X0306 4 2020-06-19 0 0001098972 AGENUS INC AGEN 0001187314 WIINBERG ULF C/O AGENUS INC. 3 FORBES ROAD LEXINGTON MA 02421 1 0 0 0 Common Stock 2020-06-19 4 M 0 20338 A 82210 D Restricted Stock Unit 2020-06-19 4 M 0 20338 A Common Stock 20338 0 D On June 19, 2019, Mr. Wiinberg was granted 20,338 Restricted Stock Units as part of his annual compensation for service on the Executive Committee of the Agenus Inc. Board of Directors. On June 19, 2020, this award vested in full and Mr. Wiinberg was issued the underlying 20,338 shares of common stock, all in accordance with the Agenus Inc. 2019 Equity Incentive Plan. /s/Evan D. Kearns, as Attorney-in-Fact for Ulf Wiinberg 2020-06-23