Company: ASB
Filing Date: 2025-12-30
Form Type: S-4
Source: 0001193125-25-337086
Chunk: 86

Company: ASSOCIATED BANC-CORP
Filing Date: 2025-12-30
Form: S-4
Chunk 86
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 Counsel and Corporate Secretary of Associated.

Certain U.S. federal income tax
consequences of the Merger will be passed upon for Associated by Wachtell, Lipton, Rosen & Katz, New York, New York, counsel for Associated, and for American National by Alston & Bird LLP, Atlanta, Georgia, counsel for American
National.

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EXPERTS

The consolidated financial statements of Associated Banc-Corp as of December 31, 2024 and 2023, and for each of the years in the
three-year period ended December 31, 2024, and management’s assessment of the effectiveness of internal control over financial reporting as of December 31, 2024 have been incorporated by reference herein in reliance upon the reports
of KPMG LLP, independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.

67

WHERE YOU CAN FIND MORE INFORMATION Associated files annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains an Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC, including Associated, which can be accessed at https://www.sec.gov. Documents filed by Associated with the SEC are available from Associated without charge. You may obtain documents filed by Associated with the SEC by requesting them in writing or by telephone from Associated at the following address: Associated Banc-Corp Attention: Investor Relations 433 Main Street Green Bay, Wisconsin 54301 (920) 491-7500 Email: investor.relations@associatedbank.com Documents filed with the SEC by Associated, including the registration statement on Form S-4,of which this information statement/prospectus forms a part, will also be available free of charge by accessing the “Financials” section of Associated’s website at https://investor.associatedbank.com, under the heading “Financials — SEC Filings.” The web addresses of the SEC and Associated are included as inactive textual references only. Except as specifically incorporated by reference into this information statement/prospectus, information on those websites is not part of, and is not incorporated into, this information statement/prospectus. Associated has filed a registration statement on Form S-4,of which this information statement/prospectus forms a part, under the Securities Act with the SEC with respect to Associated’s securities to be issued in the Merger. This document constitutes the prospectus of Associated filed as part of the registration statement.