{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-23-009291","form_type":"8-K","ticker":"ESPR","cik":"0001434868","company_name":"Esperion Therapeutics, Inc.","filed_at":"2023-03-27T23:59:59+00:00","discovered_at":"2026-05-14T18:03:44.970918+00:00","generated_at":"2026-06-17T14:43:40.526369+00:00","sec_items":["8.01","9.01"],"event_type":"litigation","sentiment":"negative","materiality_score":0.9,"calibrated_materiality_score":0.9,"confidence":"high","headline":"Esperion sues Daiichi Sankyo Europe over $300M milestone; CLEAR Outcomes showed 27% MI reduction","bullets":["Complaint seeks declaratory judgment that $300M milestone is triggered by CLEAR Outcomes' 27% nonfatal MI risk reduction.","DSE argues milestone only for MACE-4 composite risk reduction ≥15%; actual MACE-4 was 12.98%.","Esperion stock fell 63% from $3.99 to $1.49 after March 15 disclosure of dispute.","CLEAR Outcomes also showed 23% fatal+nonfatal MI and 15% stroke reduction; milestone tiers are $200M (≥15%) and $300M (≥20%).","Esperion alleges ongoing harm and difficulty raising capital due to DSE's position."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-23-009291","json":"https://secwatch.observer/filing/0001628280-23-009291.json","markdown":"https://secwatch.observer/filing/0001628280-23-009291.md","text":"https://secwatch.observer/filing/0001628280-23-009291.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1434868/000162828023009291/0001628280-23-009291-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1434868/000162828023009291/espr-20230327.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T14:43:40.526369+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"}