{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-26-006503","form_type":"8-K","ticker":"MNSB","cik":"0001693577","company_name":"MainStreet Bancshares, Inc.","filed_at":"2026-03-03T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.915506+00:00","generated_at":"2026-05-15T22:23:46.148722+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"MainStreet Bancshares repurchases 174,280 shares at avg $22.45 since Jan 1","bullets":["Repurchased 174,280 common shares at average price of $22.45 per share.","Tangible book value per share was $25.52 at Dec 31, 2025, repurchase price below book.","Buyback executed under existing stock repurchase program; program may be suspended anytime."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-26-006503","json":"https://secwatch.observer/filing/0001437749-26-006503.json","markdown":"https://secwatch.observer/filing/0001437749-26-006503.md","text":"https://secwatch.observer/filing/0001437749-26-006503.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1693577/000143774926006503/0001437749-26-006503-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1693577/000143774926006503/main20260226_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T22:23:46.148722+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"}