{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-26-028687","form_type":"8-K","ticker":"MNSB","cik":"0001693577","company_name":"MainStreet Bancshares, Inc.","filed_at":"2026-08-21T14:31:06+00:00","discovered_at":"2026-08-21T14:32:07.927916+00:00","generated_at":"2026-08-21T14:32:13.813902+00:00","sec_items":["8.01"],"event_type":"dividend","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"MainStreet Bancshares declares $0.47 per depositary share preferred dividend","bullets":["Quarterly cash dividend of $0.47 per depositary share (1/40th of Series A preferred) declared.","Payable Sept 30, 2026 to holders of record Sept 15, 2026.","Dividend equates to $18.75 per share of Series A preferred stock (7.5% fixed rate).","1,150,000 depositary shares outstanding, representing $28.75M aggregate liquidation preference."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-26-028687","json":"https://secwatch.observer/filing/0001437749-26-028687.json","markdown":"https://secwatch.observer/filing/0001437749-26-028687.md","text":"https://secwatch.observer/filing/0001437749-26-028687.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1693577/000143774926028687/0001437749-26-028687-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1693577/000143774926028687/main20260723c_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-21T14:32:13.813902+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"}