X0306 4/A 2019-12-17 2019-12-23 0 0001098972 AGENUS INC AGEN 0000935679 ARMEN GARO H C/O AGENUS INC. 3 FORBES ROAD LEXINGTON MA 02421 1 1 0 0 Chairman and CEO Common Stock 2019-12-17 4 J 0 66000 3.88 A 1362433 D Common Stock 2019-12-17 4 J 0 66000 3.88 D 1296433 D Common Stock 2019-12-19 4 J 0 195358 3.77 D 1101075 D Common Stock 163046 I See Footnote This line represents a new transaction that is being added to the Statement of Changes in Beneficial Ownership as originally filed. Represents a distribution from the Garo Armen 2018 2 Year AG GRAT. This line amends and restates Table 1, Line 4 of the Statement of Changes in Beneficial Ownership as originally filed to correct the amount of securities beneficially owned following the reported transaction. This line amends and restates Table 1, Line 5 of the Statement of Changes in Beneficial Ownership as originally filed to correct the amount of securities beneficially owned following the reported transaction. This line amends and restates Table 1, Line 6 of the Statement of Changes in Beneficial Ownership as originally filed to correct the amount of securities beneficially owned following the reported transaction. Dr. Armen is trustee and has investment authority for the Garo Armen 2018 2 Year AG GRAT holder of 159,000 shares of Agenus common stock. Dr. Armen is Chairman of the Board of Managers and a member of Antigenics LLC ("Antigenics") which as of the date of this report owns 4,046 shares of Agenus Inc. common stock. Dr. Armen has a pecuniary interest in only a portion of the shares held by Antigenics and disclaims beneficial ownership to the extent of his pecuniary interest therein. /s/Evan D. Kearns, as Attorney-in-Fact for Garo H. Armen 2020-01-10