{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-332520","form_type":"8-K","ticker":"MREO","cik":"0001719714","company_name":"Mereo BioPharma Group plc","filed_at":"2025-12-29T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.247945+00:00","generated_at":"2026-05-16T12:06:56.092470+00:00","sec_items":["7.01","8.01","9.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Mereo setrusumab Phase 3 trials miss primary fracture endpoints; BMD improvements seen","bullets":["Neither ORBIT (placebo) nor COSMIC (bisphosphonate) achieved statistical significance on annualized clinical fracture rate.","Both studies met secondary endpoint of bone mineral density (BMD) improvements with strong statistical significance.","Cash balance $48.7M at Q3 2025; company reducing pre-commercial and manufacturing costs.","Additional analyses underway; management cites low placebo fracture rate in ORBIT.","Continued partnering discussions for alvelestat; pipeline programs with partners remain."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-332520","json":"https://secwatch.observer/filing/0001193125-25-332520.json","markdown":"https://secwatch.observer/filing/0001193125-25-332520.md","text":"https://secwatch.observer/filing/0001193125-25-332520.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1719714/000119312525332520/0001193125-25-332520-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1719714/000119312525332520/mreo-20251229.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T12:06:56.092470+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"}