{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-26-042954","form_type":"8-K","ticker":"MTNB","cik":"0001582554","company_name":"Matinas BioPharma Holdings, Inc.","filed_at":"2026-09-16T21:15:42+00:00","discovered_at":"2026-09-16T21:18:00.513144+00:00","generated_at":"2026-09-16T21:18:06.011476+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Matina's BioPharma announces 1-for-15 reverse stock split effective Sept 28, 2026","bullets":["Board approved 1-for-15 reverse stock split; effective 12:01 a.m. ET on Sept 28, 2026.","Trading on split-adjusted basis under symbol MTNB begins Sept 28; new CUSIP 576810 402.","No fractional shares issued; stockholders receive proportional cash instead.","Percentage ownership and voting power unchanged; authorized shares and par value unaffected.","Company notes no assurance split will enable continued NYSE American listing."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-042954","json":"https://secwatch.observer/filing/0001493152-26-042954.json","markdown":"https://secwatch.observer/filing/0001493152-26-042954.md","text":"https://secwatch.observer/filing/0001493152-26-042954.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1582554/000149315226042954/0001493152-26-042954-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1582554/000149315226042954/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-16T21:18:06.011476+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"}