Dan Siegfried has served as Vice President, Rockies Commercial Development, for Western Midstream since March 2025. He previously served as Senior Director, Rockies Commercial, starting in 2024. 

Mr. Siegfried has more than 25 years of experience spanning the upstream, midstream, and downstream sectors in the energy industry. Over his career, Mr. Siegfried has held a variety of increasing roles and responsibilities in pipeline integrity, operations, gas management, marketing, facilities engineering, and commercial development with Williams, WPX Energy, Anadarko Petroleum, and Occidental. 

Mr. Siegfried holds a Bachelor of Science in Chemical and Petroleum Refining Engineering from the Colorado School of Mines. He is a graduate of the Executive Leadership Institute for Technical Professionals and Engineering program from the University of Tulsa.