{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-417402","form_type":"8-K","ticker":"RNA","cik":"0002093101","company_name":"Atrium Therapeutics, Inc.","filed_at":"2026-10-08T10:52:04+00:00","discovered_at":"2026-10-08T10:55:00.160050+00:00","generated_at":"2026-10-12T15:39:59.408292+00:00","sec_items":["1.01","3.02","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Atrium Therapeutics raises $50M PIPE at $7.93/share, extending cash runway through 2028","bullets":["PIPE priced at-the-market: 5,170,384 shares at $7.93 plus pre-funded warrants for 1,134,930 shares at $7.929 each (exercise price $0.001); gross proceeds ~$50M.","Investors include Sirenia Capital Management, Aberdeen Investments, Montanova, Sessa Capital and Casdin Capital; Leerink Partners is lead placement agent with Cantor, Barclays and Wells Fargo.","Net proceeds fund development of its two lead precision-cardiology RNA product candidates, other research programs, working capital and general corporate purposes.","Company estimates proceeds plus existing cash fund operations through 2028; closing expected on or about October 9, 2026.","Post-offering common shares outstanding total 22,276,027, including shares issued to settle make-whole equity awards from the Avidity Biosciences spin-off."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-417402","json":"https://secwatch.observer/filing/0001193125-26-417402.json","markdown":"https://secwatch.observer/filing/0001193125-26-417402.md","text":"https://secwatch.observer/filing/0001193125-26-417402.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2093101/000119312526417402/0001193125-26-417402-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2093101/000119312526417402/d25901d8k.htm"},"model":{"generated_by":"deepseek-v4.1-flash:cloud@v2","generated_at":"2026-10-12T15:39:59.408292+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"}