X0306 4 2014-02-14 0 0001098972 AGENUS INC AGEN 0001597158 Stein Robert Benjamin C/O AGENUS INC. 3 FORBES ROAD LEXINGTON MA 02421 0 1 0 0 Chief Scientific Officer Stock Option, Right to Buy 3 2014-02-14 4 A 0 200000 3 A 2015-02-14 2024-02-14 Common Stock 200000 200000 D This option was awarded on 2/14/2014 under the Agenus Inc. 2009 Equity Incentive Plan, as amended ("2009 EIP") subject to forfeiture if shareholder approval of an amendment to the 2009 EIP and an amendment to the Agenus Inc. Amended and Restated Certificate of Incorporation (as amended) to increase the number of shares authorized for issuance thereunder, is not obtained at the Agenus Inc. 2014 annual shareholders' meeting. This options vests annually over three years beginning 2/14/2015. Christine M. Klaskin, by Power of Attorney 2014-02-19