Company: FITBI
Filing Date: 2025-10-06
Form Type: 425
Source: 0001193125-25-230874
Chunk: 0

Company: FIFTH THIRD BANCORP
Filing Date: 2025-10-06
Form: 425
Chunk 0
---
UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of report (Date of earliest event reported): October 6, 2025 (October 5, 2025) Fifth Third Bancorp (Exact Name of Registrant as Specified in Its Charter) OHIO (State or Other Jurisdiction of Incorporation)

| 001-33653                                  |     |         31-0854434 |
| (Commission                                
 File Number)                               |     |      -IRS Employer 
 Identification No. |
| Fifth Third Center                         |     |                    |
| 38 Fountain Square Plaza, Cincinnati, Ohio |     |              45263 |
| (Address of Principal Executive Offices)   |     |          -Zip Code |

(800) 972-3030 (Registrant’s Telephone Number, Including Area Code) Not Applicable (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-Kfiling is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions ( seeGeneral 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)) |

Securities registered pursuant to Section 12(b) of the Act:

| Title of each class                                                                                                                       |     | Trading   
 Symbol(s) |     | Name of each exchange       
 on which registered         |
| Common Stock, Without Par Value                                                                                                           |     | FITB      |     | The NASDAQ Stock Market LLC |
| Depositary Shares Representing a 1/1000th Ownership Interest in a Share of 6.625% Fixed-to-Floating Rate                                  
 Non-Cumulative Perpetual Preferred Stock, Series I                                                                                        |     | FITBI     |     | The