X0306 4 2020-01-02 0 0001098972 AGENUS INC AGEN 0001187314 WIINBERG ULF C/O AGENUS INC. 3 FORBES ROAD LEXINGTON MA 02421 1 0 0 0 Deferred Stock Units 2020-01-02 4 A 0 5667.535 A Common Stock 5667.535 67410.805 D Deferred Stock Units convert to shares of Common Stock on a 1 for 1 basis. Acquired under the Agenus Inc. Director Deferred Compensation Plan, as amended. Deferred Stock Units represent an equal amount of the Company's common stock to be distributed under the terms of the plan, typically once the director ceases to serve as a director of the Company. $3.419 per Deferred Stock Unit acquired on January 2, 2020. The price of each Deferred Stock Unit acquired prior to January 2, 2020 is the average of the closing price for the Company's common stock for all trading days during the calendar quarter immediately preceding the date such Deferred Stock Unit was acquired pursuant to the Agenus Inc. Director Deferred Compensation Plan, as amended. /s/Evan D. Kearns, as Attorney-in-Fact for Ulf Wiinberg 2020-01-06