Company: ASB
Filing Date: 2025-06-27
Form Type: 11-K
Source: 0000007789-25-000097
Chunk: 7

Company: ASSOCIATED BANC-CORP
Filing Date: 2025-06-27
Form: 11-K
Chunk 7
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 observable at commonly quoted intervals.

Level 3 inputs – unobservable inputs for the asset or liability, which are typically based on the Plan’s own assumptions, as there is little, if any, related market activity.

Various inputs are used in determining the fair value of the Plan’s investments as of the reporting period end. The designated input levels are not necessarily an indication of the risk or liquidity associated with this investment.

The following is a description of the valuation methodologies used for Plan assets measured at fair value. There have been no changes in the valuation methodologies used at December 31, 2024 and 2023, respectively, and there have been no transfers between fair value levels.

Collective trust funds and Common stock fund: Generally these investments are measured at fair value using the NAV per share (or its equivalent) practical expedient and therefore have not been classified in the fair value hierarchy. This practical expedient is not used when it is determined to be probable that the fund will sell the investment for an amount different than the reported NAV. Were the Plan to initiate a full redemption of the fund, the investment advisor reserves the right to temporarily delay withdrawal from the trust in order to ensure that securities liquidations will be carried out in an orderly business manner.

Collective trust funds that have a target retirement date are not valued at NAV as they are valued similar to a mutual fund, however they are considered collective trust funds.

Mutual funds: Valued at the daily closing price as reported by the fund. Mutual funds held by the Plan are open-ended mutual funds that are registered with the Securities and Exchange Commission. These funds are required to publish their daily NAV and to transact at that price. The mutual funds held by the Plan are deemed to be actively traded.

<div align='center'>7</div>

### ASSOCIATED BANC-CORP

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

December 31, 2024 and 2023</div>

The following table sets forth by level, within the fair value hierarchy, the Plan's fair value measurements at December 31, 2024 and 2023, respectively:

| Investments at December 31, 2024                   |     | Fair Value |             |     | Level 1 |             |     | Level 2 |   |     | Level 3 |        |
|:---------------------------------------------------|:----|:-----------|------------:|:----|:--------|------------:|