X0609 4 2026-06-15 0000007789 ASSOCIATED BANC-CORP ASB 0001314486 SULLIVAN OWEN J false C/O ASSOCIATED BANC-CORP 433 MAIN STREET GREEN BAY WI 54301 1 0 Common Stock $0.01 Par Value 2026-06-15 4 A 0 38 29.22 A 10085 D Dividend equivalent units, which vest on the first anniversary of the grant of the restricted stock units to which they relate, are payable solely in shares of common stock upon vesting (subject to deferral if so elected by the Insider). /s/ Lynn M. Floeter, by POA from Owen J. Sullivan 2026-06-17