{"schema_version":"secwatch.filing_event.v1","accession":"0000310158-25-000047","form_type":"8-K","ticker":"MRK","cik":"0000310158","company_name":"Merck & Co., Inc.","filed_at":"2025-09-09T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.020345+00:00","generated_at":"2026-05-17T07:24:00.790109+00:00","sec_items":["8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Merck closes $6B multi-tranche debt offering: floating-rate notes due 2027 to 5.700% notes due 2055","bullets":["Offered $500M floating rate notes due 2027, $750M 3.850% notes due 2027, $750M 4.150% notes due 2030.","Offered $1B 4.550% notes due 2032, $1.75B 4.950% notes due 2035, $1.25B 5.700% notes due 2055.","Total aggregate principal amount of the offering is $6 billion, closed on September 9, 2025.","Proceeds use not specified; offering was underwritten public under existing shelf registration."],"urls":{"canonical":"https://secwatch.observer/filing/0000310158-25-000047","json":"https://secwatch.observer/filing/0000310158-25-000047.json","markdown":"https://secwatch.observer/filing/0000310158-25-000047.md","text":"https://secwatch.observer/filing/0000310158-25-000047.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/310158/000031015825000047/0000310158-25-000047-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/310158/000031015825000047/mrk-20250909.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T07:24:00.790109+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"}