X0609 4 2026-08-12 0000007789 ASSOCIATED BANC-CORP ASB 0002040938 Warsek Gregory false C/O ASSOCIATED BANK CORP 433 MAIN STREET GREEN BAY WI 54301 1 EVP 0 Common Stock $0.01 Par Value 2026-08-12 4 S 0 3282 32.00 D 13809 D Common Stock $0.01 Par Value 2026-08-12 4 M 0 13018 26.00 A 26827 D Common Stock $0.01 Par Value 2026-08-12 4 S 0 13018 32.01 D 13809 D Common Stock $0.01 Par Value 2026-08-12 4 I 0 14927 0 D 13605.08 I By 401(K) Plan Incentive Stock Option (Right to Buy) 26.00 2026-08-12 4 M 0 13018 0 D 2027-02-27 Common Stock $0.01 Par Value 13018 0 D The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.00 to $32.015, inclusive. The reporting person undertakes to provide to Associated Banc-Corp, any security holders of Associated Banc-Corp, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnotes above. Reflects the intra-plan transfer (reallocation) of equivalent units of Issuer common stock out of the Issuer stock fund and into an alternative investment fund within the Issuer's 401(k) Plan. Options vest in four equal annual installments beginning 2/8/2018. /s/ Lynn M. Floeter, by POA from Gregory Warsek 2026-08-13