{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-25-055388","form_type":"8-K","ticker":"MRK","cik":"0000310158","company_name":"Merck & Co., Inc.","filed_at":"2025-12-04T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.672609+00:00","generated_at":"2026-05-16T14:57:48.464512+00:00","sec_items":["8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Merck closes $8.0B multi-tranche debt offering across eight series","bullets":["Total $8.0B includes Floating Rate Notes due 2029 ($500M), 3.850% Notes due 2029 ($750M), 4.150% due 2031 ($1B), 4.450% due 2032 ($1B).","Also $1.5B 4.750% Notes due 2035, $750M 5.500% due 2046, $1.5B 5.550% due 2055, and $1.0B 5.700% due 2065.","Offering closed December 4, 2025 under existing shelf registration statement (333-278066).","Proceeds not specified; notes are senior unsecured obligations issued under indenture dated Jan. 6, 2010."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-25-055388","json":"https://secwatch.observer/filing/0001628280-25-055388.json","markdown":"https://secwatch.observer/filing/0001628280-25-055388.md","text":"https://secwatch.observer/filing/0001628280-25-055388.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/310158/000162828025055388/0001628280-25-055388-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/310158/000162828025055388/mrk-20251204.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T14:57:48.464512+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"}