Company: WBS-PG
Filing Date: 2025-09-05
Form Type: 424B5
Source: 0001193125-25-197211
Chunk: 95

Company: WEBSTER FINANCIAL CORP
Filing Date: 2025-09-05
Form: 424B5
Chunk 95
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| • |     | to supplement any of the provisions of an indenture to the extent necessary to permit or facilitate defeasance                                                                                    
 and discharge of any series of debt securities, provided that the supplement does not adversely affect the interests of the holders of the debt securities of any series in any material respect; |

| • |     | to make provisions with respect to the conversion or exchange terms and conditions applicable to the debt 
 securities of any series;                                                                                 |

| • |     | to add to, delete from or revise the conditions, limitations or restrictions on issue, authentication and 
 delivery of debt securities;                                                                              |

| • |     | to conform any provision in an indenture to the requirements of the Trust Indenture Act; or |

| • |     | to make any change that does not adversely affect the legal rights under an indenture of any holder of debt 
 securities of any series issued under that indenture.                                                       |

In determining whether the holders of the requisite principal amount of outstanding debt securities of a series have given any request, demand, authorization, direction, notice, consent or waiver under the indenture or whether a quorum is present at a meeting of holders of debt securities:

| • |     | the principal amount of an original issue discount security that is deemed to be outstanding will be the amount                                                                                                        
 of the principal of that original issue discount security that would be due and payable as of the date of the determination upon declaration of acceleration of the maturity of that original issue discount security; |

| • |     | the principal amount of any debt security denominated in a foreign currency that is deemed outstanding will be                                                                                                                                     
 the U.S. dollar equivalent, determined on the issue date for that debt security, of the principal amount, or, in the case of an original issue discount security, the U.S. dollar equivalent on the issue date of that debt security of the amount 
 determined as provided in the immediately preceding bullet point;                                                                                                                                                                                  |

| • |     | the principal amount of an indexed security that is deemed outstanding will be the principal face amount of the                           
 indexed security at original issuance, unless otherwise provided with respect to the indexed security under the applicable indenture; and |

| • |     | debt securities owned by Webster or any other obligor upon the debt securities or any affiliate of Webster or of 
 any other obligor are to be disregarded.                                                                         |

Discharge, Defeasance and Covenant Defeasance Discharge We may be permitted under the applicable indenture to discharge specific