Company: ASB
Filing Date: 2025-06-27
Form Type: 11-K
Source: 0000007789-25-000097
Chunk: 1

Company: ASSOCIATED BANC-CORP
Filing Date: 2025-06-27
Form: 11-K
Chunk 1
---
298,197 |     |      |     255,259 |
| Total deductions                                       |     |                          |  83,198,540 |     |      |  49,448,937 |
| Net increase in net assets available for plan benefits |     |                          |  74,090,349 |     |      | 115,214,688 |
| Net assets available for benefits:                     |     |                          |             |     |      |             |
| Beginning of year                                      |     |                          | 790,752,708 |     |      | 675,538,020 |
| End of year                                            |     | $                        | 864,843,057 |     | $    | 790,752,708 |

See accompanying notes to financial statements.

<div align='center'>3</div>

### ASSOCIATED BANC-CORP

#### 401(k) & EMPLOYEE STOCK OWNERSHIP PLAN
<div align='center'>Notes to Financial Statements

December 31, 2024 and 2023</div>

(1) Description of the Plan

The following brief description of the Associated Banc-Corp 401(k) & Employee Stock Ownership Plan (the “Plan”) is provided for general information. The Plan contains 401(k) provisions. Participants should refer to the summary plan description for a more complete description of the Plan’s provisions.

### Background
Associated Banc-Corp (the “Corporation”) has established the Associated Banc-Corp 401(k) & Employee Stock Ownership Plan, a defined contribution plan. The 401(k) provisions of the Plan provide for employee contributions complying with the provisions of Internal Revenue Code (the "Code") Section 401(k) as well as discretionary employer matching contributions. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA).

#### Participants
Employees of the Corporation and its subsidiaries that have adopted the Plan are eligible to participate in the employer contribution provisions of the Plan if they were employed on the last day of the year (December 31) and they completed 1,000 hours of service during the calendar year (exceptions for death, disability, and retirement). Employees are eligible to participate in the employee 401(k) contribution portion of the Plan once they complete an hour of service annually.

In conjunction with the 401(k) provisions of the Plan, participants can elect to contribute an amount between 1% of their compensation and the limitations ($23,000 for