{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-323692","form_type":"8-K","ticker":"LONA","cik":"0001620463","company_name":"LeonaBio, Inc.","filed_at":"2025-12-18T23:59:59+00:00","discovered_at":"2026-05-14T18:02:39.944641+00:00","generated_at":"2026-05-16T12:44:54.633041+00:00","sec_items":["1.01","3.02","7.01","8.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Athira Pharma raises ~$90M via PIPE and licenses lasofoxifene from Sermonix","bullets":["PIPE gross proceeds ~$90M; investors include Commodore, TCGX, Perceptive; priced at $6.35/share with warrants.","Sermonix license grants exclusive rights to oral lasofoxifene outside Asia; $34.9M equity issued to Sermonix.","Milestone payments to Sermonix up to $100M; royalties from sub-single to low-single digit percentages.","Ligand agreement imposes separate milestones up to $21M and mid-single to low-double digit royalties.","Commodore and TCGX each get board designee if holding ≥5%; Company to seek resignation of two current directors."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-323692","json":"https://secwatch.observer/filing/0001193125-25-323692.json","markdown":"https://secwatch.observer/filing/0001193125-25-323692.md","text":"https://secwatch.observer/filing/0001193125-25-323692.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1620463/000119312525323692/0001193125-25-323692-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1620463/000119312525323692/atha-20251218.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T12:44:54.633041+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"}