Power of Attorney for SEC Filings

This filing documents a Power of Attorney granted by Blake A. Sirgo, EVP of Operations at DEVON ENERGY CORP/DE, to Adam M. Vela, Marcus G. Bolinder, Christopher J. Kirt, and Edward T. Highberger. The attorneys-in-fact are authorized to execute and file Forms 3, 4, and 5 with the SEC on behalf of Mr. Sirgo, enabling him to comply with Section 16(a) of the Securities Exchange Act of 1934. This includes actions related to EDGAR system enrollment, obtaining necessary codes, and managing his filing account. The Power of Attorney is effective as of May 7, 2026, and supersedes any previous similar authorizations. It remains in effect unless revoked in writing.