X0306 4 2021-07-30 0 0000036506 MACKINAC FINANCIAL CORP /MI/ MFNC 0001680897 Deering Jesse A 260 EAST BROWN ST. SUITE 300 BIRMINGHAM MI 48009 0 1 0 0 EVP and CFO Common Stock 2021-07-30 4 S 0 296 20.5275 D 770 I By 401(k) Plan Common Stock 2021-08-02 4 S 0 136 20.5238 D 634 I By 401(k) Plan Common Stock 2021-08-03 4 S 0 634 20.5 D 0 I By 401(k) Plan Common Stock 30288 D The sale of shares was made in connection with the wind-down of the Issuer's 401(k) Plan, and includes the sale of shares accumulated by the plan for the reporting person's account since the date of the issuer's most recent Section 16 filing. The price represents the weighted average price of the multiple transactions reported on this line. The shares were sold at prices ranging from $20.50 to $20.61 per share. Upon request by the SEC staff, the issuer or any securityholder of the issuer, the reporting person will provide full information regarding the number of shares sold at each separate price. The price represents the weighted average price of the multiple transactions reported on this line. The shares were sold at prices ranging from $20.50 to $20.59 per share. Upon request by the SEC staff, the issuer or any securityholder of the issuer, the reporting person will provide full information regarding the number of shares sold at each separate price. /s/ Jeffrey H. Kuras, by Power of Attorney 2021-08-03