Company: ASB
Filing Date: 2025-12-30
Form Type: S-4
Source: 0001193125-25-337086
Chunk: 89

Company: ASSOCIATED BANC-CORP
Filing Date: 2025-12-30
Form: S-4
Chunk 89
---
 you should not rely on it. This information statement/prospectus is dated [ ]. You should not assume that the information is accurate as of any date other than that date, and neither its mailing to American National 69

shareholders or Associated shareholders nor the issuance of shares of Associated common stock in the Merger will create any implication to the contrary. Neither Associated nor American National
assumes any obligation to update the information contained in this document (whether as a result of new information, future events or otherwise), except as required by applicable law. The information contained in this document with respect to
Associated was provided by Associated, and the information contained in this document with respect to American National was provided by American National.

70

Annex A

Execution Version

AGREEMENT AND PLAN OF MERGER

by
and between

ASSOCIATED BANC-CORP

and

AMERICAN NATIONAL
CORPORATION

DATED AS OF NOVEMBER 30, 2025

TABLE OF CONTENTS

| ARTICLE I                                     |     |                                                    |     |      |
| THE MERGER                                    |     |                                                    |     |      |
| 1.1                                           |     | The Merger                                         |     | A-2  |
| 1.2                                           |     | Closing                                            |     | A-2  |
| 1.3                                           |     | Effective Time                                     |     | A-2  |
| 1.4                                           |     | Effects of the Merger                              |     | A-2  |
| 1.5                                           |     | Conversion of Company Common Stock                 |     | A-2  |
| 1.6                                           |     | Parent Common Stock                                |     | A-3  |
| 1.7                                           |     | Articles of Incorporation of Surviving Corporation |     | A-3  |
| 1.8                                           |     | Bylaws of Surviving Corporation                    |     | A-3  |
| 1.9                                           |     | Tax Consequences                                   |     | A-3  |
| 1.10                                          |     | Bank Merger                                        |     | A-3  |
| ARTICLE II                                    |     |                                                    |     |      |
| EXCHANGE OF SHARES                            |     |                                                    |     |      |
| 2.1                                           |     | Parent to Make Merger Consideration Available      |     | A-4  |
| 2.2                                           |     |