Company: WBS-PG
Filing Date: 2025-09-05
Form Type: 424B5
Source: 0001193125-25-197211
Chunk: 36

Company: WEBSTER FINANCIAL CORP
Filing Date: 2025-09-05
Form: 424B5
Chunk 36
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, the notice of redemption relating to such Note shall state the portion of the principal amount thereof to be redeemed. A replacement Note in principal amount S-21

equal to the unredeemed portion thereof will be issued in the name of the holder thereof upon cancellation of the original Note. The Notes are not subject to redemption or prepayment at the option of the holders. Defaults; Events of Default; Limited Rights of Acceleration The Notes and Indenture provide for only limited events upon which the principal of the Notes may be accelerated. These events are:

| • |     | pursuant to or within the meaning of any bankruptcy law, we (i) commence a voluntary case, (ii) consent                                                                            
 to the entry of an order for relief against us in an involuntary case or (iii) consent to the appointment of a custodian of us or for all or substantially all of our property; or |

| • |     | a court of competent jurisdiction enters an order or decree under any bankruptcy law that (i) is for relief                                                                                                              
 against us in an involuntary case, (ii) appoints a custodian for us or for all or substantially all of our property or (iii) orders our liquidation, and the order or decree remains unstayed and in effect for 60 days. |

If any of the foregoing occurs and is continuing, the principal, premium (if any) and interest in respect of the Notes shall automatically, and without any declaration or other action on the part of the Trustee or any holder of the Notes, become immediately due and payable. The Notes and Indenture provide for a limited number of other events of default, which do not permit acceleration of the payment of principal, premium (if any) and interest in respect of the Notes, including:

| • |     | our default in the payment of any interest upon the Notes, when such interest becomes due and payable, and 
 continuance of such default for a period of 30 days;                                                       |

| • |     | our default in the payment of the principal of (or premium, if any on) the Notes with respect to any of the Notes                       
 when due, either at maturity, upon redemption, by declaration or otherwise, and continuance of such default for a period of 30 days; or |

| • |     | our default in the performance, or breach, of any covenant or agreement in the Indenture applicable to us, and                                                                                                                                           
 continuance of such default or breach for a period of 90 days