Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549   FORM 8-K   CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934   Date of Report (Date of earliest event reported) December 1, 2023    Associated Banc-Corp (Exact name of registrant as specified in its charter)   Wisconsin 001-31343 39-1098068 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)   433 Main Street , Green Bay , Wisconsin 54301 (Address of principal executive offices) (Zip code)   Registrant ’ s telephone number, including area code ( 920 ) 491-7500     (Former name or former address, if changed since last report)   Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):   ¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))   Securities registered pursuant to Section 12(b) of the Act:   Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, par value $0.01 per share ASB The New York Stock Exchange Depositary Shrs, each representing 1/40th intrst in a shr of 5.875% Non-Cum. Perp Pref Stock, Srs E ASB PrE The New York Stock Exchange Depositary Shrs, each representing 1/40th intrst in a shr of 5.625% Non-Cum. Perp Pref Stock, Srs F ASB PrF The New York Stock Exchange 6.625% Fixed-Rate Reset Subordinated Notes due 2033 ASBA The New York Stock Exchange   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).   Emerging growth company   ¨   If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ¨           Item 7.01 Regulation FD Disclosure.   Associated Banc-Corp (the “Company”) is furnishing herewith its Fall 2023 Shareholder Engagement presentation, attached as Exhibit 99.1 to this Current Report on Form 8-K. The Company intends to use the presentation, in whole or in part, from time to time in one or more meetings with its shareholders and other constituents.   The information furnished pursuant to this Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities under that Section and shall not be deemed to be incorporated by reference into any filing by the Company under the Securities Act of 1933 or the Exchange Act.   Item 9.01 Financial Statements and Exhibits.   (d) Exhibits   99.1 Associated Banc-Corp Fall 2023 Shareholder Engagement Presentation     104 Cover Page Interactive Date File (embedded within the Inline XBRL Document)   2     SIGNATURES   Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.     Associated Banc-Corp   (Registrant)     Date:  December 1, 2023 By: /s/ Randall J. Erickson     Randall J. Erickson     Executive Vice President, General Counsel and Corporate Secretary   3