Company: WBS-PG
Filing Date: 2025-06-26
Form Type: 11-K
Source: 0000801337-25-000059
Chunk: 14

Company: WEBSTER FINANCIAL CORP
Filing Date: 2025-06-26
Form: 11-K
Chunk 14
---
     41,892 |     | units  |     | **   |     |               |     5,656,718 |
| *   |     | Fidelity Mid-Cap Stock Commingled Pool Class Z                      |     |                                                                                                        |  1,317,524 |     | units  |     | **   |     |               |    32,648,245 |
|     |     | Total common collective trusts                                      |     |                                                                                                        |            |     |        |     |      |     |               |   831,533,005 |
|     |     | Notes receivable from participants:                                 |     |                                                                                                        |            |     |        |     |      |     |               |               |
| *   |     | Notes receivable from participants                                  |     | Varying maturity dates                                                                                 
 with interest rates ranging                                                                            
 from 3.25% to 9.50%                                                                                    |            |     |        |     | **   |     |               |    10,060,666 |
|     |     | Total investments and notes receivable from participants            |     |                                                                                                        |            |     |        |     |      |     | $             | 1,125,226,011 |

*Party-in-interest, as defined by ERISA.

**All investments are participant-directed. Therefore, disclosure of cost information is not required.

See Report of Independent Registered Public Accounting Firm

<div align='center'>10</div>

#### Exhibit Index
| Exhibit 
 Number  |     | Description                                              |
| 23      |     | Consent of Independent Registered Public Accounting Firm |

<div align='center'>11</div>

### SIGNATURES
The Plan. Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

| Date: |     | June 26, 2025 |     | WEBSTER BANK                                          
 RETIREMENT SAVINGS PLAN                               
 /s/ Albert J. Wang                                    |
|:------|:----|:--------------|:----|:------------------------------------------------------|
|       |     |               |     | Albert J. Wang                                        |
|       |     |               |     | Executive Vice President and Chief Accounting Officer |
| Date: |     | June 26, 2025 |     | /s/