Koji Fukumura


As an active litigator and public speaker, I stay on top of the legal, business and regulatory trends in order to counsel and defend my clients effectively.

Koji focuses on complex commercial litigation, including the defense of securities class actions, derivative suits, M&A-related class actions and government investigations. He also regularly conducts internal investigations for boards as well as their audit or special litigation committees. Chambers USA has noted Koji is “practical, business-savvy and strategic,” “has great advocacy skills” and has a “wonderful leadership presence.” Koji is a former member of the firm’s board of directors and a past chair of Cooley’s securities litigation practice. He is also a past chair of the American Bar Association’s Litigation Section.

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  • Koji Fukumura Speaking Engagements 

  • Defended 60+ Securities Class or Representative Actions 

  • Defended 40+ M&A Transactions 

  • Defended 75+ SEC and SRO Investigations or Inquiries 

  • Activision Blizzard Securities Suit Dismissed 

  • View all

An in-depth understanding of the legal issues and a practical approach to resolving matters. – Chambers USA

  • James E. Beasley School of Law Temple University
    JD, 1993

  • University of Colorado at Boulder
    BA, English Literature

  • University of Colorado at Boulder
    BA, Molecular, Cellular and Developmental Biology

Admissions & Credentials





  • American Bar Association

  • American Bar Foundation

  • American Business Trial Lawyers Association

  • American Inns of Court

  • Federal Bar Association

  • Japanese American National Museum

  • National Asian Pacific American Bar Association

  • Pan Asian Lawyers of San Diego

  • San Diego County Bar Association

  • Southwest Center for Asian Pacific American Law

  • Lawyers Committee for Civil Rights Under Law

Rankings & Accolades

    Best Lawyers in America: San Diego Lawyer of the Year for Securities Litigation (2013, 2019) and M&A Litigation (2012-2014; 2018, 2019, 2021)

    Best Lawyers in America: Commercial Litigation (2009-2022), Securities Litigation (2009-2022), Litigation – M&A (2012-2022), Litigation – Regulatory Enforcement (2012-2022), Mass Tort Litigation/Class Actions (2020-2022) and Bet-the-Company Litigation (2022)

    Chambers: Securities Litigation – California (2016-2022)

    Euromoney's Benchmark Litigation Guide of Leading Firms and Lawyers: Litigation Star (2010-2022), San Diego Lawyer of the Year (2019-2020)

    Legal 500: Securities Litigation – Defense (2016-2022); Key Lawyer – Healthcare: Life Sciences (2021)

    Southern California Super Lawyers: Top 50 Lawyers in San Diego (2009-2013, 2015-2022)

    Southern California Super Lawyers: Securities Litigation (2007-2022)