Company: WBS-PG
Filing Date: 2025-09-05
Form Type: 424B5
Source: 0001193125-25-197211
Chunk: 122

Company: WEBSTER FINANCIAL CORP
Filing Date: 2025-09-05
Form: 424B5
Chunk 122
---
. Specifically, the Company did not design and implement appropriate logical access controls including deprovisioning, privileged access, and user access reviews. These control deficiencies were a result of ineffective risk
assessment associated with the IT environment and individuals with insufficient knowledge and training associated with designing and implementing the controls. As a result, process level automated controls and manual controls that are dependent on
the completeness and accuracy of information derived from the affected IT systems are considered ineffective because they could have been adversely impacted.

The consolidated financial statements of Sterling Bancorp as of December 31, 2021 and 2020, and for each of the fiscal years ended December 31,
2021, 2020, and 2019 appearing in Webster Financial Corporation’s Current Report on Form 8-K/A filed with the SEC on April 15, 2022 have been incorporated by reference herein and in the registration
statement in reliance upon the report of Crowe LLP, independent auditor, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.

41

$350,000,000 5.784% Fixed Rate Reset Subordinated Notes due 2035 Prospectus Supplement Joint Book-Running Managers

| BofA Securities |     | Goldman Sachs & Co. LLC |     | J.P. Morgan |     | Morgan Stanley |

Co-Manager Piper Sandler September 4, 2025