X0306 4 2020-06-19 0 0001098972 AGENUS INC AGEN 0001758521 Jeynes-Ellis Allison M C/O AGENUS INC. 3 FORBES ROAD LEXINGTON MA 02421 1 0 0 0 Common Stock 2020-06-19 4 M 0 20338 A 49323 D Restricted Stock Unit 2020-06-19 4 M 0 20338 D Common Stock 20338 0 D On June 19, 2019, Ms. Jeynes-Ellis was granted 20,338 Restricted Stock Units as part of her 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 Ms. Jeynes-Ellis 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 Allison Jeynes-Ellis 2020-06-23