{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-048352","form_type":"8-K","ticker":"MPLX","cik":"0001552000","company_name":"MPLX LP","filed_at":"2026-02-12T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.406655+00:00","generated_at":"2026-05-16T03:01:04.519535+00:00","sec_items":["8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"low","headline":"MPLX LP files debt issuance documents; key terms undisclosed","bullets":["Underwriting agreement dated Feb 5, 2026 with Citigroup, Barclays, MUFG, RBC as representatives.","Thirty-Sixth and Thirty-Seventh Supplemental Indentures dated Feb 12, 2026 with BNY Mellon as trustee.","Principal amount, interest rate, and maturity not disclosed in the 8-K filing."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-048352","json":"https://secwatch.observer/filing/0001193125-26-048352.json","markdown":"https://secwatch.observer/filing/0001193125-26-048352.md","text":"https://secwatch.observer/filing/0001193125-26-048352.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1552000/000119312526048352/0001193125-26-048352-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1552000/000119312526048352/d81435d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T03:01:04.519535+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}