EX-4.15 2 a17-11992_1ex4d15.htm EX-4.15 2,438,491 AMERICAN DEPOSITARY SHARES, EACH REPRESENTING 20 ORDINARY SHARES, £0.01 PAR VALUE, AND WARRANTS TO PURCHASE 1,219,246 AMERICAN DEPOSITARY SHARES MOTIF BIO PLC UNDERWRITING AGREEMENT November 17, 2016...