{"schema_version":"secwatch.filing_event.v1","accession":"0000885725-26-000041","form_type":"8-K","ticker":"BSX","cik":"0000885725","company_name":"BOSTON SCIENTIFIC CORP","filed_at":"2026-05-18T11:15:03+00:00","discovered_at":"2026-05-18T11:20:00.357499+00:00","generated_at":"2026-05-18T11:21:50.966683+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Boston Scientific invests $1.5B for ~34% stake in MiRus, gains option to acquire TAVR system for $3B","bullets":["Paid $1.5B cash for 33.75% non-voting equity in MiRus; exclusive call option to buy TAVR business for $3.0B upon clinical/regulatory milestones.","SIEGEL TAVR valve uses proprietary rhenium alloy, nickel-free, balloon-expandable, delivered through 8 Fr sheath; still investigational.","Option includes right to acquire mitral/tricuspid replacement assets; if option not exercised, equity stake forfeited or reduced ~75%.","MiRus initiated STAR pivotal trial (up to 1,025 patients) evaluating SIEGEL valve; early feasibility study presented in 2025.","Investment expected immaterial to 2026 adjusted EPS; collaboration aims to bring differentiated TAVR system to aortic stenosis market."],"urls":{"canonical":"https://secwatch.observer/filing/0000885725-26-000041","json":"https://secwatch.observer/filing/0000885725-26-000041.json","markdown":"https://secwatch.observer/filing/0000885725-26-000041.md","text":"https://secwatch.observer/filing/0000885725-26-000041.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/885725/000088572526000041/0000885725-26-000041-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/885725/000088572526000041/bsx-20260518.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-18T11:21:50.966683+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"}