X0306 4 2017-09-15 0000007789 ASSOCIATED BANC-CORP ASB 0001291523 WILLIAMS JOHN B C/O ASSOCIATED BANC-CORP 433 MAIN STREET GREEN BAY WI 54301 1 Common Stock $0.01 Par Value 2017-09-15 4 A 0 111 22.90 A 27115 D Common Stock $0.01 Par Value 2017-09-15 4 A 0 28 22.90 A 27143 D Common Stock $0.01 Par Value 6000 I IRA Dividend equivalents will become fully vested on the fourth anniversary of the grant of the restricted stock units they have been paid on. They are payable solely in shares of common stock following the date the Insider ceases serving as a director. Fully vested dividend equivalents received on restricted stock units payable solely in shares of common stock following the date the Insider ceases serving as a director. /s/ Tracy A. Devine, attorney-in-fact for John B. Williams 2017-09-19