Zachary Faigen

Mr. Faigen has represented clients in numerous matters, including:

• Paradigm Operations LP in multiple securities class actions centered around digital assets and blockchain protocols
• Airlines for America in a challenge to a City of San Francisco ordinance on constitutional and federal preemption grounds
• Rocket Lab USA, Inc. in a federal securities class action and follow-on derivative action after a stock drop following a short-seller report
• FirstEnergy Corp. in a putative shareholder class action alleging fraud and breach of contract
• Hawaiian Electric Industries, Inc. and certain of its current and former officers and directors in multiple shareholder derivative actions arising from the Lahaina wildfires in Maui
• a former executive of Beyond Meat, Inc. in a putative securities class action and related shareholder derivative action alleging false and misleading statements over a multiyear period
• Tower Semiconductor Ltd. in a patent and trade secret dispute in connection with semiconductor patents
• Keurig Dr. Pepper and American Bottling Co. in an alleged breach of contract action
• RTI Infrastructure, RTI Solutions and several of its executives in multijurisdictional litigation involving a variety of tort and contract claims
• a social media company in a case regarding audience targeting and machine-generated algorithms
• Centene Corporation in a:
  • putative class action arising out of an alleged data breach
  • federal securities class action and follow-on derivative action arising out of a corporate merger
• Credit Acceptance Corp. in an antitrust suit stemming from a patent dispute associated with computer programming and AI-related issues
• The Conrad N. Hilton Foundation in a probate action seeking to invalidate a $3 billion bequest to the charity
• PCF Insurance Services of the West, LLC in a fraud and breach of contract action arising out of an asset purchase agreement
• Cheetah Mobile Inc., a China-based mobile and computer applications developer, in multiple federal securities actions arising out of alleged misstatements related to a business dispute involving Google mobile ads
• Jumei International Holding Ltd. in a putative federal securities class action arising out of a take-private transaction
• Armstrong Flooring in a putativefederal securities class action
• several “Big Four” accounting firms in multiple actions involving claims arising out of alleged tax shelter activities
• Questcor Pharmaceuticals, Inc. (now Mallinckrodt Pharmaceuticals) in a federal securities class action

Mr. Faigen is committed to pro bono work, having represented clients in matters ranging from immigration defense to tenant eviction cases to First Amendment challenges.

In recognition of his work, the Los Angeles Business Journal honored Mr. Faigen as a Top Litigator and Trial Lawyer in Los Angeles in 2025. Additionally, he was named to Lawdragon’s 2025 500 X — The Next Generation list and has been repeatedly recognized as one of Best Lawyers’ Ones To Watch in America.