Form 3 Filing for Jeffrey E. Shellebarger

This filing is a Form 3, which reports initial beneficial ownership of securities. Jeffrey E. Shellebarger, a director at DEVON ENERGY CORP/DE (DVN), has reported owning 10 shares of common stock. The filing was made on May 11, 2026, with the reporting period ending on May 7, 2026. A power of attorney document is included, appointing specific individuals to act on behalf of Mr. Shellebarger for executing and filing SEC forms, including Forms 3, 4, and 5, and managing his EDGAR account. This power of attorney supersedes any previous similar arrangements and remains in effect until revoked in writing.