Power of Attorney for Brian C. Stephenson

This filing details a Power of Attorney granted by Brian C. Stephenson, Chief Financial Officer of Faeth Therapeutics, Inc., to Christopher Gerry and Josiah Craver. The attorneys-in-fact are authorized to execute and submit SEC Forms 3, 4, and 5 on behalf of Mr. Stephenson, pertaining to his officer role and beneficial ownership of company securities. This authorization includes preparing, filing, and taking any necessary actions related to these forms, as well as handling any amendments. The Power of Attorney remains effective until Mr. Stephenson is no longer required to file these forms, revokes it in writing, or the attorneys-in-fact are no longer employed by the company. The filing also notes a stock option grant to Mr. Stephenson, with 25% vesting on March 11, 2027, and the remainder vesting over 36 months, with full vesting by March 11, 2030, contingent on his continued service. The option's exercise price is $29.37, and it is for 166,435 shares of Common Stock, expiring on March 10, 2036.