144 0001704328 XXXXXXXX LIVE 0001090012 DEVON ENERGY CORP/DE 001-32318 THREE MEMORIAL CITY PLAZA 840 GESSNER ROAD, SUITE 1400 HOUSTON TX 77024 4055523333 Ritenour Jeffrey L Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

70029 3267559.82 621400000 05/11/2026 NYSE Common 11/29/2014 Restricted Stock Vesting Issuer N 1927 11/29/2014 Compensation Common 12/01/2014 Restricted Stock Vesting Issuer N 1037 12/01/2014 Compensation Common 12/02/2014 Restricted Stock Vesting Issuer N 1145 12/02/2014 Compensation Common 03/01/2019 Restricted Stock Vesting Issuer N 3981 03/01/2019 Compensation Common 02/10/2021 Restricted Stock Vesting Issuer N 7715 02/10/2021 Compensation Common 02/10/2022 Restricted Stock Vesting Issuer N 25928 02/10/2022 Compensation Common 02/10/2023 Restricted Stock Vesting Issuer N 21698 02/10/2023 Compensation Common 02/10/2025 Restricted Stock Vesting Issuer N 3425 02/10/2025 Compensation Common 02/10/2015 Restricted Stock Vesting Issuer N 3173 02/10/2015 Compensation Y 05/11/2026 /s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jeffrey L. Ritenour