---
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"
generated_at: "2026-05-17T01:10:27.982481+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# M&T Bank raises $450M via 18M depositary shares of 6.350% Series K Preferred Stock

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 3.03, 5.03, 8.01, 9.01
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-260717
- JSON: https://secwatch.observer/filing/0001193125-25-260717.json
- Plain text: https://secwatch.observer/filing/0001193125-25-260717.txt

## Key facts
- Governance Changes
  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).
  - Change: charter amendment
  - Effective: 2025-10-29
  source text: 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_url: https://www.sec.gov/Archives/edgar/data/36270/000119312525260717/0001193125-25-260717-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.