{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-260717","form_type":"8-K","ticker":"MTB","cik":"0000036270","company_name":"M&T BANK CORP","filed_at":"2025-10-31T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.760403+00:00","generated_at":"2026-05-17T01:10:27.982481+00:00","sec_items":["3.03","5.03","8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"M&T Bank raises $450M via 18M depositary shares of 6.350% Series K Preferred Stock","bullets":["Sold 18M depositary shares (each 1/400th interest) at $25/share; total liquidation preference $450M.","Series K is perpetual, 6.350% non-cumulative dividend, senior to common stock.","Dividends payable quarterly from Dec 15, 2025; redemption allowed on/after Dec 15, 2030 at $10,000/share.","Offering completed Oct 31, 2025; underwriters led by RBC, BofA, Morgan Stanley, UBS, Wells Fargo."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-260717","json":"https://secwatch.observer/filing/0001193125-25-260717.json","markdown":"https://secwatch.observer/filing/0001193125-25-260717.md","text":"https://secwatch.observer/filing/0001193125-25-260717.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/36270/000119312525260717/0001193125-25-260717-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/36270/000119312525260717/d940530d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T01:10:27.982481+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":[{"claim_id":"55c097f2b9bd7a3f315d9b4a6ce770cfd250061f","claim":"M&T BANK CORP: Filed a certificate of amendment to establish the rights and designations of a new series of preferred stock (Series K) (effective 2025-10-29).","evidence_excerpt":"On October 29, 2025, M&T filed with the New York State Department of State the Certificate of Amendment for the purpose of fixing the designations, preferences, limitations and relative rights of the Series K Preferred Stock.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/36270/000119312525260717/0001193125-25-260717-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"charter amendment"},{"label":"Effective","value":"2025-10-29"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}