X0306 4 2018-06-20 0 0001098972 AGENUS INC AGEN 0001222090 JORDAN WADIH ANTIGENICS INC. 149 FIFTH AVE., SUITE 500 NEW YORK NY 10010 1 0 0 0 Common Stock 5.65 2018-06-20 4 A 0 37500 5.65 A 2019-03-02 2028-03-02 Common Stock 37500 37500 D Option was granted on March 2, 2018 subject to shareholder approval, which was obtained at the Company's annual shareholder meeting on June 20, 2018. Option awarded in accordance with the Agenus Inc. Amended and Restated 2009 Equity Incentive Plan, vesting on March 2, 2019. Christine M. Klaskin, by Power of Attorney 2018-06-22