Company: MTB-PJ
Filing Date: 2025-06-18
Form Type: 11-K
Source: 0001628280-25-032043
Chunk: 0

Company: M&T BANK CORP
Filing Date: 2025-06-18
Form: 11-K
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### FORM 11-K
<div align='center'>[X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE</div>

#### SECURITIES EXCHANGE ACT OF 1934

#### For the fiscal year ended December 31, 2024

#### or
<div align='center'>[ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE</div>

#### SECURITIES EXCHANGE ACT OF 1934

#### Commission file number 1-9861
| A.Full title of the plan and the address of the plan, if different from that of the issuer named below: |

### M&T BANK CORPORATION

### RETIREMENT SAVINGS PLAN
| A.Name of issuer of the securities held pursuant to the plan and the address of its principal executive office: |

### M&T BANK CORPORATION

#### One M&T Plaza

#### Buffalo, New York 14203
Table of Contents of Information Required in Report

Item 4. Financial Statements and Supplemental Schedule for the Plan.

The M&T Bank Corporation Retirement Savings Plan (“the Plan”) is subject to the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). In lieu of the requirements of Items 1-3 of this Form, the Plan is filing the financial statements and supplemental schedule prepared in accordance with the financial reporting requirements of ERISA. The Plan financial statements for the years ended December 31, 2024 and 2023 and the supplemental schedule as of December 31, 2024 are included as Exhibit 99.1 to this report on Form 11-K and are incorporated herein by reference. The Plan financial statements and supplemental schedule have been examined by PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm, and their report is included therein.

|            |     |                                                                                                                                                                                                                   |     | Page(s) |
| SIGNATURES |     |                                                                                                                                                                                                                   |     |       3 |
| EXHIBITS   |     |                                                                                                                                                                                                                   |     |         |
| 23.1       |     | Consent of Independent Registered Public Accounting Firm                                                                                                                                                          |     |       4 |
| 99.1       |     | Financial statements and supplemental schedule of the M&T Bank Corporation Retirement Savings Plan for the year ended December 31,2024, prepared in accordance with the financial reporting requirements of ER