Guy Halgren is Chair Emeritus of Sheppard Mullin, having served as the firm’s Chairman from 2001-2021. During his tenure as Chairman, Guy oversaw the strategic growth of Sheppard Mullin to meet the needs of its clients. Under his leadership, the firm grew from 290 attorneys to over 1000 across the globe, with new offices that opened in Brussels, Century City, Chicago, Dallas, London, New York, North County San Diego, Silicon Valley, Seoul, Shanghai, and Washington, D.C. Resident in the San Diego office, Guy continues to support the firm’s strategic growth initiatives and client relationships.



Best Lawyer in America, Best Lawyers, 2018-2024

San Diego Super Lawyer, 2015-2020

Recipient of Sheppard Mullin's Fifth Annual Diversity & Inclusion Award, 2014

Law Firm Leader of the Year, Daily Journal, 2011

Innovative Managing Partner, Law360, 2010

Managing Partner A-List, Los Angeles Daily Journal, 2009

The Daily Transcript, San Diego's 2009 "Top Influentials"

Legal 500 US, Employment Law Counseling, 2007

Southern California Super Lawyer, 2007-2014


Media Mentions



Member, The Wall Street Journal CEO Council, 2018-2020


J.D., University of California, Los Angeles, 1984, graduated fifth in his class, Order of the Coif

B.A., University of California, Davis, 1977, with honors


  • Externed for the Honorable Gordon Thompson, Jr., U.S. District Court Judge, in San Diego during 1983


  • California
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