---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-398138"
form_type: "8-K"
ticker: "MTB"
cik: "0000036270"
company_name: "M&T BANK CORP"
filed_at: "2026-09-22T21:22:11+00:00"
generated_at: "2026-09-22T21:24:18.795444+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# M&T Bank refreshes Medium-Term Note Program; new S-3 covers Senior Series C and Subordinated Series D

## Summary
- On Sep 22, 2026, refreshed Medium-Term Note Program to issue Senior Series C and Subordinated Series D notes from time to time.
- Filed new Form S-3 registration statement (File No. 333-299064) on Sep 22, 2026 covering the Notes.
- Distribution Agreement dated Sep 22, 2026 with RBC Capital Markets and other agents; Officers' Certificates issued same day.
- No principal amount, interest rate, maturity, or pricing disclosed yet; program is authorization, not an offering.

## SEC filing metadata
- accession: 0001193125-26-398138
- form_type: 8-K
- ticker: MTB
- cik: 0000036270
- company_name: M&T BANK CORP
- filed_at: 2026-09-22T21:22:11+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/36270/000119312526398138/0001193125-26-398138-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/36270/000119312526398138/d181022d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-398138
- JSON: https://secwatch.observer/filing/0001193125-26-398138.json
- Plain text: https://secwatch.observer/filing/0001193125-26-398138.txt

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