Power of Attorney for Arthur L. Valdez Jr. of Impinj Inc.

The filing is a Power of Attorney document for Arthur L. Valdez Jr., a director of Impinj Inc. The document appoints Yukio Morikubo and other attorneys and paralegals of Wilson Sonsini Goodrich & Rosati, Professional Corporation, as Valdez's attorneys-in-fact. These attorneys are authorized to complete and execute Forms ID, 3, 4, and 5, as well as other necessary forms and amendments related to Section 16 of the Securities Exchange Act of 1934. The Power of Attorney remains in effect until Valdez is no longer required to file these forms, unless revoked earlier in writing. The document was executed on October 21, 2025.