X0306 4 2018-01-16 0000916907 SOUTHERN MISSOURI BANCORP, INC. SMBC 0001355433 HECKER MARK E SOUTHERN MISSOURI BANCORP, INC. 2991 OAK GROVE ROAD POPLAR BLUFF MO 63901 0 1 0 0 EVP, Chief Credit Officer Common Stock 2018-01-16 4 A 0 500 0 A 2160 D Common Stock 185 I Held by Spouse in IRA Common Stock 8220 I Held in IRA Stock Option (Right to Buy) 37.31 2018-01-16 4 A 0 2000 0 A 2028-01-16 Common Stock 2000 2000 D The shares are scheduled to vest over a five-year period beginning February 9, 2019, with up to 20% of the shares vesting on that date and on each of the next four anniversaries of that date based on the extent to which the Company's annualized return on average assets over the 12 calendar quarters ending immediately prior to the applicable vesting date exceeds a threshold level. The options become exercisable in 20% installments over a five year period with the first installment vesting on 1/16/2019. Each remaining installment vests annually thereafter. /s/ Mark E. Hecker 2018-01-18