{"schema_version":"secwatch.filing_event.v1","accession":"0001552000-21-000048","form_type":"8-K","ticker":"MPLX","cik":"0001552000","company_name":"MPLX LP","filed_at":"2021-12-03T23:59:59+00:00","discovered_at":"2026-05-14T18:04:12.996416+00:00","generated_at":"2026-06-28T03:49:49.795644+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"MPLX board accepts resignations of two directors, appoints CFO Quaid","bullets":["Directors Donald C. Templin and Pamela K.M. Beall resigned effective Dec 31, 2021, following retirement from Marathon Group.","John J. Quaid (EVP & CFO of General Partner) appointed to board effective Jan 1, 2022; board size fixed at nine.","Mr. Quaid will not receive compensation for board service; no related arrangements or transactions.","Resignations consistent with Governance Principles requiring Management Directors to resign upon employment termination."],"urls":{"canonical":"https://secwatch.observer/filing/0001552000-21-000048","json":"https://secwatch.observer/filing/0001552000-21-000048.json","markdown":"https://secwatch.observer/filing/0001552000-21-000048.md","text":"https://secwatch.observer/filing/0001552000-21-000048.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1552000/000155200021000048/0001552000-21-000048-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1552000/000155200021000048/mplx-20211129.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T03:49:49.795644+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"13638b9dc2","claim":"Pamela K.M. Beall resigned as member of the Board at MPLX LP.","evidence_excerpt":"the Board determined to accept resignations from Donald C. Templin and Pamela K.M. Beall, each a Management Director who retired from the Marathon Group during 2021.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1552000/000155200021000048/0001552000-21-000048-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"member of the Board"}],"fact_type":"executive_change"},{"claim_id":"5732819368","claim":"Donald C. Templin resigned as member of the Board at MPLX LP.","evidence_excerpt":"the Board determined to accept resignations from Donald C. Templin and Pamela K.M. Beall, each a Management Director who retired from the Marathon Group during 2021.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1552000/000155200021000048/0001552000-21-000048-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"member of the Board"}],"fact_type":"executive_change"},{"claim_id":"807bf32e8c","claim":"John J. Quaid was appointed as member of the Board at MPLX LP.","evidence_excerpt":"appointed John J. Quaid to serve as a member of the Board, effective January 1, 2022","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1552000/000155200021000048/0001552000-21-000048-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"member of the Board"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}