DEVON ENERGY CORP/DE

We are involved in various legal proceedings incidental to our business. However, to our knowledge as of the date of this report and subject to the environmental matters noted below, there were no material pending legal proceedings to which we are a party or to which any of our property is subject. For more information on our legal contingencies, see Note 18 in “Item 8. Financial Statements and Supplementary Data” of this report.

Environmental Matters

Devon has elected to use a $1 million threshold for disclosing certain proceedings arising under federal, state or local environmental laws when a governmental authority is a party. Devon believes proceedings under this threshold are not material to Devon’s business, financial condition and results of operations.

On April 7, 2020, WPX Energy, Inc., a wholly-owned subsidiary of the Company, received a notice of violation (“NOV”) from the EPA relating to specific historical air emission events occurring on the Fort Berthold Indian Reservation in North Dakota. On July 22, 2022, we received an updated NOV from the EPA relating to the same underlying events. On June 4, 2021, we received a NOV from the EPA relating to alleged air permit violations by WPX Energy Permian, LLC, a wholly-owned subsidiary of the Company, during 2020 in western Texas. On February 1, 2023, we received a NOV from the EPA relating to alleged air permit violations by WPX Energy Permian, LLC during 2020 in New Mexico. On June 1, 2023, we received a NOV from the EPA relating to alleged air permit violations by Devon Energy Production Company, L.P., a wholly-owned subsidiary of the Company, during 2020 and 2022 in New Mexico. On August 28, 2025, we received a NOV from the EPA relating to alleged air permit violations by Devon Energy Production Company, L.P. and WPX Energy Permian, LLC during 2024 in New Mexico and western Texas. The Company has been engaging with the EPA to resolve each of these matters, which remain ongoing, and management cannot predict their ultimate outcome; however, resolution of each of these matters may result in a fine or penalty in excess of $1 million. For more information on the North Dakota NOV matter with the EPA, see Note 18 in “Item 8. Financial Statements and Supplementary Data” of this report.