On January 17, 2024, Jeremy Humphers notified Devon Energy Corporation that he will retire as Senior Vice President and Chief Accounting Officer of the Company effective March 8, 2024. In connection with Mr. Humphers? retirement, on January 23, 2024, the Board of Directors of the Company appointed John Sherrer to succeed Mr. Humphers as the Vice President, Accounting and Controller of the Company and designated Mr. Sherrer as the principal accounting officer of the Company, in each case effective upon Mr. Humphers?

retirement. Mr. Sherrer, 43, joined the Company in 2011 and has served in various accounting roles of increasing responsibility. He most recently served as the Director, Financial Accounting of the Company.

Prior to that role, Mr. Sherrer served in other accounting roles at the Company, including Accounting Manager, Financial Analysis and Reporting and Financial Accounting Supervisor, Accounting Policy from 2011 to 2023. From 2004 to 2010, Mr. Sherrer worked at KPMG LLP in audit. Mr. Sherrer graduated from Oklahoma State University in 2004 with Bachelor?s and Master?s of Science degrees in Accounting and is a certified public accountant.