144/A 0001959173-25-007508 0001791042 XXXXXXXX LIVE 0000007789 ASSOCIATED BANC-CORP 001-31343 433 MAIN STREET GREEN BAY WI 54301 920-491-7500 Ahern Patrick Edward Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

30489 783721.99 165922444 12/04/2025 NYSE Common 12/04/2025 Option Granted - 03/01/2018 Issuer N 13356 12/04/2025 Cash Common 12/04/2025 Option Granted - 03/01/2019 Issuer N 17133 12/04/2025 Cash N Rockefeller Cap Management

227 West Monroe Street Suite 2050 Chicago IL 60606

Common 09/11/2025 3342 87580.75 Rockefeller Cap Management

227 West Monroe Street Suite 2050 Chicago IL 60606

Common 12/03/2025 3327 85803.99 This Form 144 amends and supersedes the Form 144 filed on May 24, 2024. The Securities Sold During the Past 3 Months section is corrected. 12/04/2025 /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Patrick E. Ahern