source":{"system":"sec-edgar","filing":"0001209191-17-063358","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117063358/doc4.xml","form_type":"4"}},{"id":4152339,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP MarkWest Opr"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-11-22T08:57:30.000Z","date":"2017-11-20","kind":"sale","acquired":false,"shares":2000,"price":35,"value":70000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2017."}],"balance_after":81598,"source":{"system":"sec-edgar","filing":"0001209191-17-062249","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117062249/doc4.xml","form_type":"4"}},{"id":4152338,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP MarkWest Opr"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-11-22T08:57:30.000Z","date":"2017-11-20","kind":"sale","acquired":false,"shares":2000,"price":34.38,"value":68760.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2017."}],"balance_after":83598,"source":{"system":"sec-edgar","filing":"0001209191-17-062249","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117062249/doc4.xml","form_type":"4"}},{"id":4402932,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-03-03T15:25:34.000Z","date":"2017-03-01","kind":"grant","acquired":true,"shares":8417,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":85598,"source":{"system":"sec-edgar","filing":"0001209191-17-017300","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117017300/doc4.xml","form_type":"4"}},{"id":4480390,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-01-26T09:43:39.000Z","date":"2017-01-24","kind":"sale","acquired":false,"shares":1000,"price":37,"value":37000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 8, 2016."}],"balance_after":77181,"source":{"system":"sec-edgar","filing":"0001209191-17-005649","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117005649/doc4.xml","form_type":"4"}},{"id":4497927,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-01-05T16:15:27.000Z","date":"2017-01-04","kind":"sale","acquired":false,"shares":1000,"price":36,"value":36000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 8, 2016."}],"balance_after":78181,"source":{"system":"sec-edgar","filing":"0001209191-17-002022","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117002022/doc4.xml","form_type":"4"}},{"id":4501908,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2017-01-04T10:14:23.000Z","date":"2017-01-03","kind":"sale","acquired":false,"shares":1000,"price":35,"value":35000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 8, 2016."}],"balance_after":79181,"source":{"system":"sec-edgar","filing":"0001209191-17-000552","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919117000552/doc4.xml","form_type":"4"}},{"id":4514037,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2016-12-21T15:23:15.000Z","date":"2016-12-19","kind":"tax_withholding","acquired":false,"shares":2826,"price":32.23,"value":91081.98,"ownership":{"direct":true},"balance_after":80181,"source":{"system":"sec-edgar","filing":"0001209191-16-156298","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919116156298/doc4.xml","form_type":"4"}},{"id":4580022,"issuer":{"id":3003,"kind":"organization","name":"MPLX LP"},"owners":[{"id":63199,"kind":"person","name":"Floerke Gregory Scott","position":1,"cik":"0001313785","reported_name":"Floerke Gregory Scott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Exec VP and COO"}}],"security":"Common Units (Limited Partner Interests)","published_at":"2016-10-13T14:38:49.000Z","date":"2016-10-12","kind":"sale","acquired":false,"shares":1000,"price":31,"value":31000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 8, 2016."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount originally reported in this row reflected units issued on December 4, 2015 in the context of the merger of Sapphire Holdco LLC, a wholly owned subsidiary of the Issuer, with and into MarkWest Energy Partners, L.P. on December 4, 2015 and reflected an under-reporting of 22 units.  The amount currently reflected in this row corrects such number of units."}],"balance_after":83007,"source":{"system":"sec-edgar","filing":"0001209191-16-145781","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1313785/000120919116145781/doc4.xml","form_type":"4"}}]}