{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-199686","form_type":"8-K","ticker":"ALNY","cik":"0001178670","company_name":"ALNYLAM PHARMACEUTICALS, INC.","filed_at":"2025-09-10T23:59:59+00:00","discovered_at":"2026-05-14T18:02:43.498840+00:00","generated_at":"2026-05-17T06:57:47.157913+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":"Alnylam prices $575M zero-coupon convertible notes due 2028; repurchases $637.8M of 2027 notes","bullets":["$575M principal of 0.00% convertible senior notes due 2028 priced; initial conversion price ~$670.11/share, 40% premium to VWAP.","Net proceeds ~$561.6M; ~$30.7M used for capped call transactions with cap price ~$837.61/share (75% premium).","Concurrently repurchased ~$637.8M of existing 1.00% convertible notes due 2027 for ~$1,105.8M including accrued interest.","Offering upsized from earlier $500M announcement; initial purchasers have option for additional $86.25M.","Closing expected Sept 12, 2025; notes mature Sept 15, 2028; redeemable after Sept 20, 2027 if stock >130% conversion price."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-199686","json":"https://secwatch.observer/filing/0001193125-25-199686.json","markdown":"https://secwatch.observer/filing/0001193125-25-199686.md","text":"https://secwatch.observer/filing/0001193125-25-199686.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1178670/000119312525199686/0001193125-25-199686-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1178670/000119312525199686/d72540d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T06:57:47.157913+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"}