Form 4 Filing for Thomas L. Harrison at Agenus Inc.

This Form 4 filing details a transaction by Thomas L. Harrison, a director at Agenus Inc. On April 24, 2026, Mr. Harrison was granted 122,500 stock options with an exercise price of $3.90 per share. These options are part of the Agenus Inc. 2019 Amended and Restated Equity Incentive Plan and vest one year after the grant date, on April 24, 2027. The options are exercisable until April 24, 2036. This transaction is classified as an acquisition of securities under a compensatory plan. Mr. Harrison acquired these options directly, and following this transaction, he holds 122,500 shares underlying these options.