X0306 4 2018-06-06 0 0001659617 Moleculin Biotech, Inc. MBRX 0001674701 George Robert E. C/O MOLECULIN BIOTECH, INC. 2575 WEST BELLFORT, SUITE 333 HOUSTON TX 77054 1 0 0 0 Stock option (right to buy) 1.82 2018-06-06 4 A 0 35000 A 2028-06-06 Common Stock 35000 70000 D The options set forth in this table vest in three equal annual installments beginning on the first anniversary of the Transaction Date, subject to the grantee's continued service on the Company's Board of Directors on each vesting date. The options were issued in connection with the reporting person's Board of Director service to the Company. Exhibit 24 - Limited Power of Attorney /s/ Jonathan Foster by Power of Attorney 2018-06-08