Company: MTB-PJ
Filing Date: 2025-10-30
Form Type: 424B5
Source: 0001193125-25-257002
Chunk: 60

Company: M&T BANK CORP
Filing Date: 2025-10-30
Form: 424B5
Chunk 60
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 their own account or on behalf of their clients, and to the extent the proceeds from the offering will be used to redeem shares of M&T’s existing preferred stock , the underwriters or their affiliates may receive a portion of the proceeds in connection with any redemption of M&T’s existing preferred stock. We expect that delivery of the depositary shares will be made against payment therefor on or about October 31, 2025, which will be the third business day after the date of this prospectus supplement. Under Rule 15c6-1 ofthe SEC under the Exchange Act, trades in the secondary market generally are required to settle in one business day, unless the parties to a trade expressly agree otherwise. Accordingly, purchasers who wish to trade the depositary shares prior to one business day before delivery of the depositary shares will be required, by virtue of the fact that the depositary shares will settle in three business days, to specify an alternative settlement cycle at the time of any such trade to prevent a failed settlement. Such purchasers should consult their own advisors in this regard. Notice to Prospective Investors in the European Economic Area In relation to each Member State of the European Economic Area, no offer of the depositary shares described in this prospectus supplement may be made to the public in that Member State other than:

| • |     | to any legal entity which is a qualified investor as defined in the Prospectus Regulation; |

| • |     | to fewer than 150 natural or legal persons (other than qualified investors as defined in the Prospectus 
 Regulation), subject to obtaining the prior consent of the underwriters; or                             |

| • |     | in any other circumstances falling within Article 1(4) of the Prospectus Regulation, provided that no such offer                                                                                                          
 of the depositary shares shall require M&T or the underwriters to publish a prospectus pursuant to Article 3 of the Prospectus Regulation or supplement a prospectus pursuant to Article 23 of the Prospectus Regulation. |

For the purpose of the above provisions, the expression “an offer to the public” in relation to the depositary shares described in this prospectus supplement in any Member State means the communication in any form and by any means of sufficient information on the terms of the offer and the depositary shares to be offered so as to enable an investor to decide to purchase or subscribe for such depositary shares and the expression “Prospectus Regulation” means Regulation (EU) 2017/1129, as amended. S-38