{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-25-032884","form_type":"8-K","ticker":"MNSB","cik":"0001693577","company_name":"MainStreet Bancshares, Inc.","filed_at":"2025-11-04T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.166723+00:00","generated_at":"2026-05-17T00:39:26.003453+00:00","sec_items":["8.01"],"event_type":"other","sentiment":"positive","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"MainStreet Bancshares repurchases 209,000 shares at $18.54, below tangible book value of $24.81","bullets":["Repurchased 209,000 shares at $18.54 per share under existing buyback program.","Tangible book value was $24.81 as of Sept 30, 2025; repurchase price is a 25% discount.","Shares outstanding reduced to 7,496,571; $6.1 million remaining capacity."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-25-032884","json":"https://secwatch.observer/filing/0001437749-25-032884.json","markdown":"https://secwatch.observer/filing/0001437749-25-032884.md","text":"https://secwatch.observer/filing/0001437749-25-032884.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1693577/000143774925032884/0001437749-25-032884-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1693577/000143774925032884/main20251103_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T00:39:26.003453+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"}