{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-23-015503","form_type":"8-K","ticker":"ESPR","cik":"0001434868","company_name":"Esperion Therapeutics, Inc.","filed_at":"2023-05-04T23:59:59+00:00","discovered_at":"2026-05-14T18:03:38.856449+00:00","generated_at":"2026-06-15T21:34:01.641282+00:00","sec_items":["8.01","9.01"],"event_type":"litigation","sentiment":"negative","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"Esperion sues Daiichi Sankyo Europe over $300M milestone payment dispute","bullets":["Filed amended complaint seeking declaration that DSE must pay $300M regulatory milestone upon cardiovascular risk reduction label.","DSE informed Esperion on March 8, 2023 it would not make payment, citing MACE-4 result below 15%.","Agreement requires payment for >20% risk reduction based on CLEAR Outcomes study; DSE's interpretation allegedly contradicts plain terms.","Esperion claims DSE's repudiation caused 54% stock drop and is bad-faith attempt to renegotiate.","Court in Southern District of New York; expedited declaratory judgment sought."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-23-015503","json":"https://secwatch.observer/filing/0001628280-23-015503.json","markdown":"https://secwatch.observer/filing/0001628280-23-015503.md","text":"https://secwatch.observer/filing/0001628280-23-015503.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1434868/000162828023015503/0001628280-23-015503-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1434868/000162828023015503/espr-20230504.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-15T21:34:01.641282+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"}