{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-24-142562","form_type":"8-K","ticker":"MPLX","cik":"0001552000","company_name":"MPLX LP","filed_at":"2024-05-20T23:59:59+00:00","discovered_at":"2026-05-14T18:03:18.929655+00:00","generated_at":"2026-06-01T12:39:10.454104+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 underwriting agreement and supplemental indenture for debt offering; terms not disclosed in filing","bullets":["Underwriting Agreement dated May 15, 2024 with Mizuho, RBC, TD Securities as representatives.","Twenty-Ninth Supplemental Indenture dated May 20, 2024 with Bank of New York Mellon as Trustee.","Jones Day opinion filed along with the documents as exhibits to existing S-3 registration.","No principal amount, interest rate, maturity, or use of proceeds provided in the 8-K text."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-142562","json":"https://secwatch.observer/filing/0001193125-24-142562.json","markdown":"https://secwatch.observer/filing/0001193125-24-142562.md","text":"https://secwatch.observer/filing/0001193125-24-142562.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1552000/000119312524142562/0001193125-24-142562-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1552000/000119312524142562/d839755d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-01T12:39:10.454104+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"}