Company: HBAN
Filing Date: 2025-06-25
Form Type: 11-K
Source: 0000049196-25-000048
Chunk: 0

Company: HUNTINGTON BANCSHARES INC /MD/
Filing Date: 2025-06-25
Form: 11-K
Chunk 0
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### SECURITIES AND EXCHANGE COMMISSION

#### Washington D.C., 20549

#### FORM 11-K
| ý |     | ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

#### FOR THE FISCAL YEAR ENDED DECEMBER 31, 2024

#### OR
| ¨ |     | TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

### FOR THE TRANSITION PERIOD FROM

#### TO
#### .

#### COMMISSION FILE NO. 1-34073
| A. |     | Full Title of the Plan and the address of the Plan, if different from that of the issuer named below: |

#### The Huntington 401(k) Plan
| B. |     | Name of issuer of the securities held pursuant to the Plan and the address of its principal executive office: |

#### Huntington Bancshares Incorporated

#### Huntington Center

#### 41 South High Street

#### Columbus, Ohio 43287

#### THE HUNTINGTON 401(k) PLAN

### REQUIRED INFORMATION
Item 4. Financial Statements and Supplemental Schedule for the Plan.

The Huntington 401(k) Plan (the “Plan”) is subject to the Employee Retirement Income Security Act of 1974 (“ERISA”). In lieu of the requirements of Items 1-3 of this Form, the Plan is filing financial statements and a supplemental schedule prepared in accordance with the financial reporting requirements of ERISA. The Plan financial statements and supplemental schedule for the fiscal year ended 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 as of and for the year ended December 31, 2024 have been audited by Ary Roepcke Mulchaey, P.C., Independent Registered Public Accounting Firm, and their report is included therein.

### EXHIBITS
| 23.1 |     | Consent of Independent Registered Public Accounting Firm, Ary Roepcke Mulchaey, P.C. |

<div align='center'>SIGNATURES</div>

Pursuant to the requirements of the Securities Exchange Act of 1934, Huntington Bancshares Incorporated has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

| Date: |     | June 25,