William D. Sullivan

Mr. Sullivan has been a director of SM Energy since 2004 and served as Chairman of the Board from 2009 to 2023. Mr. Sullivan currently serves as a member of the Compensation Committee and the Environmental, Social and Governance Committee.

Mr. Sullivan is a retired oil and gas executive who was with Anadarko Petroleum Corporation for more than 20 years, from 1981 to August 2003. While at Anadarko, Mr. Sullivan served in several roles including Executive Vice President, Exploration and Production, Vice President, Operations-International, Gulf of Mexico, and Alaska, Vice President-International Operations, Vice President-Algeria, and Vice President-U.S. Onshore Operations.

Mr. Sullivan also served as the Non-executive Chairman of the Board of Tetra Technologies, Inc. (NYSE: TTI), an oil and gas services company, from May 2015 to May 2022. From June 2011 to January 2021, Mr. Sullivan was a director and member of the audit committee of CSI Compressco Partners GP, Inc., which is the general partner of CSI Compressco, L.P. (NASDAQ: CCLP). CSI Compressco GP, Inc. is a minority-owned subsidiary of Tetra Technologies, Inc. Mr. Sullivan served as a director of Legacy Reserves GP, LLC, which was the general partner of Legacy Reserves LP (NASDAQ: LGCY), a limited partnership focused on the acquisition and development of producing oil and natural gas properties, from March 2006 to September 2018. Mr. Sullivan was a director of Targa Resources GP LLC, the general partner of Targa Resources Partners LP (NYSE: NGLS), from February 2007 until May 2015.