AMENDMENT NO. 3 TO THE OPEN MARKET SALE AGREEMENTSM June 1, 2021 JEFFERIES LLC 520 Madison Avenue New York, New York 10022 Ladies and Gentlemen: This Amendment No. 3 to the Open Market Sale AgreementSM (this “Amendment”) is entered into as of the date...Open Market Sale Agreement • June 1st, 2021 • Sesen Bio, Inc. • Pharmaceutical preparations
