Guy Halgren is a partner in the firm's San Diego office. While Guy was Chairman from 2001-2021, Sheppard Mullin has grown strategically to meet the needs of its clients. He grew the firm from 292 attorneys to over 1000 attorneys. Under his leadership, the firm opened offices in Brussels, Century City, Chicago, Dallas, London, New York, North County San Diego, Palo Alto, Seoul, Shanghai and Washington, D.C.



Best Lawyer in America, Best Lawyers, 2018-2022

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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