Company: WBS-PG
Filing Date: 2025-09-05
Form Type: 424B5
Source: 0001193125-25-197211
Chunk: 5

Company: WEBSTER FINANCIAL CORP
Filing Date: 2025-09-05
Form: 424B5
Chunk 5
---
 future periods. However, these words are not the exclusive means of identifying such statements. Examples of forward-looking statements include, but are not limited to:

| • |     | projections of revenues, expenses, income or loss, earnings or loss per share and other financial items; |

| • |     | statements of plans, objectives and expectations of the Company or its management or Board of Directors; |

| • |     | statements of future economic performance; and |

| • |     | statements of assumptions underlying such statements. |

Forward-looking statements are based on the Company’s current expectations and assumptions regarding its business, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict, and in many cases, are beyond the Company’s control. The Company’s actual results may differ materially from those contemplated by the forward-looking statements, which are neither statements of historical fact nor guarantees or assurances of future performance. Factors that could cause the Company’s actual results to differ from those discussed in any forward-looking statements include, but are not limited to:

| • |     | our ability to successfully execute our business plan and strategic initiatives and manage any risks or 
 uncertainties;                                                                                          |

| • |     | continued regulatory changes or other risk mitigation efforts taken by government agencies in response to the 
 risk to safety and soundness in the banking industry;                                                         |

| • |     | volatility in Webster’s stock price due to investor sentiment and perception of the banking industry; |

| • |     | local, regional, national and international economic conditions or macroeconomic instability (including any                                                                                                                             
 economic slowdown or recession, inflation, monetary fluctuation, interest rate changes, credit loss trends, unemployment, changes in housing or securities markets or other factors) and the impact of the same on us or our customers; |

| • |     | volatility, disruption or uncertainty in national and international financial markets, including as a result of 
 geopolitical developments;                                                                                      |

| • |     | the impact of unrealized losses in our financial instruments, particularly in our 
 available-for-sale securities portfolio;                                          |

| • |     | changes in laws and regulations, or existing laws and regulations that we become subject to, including those                         
 concerning banking, taxes, dividends, securities, insurance, cybersecurity and healthcare administration, with which we must comply; |

| • |     | adverse conditions in the securities markets that could lead to impairment in the value of our securities 
 portfolio;