Company: HBAN
Filing Date: 2025-09-11
Form Type: 424B2
Source: 0001193125-25-200581
Chunk: 2

Company: HUNTINGTON BANCSHARES INC /MD/
Filing Date: 2025-09-11
Form: 424B2
Chunk 2
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 no established trading market. We do not intend to apply for listing of the depositary shares on any securities exchange or for inclusion of the depositary shares in any automated dealer quotation system. Investing in the depositary shares involves risks. See “ Risk Factors” beginning on page S-6of this prospectus supplement and in “Item 1-A—RiskFactors” of our Annual Report on Form 10-Kfor the year ended December 31, 2024 filed with the U.S. Securities and Exchange Commission (the “SEC”) to read about factors you should consider before investing in the depositary shares.

|                      |     | Price to  
 Public(1) |                |     | Underwriting 
 Discount     |              |     | Proceeds, Before 
 Expenses, to     
 Huntington       |                |
|:---------------------|:----|:----------|---------------:|:----|:-------------|-------------:|:----|:-----------------|---------------:|
| Per Depositary Share |     | $         |       1,000.00 |     | $            |        10.00 |     | $                |         990.00 |
| Total                |     | $         | 750,000,000.00 |     | $            | 7,500,000.00 |     | $                | 742,500,000.00 |

| (1) | The price to the public does not include dividends, if any, that may be declared. Dividends, if declared, will 
 accrue from the date of initial issuance, which is expected to be September 11, 2025.                          |

None of the SEC, any state securities commission, the Federal Deposit Insurance Corporation (the “FDIC”), the Federal Reserve nor any other regulatory body has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is accurate or complete. Any representation to the contrary is a criminal offense. The depositary shares are not savings accounts, deposits or other obligations of any of our bank or non-banksubsidiaries and are not insured by the FDIC or any other governmental agency or instrumentality. The underwriters expect to deliver the depositary shares in book-entry form only through the facilities of The Depository Trust Company for the accounts of its participants, including Clearstream Banking, société anonyme, and Euroclear Bank S.A./N.V., as operator of the Euroclear System, against payment in New York, New York