Company: WBS-PG
Filing Date: 2025-09-05
Form Type: 424B5
Source: 0001193125-25-197211
Chunk: 97

Company: WEBSTER FINANCIAL CORP
Filing Date: 2025-09-05
Form: 424B5
Chunk 97
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 defeasance or covenant defeasance had not occurred, and the opinion of counsel, in the case of defeasance, will be required to refer to and be based upon a ruling of the Internal 
 Revenue Service or a change in applicable U.S. federal income tax law occurring after the date of the indenture;                                                                                                                                        |

| • |     | no event of default or any event that after notice or lapse of time or both would be an event of default has 
 occurred;                                                                                                    |

| • |     | the defeasance or covenant defeasance will not result in a breach or violation of, or constitute a default under, 
 the indenture or any other material agreement or instrument to which Webster is a party or by which it is bound;  |

| • |     | certain other provisions set forth in the indenture are met; |

| • |     | we will have delivered to the trustee an officers’ certificate and an opinion of counsel, each stating that 
 all conditions precedent to the defeasance or covenant defeasance have been complied with; and              |

| • |     | in the case of the subordinated debt indenture, no event or condition will exist that, pursuant to certain                                                                                                                      
 provisions described under “—Subordination of Subordinated Debt Securities” would prevent Webster from making payments of principal of and premium, if any, and interest on the subordinated debt securities at the date of the 
 irrevocable deposit referred to above.                                                                                                                                                                                          |

In general, if we elect covenant defeasance with respect to any debt securities and payments on those debt securities are declared due and payable because of the occurrence of an event of default, the amount of money and/or government obligations on deposit with the applicable trustee would be sufficient to pay amounts due on those debt securities at the time of their stated maturity, but may not be sufficient to pay amounts due on those debt securities at the time of the acceleration resulting from the event of default. In that case, we would remain liable to make payment of the amounts due on the debt securities at the time of acceleration. The applicable prospectus supplement may further describe the provisions, if any, permitting defeasance or covenant defeasance, including any modifications to the provisions described above, with respect to the debt securities of or within a particular series. 20

Option to Extend Interest Payment Period If indicated in the applicable prospectus supplement, we will have the right, as long as no event of default under the applicable series of debt securities