X0206 3/A 2017-10-24 2017-10-31 0 0000007789 ASSOCIATED BANC-CORP ASB 0001721176 Kitowski Nicole M 433 MAIN STREET GREEN BAY WI 54301 1 Executive Vice President Common Stock $0.01 Par Value 12161.837 D Common Stock $0.01 Par Value 1532.71 I 401(k) Plan Common Stock $0.01 Par Value 13 I by Spouse Non-qualified Stock Option (Right to Buy) 24.89 2018-01-23 Common Stock $0.01 Par Value 1200 D Non-qualified Stock Option (Right to Buy) 17.67 2024-03-17 Common Stock $0.01 Par Value 2473 D Non-qualified Stock Option (Right to Buy) 26.00 2027-02-27 Common Stock $0.01 Par Value 8741 D Due to a clerical accounting error unvested restricted stock units were not accurately reflected under insider's beneficial ownership. Options vested in annual increments over 3 years; 34% on the first anniversary after the grant date, and 33% on the second and third anniversaries after the grant date, respectively. Options vest in annual increments over 4 years. 25% will vest on each anniversary after the grant date. Options vest in four equal installments beginning on February 8, 2018. \s\ Tracy A. Devine, attorney-in-fact for Nicole M. Kitowski 2017-12-18