X0306 4 2020-10-01 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 2020-10-01 4 A 0 6464.583 A Common Stock 6464.583 90282.555 D Deferred Stock Units convert to shares of Common Stock on a 1 for 1 basis. Acquired under the Agenus Inc. Amended and Restated Directors' Deferred Compensation Plan, as amended (the "Plan"). 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 be a director of the Company. $3.964 per Deferred Stock Unit acquired on October 1, 2020. The price of each Deferred Stock Unit acquired prior to October 1, 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 acquire pursuant to the Plan. /s/Evan D. Kearns, as Attorney-in-Fact for Ulf Wiinberg 2020-10-01