Jennifer Buell Awarded 305,000 Stock Options at Agenus Inc.

Jennifer Buell, Chairman of the Executive Counsel at Agenus Inc., was awarded 305,000 stock options on April 24, 2026, as reported in this Form 4 filing. The award consists of two grants: 300,000 options and 5,000 options, both with an exercise price of $3.90 per share and an expiration date of April 24, 2036. The options were granted under the Agenus Inc. 2019 Amended and Restated Equity Incentive Plan and vest over three years, with one-third vesting on April 24, 2027, and the remaining balance vesting in equal quarterly installments thereafter. The transaction represents a standard equity compensation award to an executive officer and director, with no purchase price paid for the options. The filing was signed by Austin Charette as Attorney-in-Fact for Jennifer Buell on April 28, 2026.