Photo of John P. Stigi III

John P. Stigi III

Century City
F: +1.310.228.3917
Silicon Valley
T: +1.650.815.2600
F: +1.650.815.2601


  • J.D., University of Virginia, 1987
  • B.A., Columbia University, 1984, cum laude
  • California
  • New York
  • U.S. Supreme Court
  • U.S. Courts of Appeals for the First, Second, Third, Fifth and Ninth Circuits
  • U.S. District Courts for the Central District of California, Northern District of California, Southern District of California, Eastern District of New York and Southern District of New York
Thought Leadership


John Stigi is a partner in the Business Trial Practice Group, leader of the firm's national Securities Enforcement and Litigation Team, and Office Managing Partner of the firm's Century City office.

Areas of Practice

John's practice focuses on securities class action and shareholder derivative action defense, SEC investigation defense, internal corporate investigations, complex contract and commercial litigation, and M&A and corporate governance litigation.  He has extensive experience representing issuers, officers, directors and auditors in all areas of securities, corporate and complex commercial litigation, from the early stages before a complaint is filed through pleading motions, discovery, mediation, trial and appeal.  John also advises companies on disclosure and corporate governance issues, as well as directors and officers insurance matters.

John’s practice is national in scope.  He appears in federal and state courts throughout California, New York and Delaware, and also has appeared in courts in Arizona, Colorado, Florida, Massachusetts, Mississippi, Nevada, New Jersey, Texas and Washington. John is a member of the AIG Securities Litigation Panel (class action approved).

John previously practiced in Silicon Valley and New York City where he represented issuers, accountants, banks, brokerage firms, and hedge fund managers in securities, commercial, bankruptcy, employment, and real estate litigation.  John clerked at the District of Columbia Court of Appeals and was an executive editor of the Virginia Journal of International Law.


Representative Cases

Securities & Shareholder Derivative Actions

  • Advanced Cell Technologies
  • Alternegy
  • America West
  • American Apparel
  • Amgen
  • Arthur Andersen
  • Axesstel
  • Axos Financial (f/k/a BofI Holding)
  • Boeing
  • Bolar/Circa Pharmaceuticals
  • Chordiant Software
  • Deer Consumer Products
  • Deloitte
  • Digital Cornerstone
  • Diodes
  • Ernst & Young
  • Fairchild Corporation
  • FAT Brands
  • First Virtual Communications
  • GEM Services, Inc. 
  • Hewlett Packard
  • i2 Technologies
  • International Rectifier
  • Irvine Sensors
  • Jennifer Convertibles
  • LBI Media Holdings
  • Leap Wireless
  • LifeVantage
  • Marvell Technologies
  • McAfee
  • National Technical Systems 
  • NCI Building Systems
  • NorthPoint Communications
  • Patriot National
  • PCM
  • Quovadx
  • Redback Networks
  • Sahlen & Associates
  • VISX
  • Zales

M&A/Going Private and Appraisal Actions

  • Corio
  • CrossWorlds Software
  • Dialogic
  • E.piphany
  • Electro Rent
  • Hewlett Packard/Compaq
  • Hewlett Packard/Walter Hewlett
  • HomeFed
  • Imperial Capital 
  • Informa
  • Infoweapons
  • International Rectifier
  • Kreisler/United Flexible
  • Lions Gate Entertainment
  • Med BioGene
  • National Technical Systems
  • Parametric Sound
  • PCM
  • Physicians Formula
  • Plumtree Software
  • Rational Software
  • Raytel Medical
  • Rizvi Traverse/Playboy
  • Sport Chalet
  • Taylor Made/Adams
  • Taylor Made/Ashworth

Financial Services-Related Actions

  • B. Riley
  • CIBC Oppenheimer
  • Citicorp Real Estate
  • Clearwater Fund
  • European American Bank
  • First Nationwide Bank
  • Hambro America
  • Imperial Capital
  • Liberty Brokerage
  • Moore Capital Management
  • Patriot Securities

Thought Leadership


Class Action Defense Strategy Law Blog Posts

Corporate & Securities Law Blog Posts

Speaking Engagements

  • Speaker & Panelist, Securities Litigation 2016: From Investigation to Trial, Practising Law Institute, New York, April 2016
  • Speaker & Panelist, Handling a Securities Case 2015: From Investigation to Trial and Everything in Between, Practising Law Institute, New York, April 2015
  • Speaker & Panelist, Director & Officer Liability and Insurance - Hot Topics and New Developments, USC Corporate Governance Summit, Los Angeles, November 2014
  • Speaker & Panelist, When Good Deals Go Bad - How to Avoid Becoming an M&A Casualty, Association for Corporate Growth San Diego, December 2012
  • Chair, Delaware Counsel Speaks: Navigating Delaware Corporate Law in Transactions, San Diego, September 2011
  • Speaker, SEC Enforcement and Securities Class Action Trends Since the Great Recession of 2008, U.S. Law Firm Group Corporate & Securities Committee Section Meeting, San Francisco, May 2010
  • Q&A With Sheppard Mullin's John P. Stigi III, Law360, July 16, 2009
  • Speaker, Deconstructing Ryan v. Gifford, Cal CPA Fraud Section, Los Angeles, February 2008
  • Speaker, Environmental Disclosures, Los Angeles County Bar Association, Los Angeles, February 2008
  • Speaker & Panelist, Securities Litigation, CLE International Conference on Class Actions, San Francisco, January 2008
  • Co-chair, CLE International Conference on Class Actions, Los Angeles, January 2007
  • Podcast, Merrill Lynch v. Dabit, Blog, April 2006
  • Speaker & Panelist, McMaster World Congress Conference on Corporate Governance, Hamilton, Ontario, January 2006
  • Speaker, Washington Metropolitan Area Corporate Counsel Association, SEC Enforcement, Reston, VA, December 2005
  • Speaker & Panelist, International Bar Association Annual Conference, Prague, September 2005
  • Speaker & Panelist, InSight CLE, M&A Litigation, Vancouver, BC, April 2005
  • Speaker & Panelist, Glasser LegalWorks, Electronic Discovery, San Francisco, April 2004
  • Speaker, Venture Capital Task Force, Palo Alto, July 2002


  • AIG Securities Litigation Panel Counsel, 2012-present
  • American Bar Association, 1989-present
  • New York State Bar Association, Civil Practice Law and Rules Committee, 1996-1999
  • Los Angeles World Affairs Council, 2006-2009
  • University of Virginia School of Law National Litigation Panel, 1996-2000
  • Columbia University Alumni Representative Committee, Regional Co-Chair, 2007-present
  • Association of Business Trial Lawyers, 2016-present