Company: HBAN
Filing Date: 2025-12-10
Form Type: 425
Source: 0000049196-25-000089
Chunk: 0

Company: HUNTINGTON BANCSHARES INC /MD/
Filing Date: 2025-12-10
Form: 425
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
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#### FORM 8-K
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### CURRENT REPORT

#### Pursuant to Section 13 OR 15(d)

#### of The Securities Exchange Act of 1934
<div align='center'>Date of Report (Date of earliest event reported) December 9, 2025

______________________________________________________________________________________________________________________________</div>

#### Huntington Bancshares Incorporated
<div align='center'>(Exact name of registrant as specified in its charter)

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| Maryland                        |     | 1-34073     |     | 31-0724920         |
| (State or other jurisdiction of 
 incorporation or organization)  |     | -Commission 
 File Number |     | -I.R.S. Employer   
 Identification No. |

<div align='center'>Registrant's address: 41 South High Street, Columbus, Ohio 43287

Registrant’s telephone number, including area code: (614) 480-2265</div>

#### Not Applicable
<div align='center'>(Former name or former address, if changed since last report.)</div>

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

| ☒ |     | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)                  |
| ☐ |     | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)                 |
| ☐ |     |                                                                                                        |
| ☐ |     | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ |     | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

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Securities registered pursuant to Section 12(b) of the Act:</div>

| Title of class                                                                                                                   |     | Trading   
 Symbol(s) |     | Name of exchange on which registered |
| Depositary