Lloyd Winawer, a partner in Goodwin's Securities Litigation and White Collar Defense groups, is recommended by The Legal 500 U.S. and recognized as a Northern California “Super Lawyer” for his work on complex litigation and arbitration with a focus on securities and investment-related disputes. His work includes shareholder class actions, derivative lawsuits, M&A litigation, internal investigations, government and regulatory investigations, and related proceedings. He also represents clients in matters involving claims for breach of contract, misrepresentation, and other business torts.

Mr. Winawer’s practice is national in scope. He has represented corporations and individual clients in more than 50 shareholder class action and derivative cases in federal and state courts throughout the country, including actions brought in Arizona, California, Colorado, Florida, Illinois, Massachusetts, Missouri, New York, Nevada, Texas and Utah. Mr. Winawer successfully obtained the dismissal with prejudice of the claims in several of these cases.





Mr. Winawer has represented clients in diverse industries, including apparel and clothing, financial services, film, life sciences, mining, mortgage lending, technology, transportation and venture capital. Representative clients include Countrywide Financial, Swift Transportation, America West Airlines, The North Face, Silicon Graphics, Celadon Group, Sigma Designs, SMART Modular, and Applied Biosystems.

Representative Matters



Securities Litigation
  • The nation’s largest mortgage lender in numerous federal and state securities actions arising out of the credit crisis.
  • Former chairman and CEO of one of the nation’s largest banks in federal and state court securities class action and derivative litigation arising out of highly publicized sales practices allegations.
  • Former chairman and CEO of multi-billion dollar government contractor in securities class action and derivative litigation arising out of municipal project billing scandal. All claims dismissed.
  • Audit committee of public company in DOJ criminal and SEC investigations related to $250 million, multi-year restatement.
  • Successful defense of publicly traded airline and its directors and officers in federal securities class action arising out of the then largest FAA fine related to alleged aircraft maintenance practices. Obtained dismissal of plaintiff’s core claims at summary judgment following Ninth Circuit reversal in part of district court decision dismissing all claims with prejudice.
  • Silicon Graphics and its directors and officers in leading case interpreting the Private Securities Litigation Reform Act of 1995 (In re Silicon Graphics Securities Litigation). Ninth Circuit affirmed dismissal of all claims.
  • The nation’s largest trucking company and its founder in securities class action and separate breach of fiduciary duty litigation related to going private transaction. All claims dismissed.
  • An investment bank affiliate as plaintiff in multi-million dollar action involving termination of derivative transactions.
  • Shareholder representatives in post-closing disputes involving alleged breaches of representations and warranties in acquisition agreements.
Arbitration Awards
  • The successful defense of multi-million dollar indemnification claims arising out of merger transactions and recovery of attorney's fees.
  • The successful defense of a stock option dispute involving alleged damages in excess of $50 million.
  • An award requiring a medical device manufacturer to fully indemnify an asset seller against multiple customer claims for breach of contract and fraud following the closing of an asset purchase agreement.
Professional Activities

Mr. Winawer is a member of the American and San Francisco Bar Associations and the Board of Governors of the Association of Business Trial Lawyers (Northern California).


Mr. Winawer was selected as a recommended lawyer by The Legal 500 U.S. for his Securities Litigation: Defense work in 2018, and for corporate investigations and white-collar criminal defense in 2019. He has also been selected as a Northern California “Super Lawyer” by Law & Politics magazine, and recognized by California Lawyer as one of California’s top 20 lawyers. While attending law school, he was the recipient of a Best Oral Advocate and Brief Writer Award in a national Moot Court competition.

In The News









J.D., 1989
New York University School of Law
B.A., 1985
Brandeis University

(magna cum laude, Phi Beta Kappa)



New York


U.S. District Court for the Central District of California
U.S. District Court for the Northern District of California
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Our clients rely on us for world-class advisory services, counsel on complex transactional work and high-stakes litigation. Specializing in matters involving the financial, life sciences, private equity, real estate, and technology industries, we use a collaborative, cross-disciplinary approach to resolve our clients’ most challenging issues. To find out more, please contact us.

Unsere Kunden verlassen sich auf unsere erstklassige Beratung, vor allem im Hinblick auf komplexe Transaktionen und High-Stakes-Prozesse. Spezialisiert auf Angelegenheiten der Finanz-, Life-Sciences-, Private-Equity-, Immobilien-und Technologie-Branchen, verwenden wir einen kooperativen und interdisziplinären Ansatz, um Fragen unserer Kunden auch in extremen Spezialsituationen einer Lösung zuzuführen. Sie wollen mehr erfahren? Kontaktieren Sie uns gerne.

Nos équipes interviennent aux côtés de nos clients, industriels, fonds d’investissement, startups, institutions financières et dirigeants, dans le cadre de transactions et de contentieux complexes, et apportent des conseils de tout premier plan dans les secteurs financiers, des Sciences de la Vie, du Private Equity, de l’immobilier et des technologies. Nous traitons les dossiers juridiques de manière intègre, ingénieuse, souple et audacieuse pour répondre efficacement aux enjeux propres à chacun de nos clients, quels que soient la taille de l’opération et le secteur d’activité. Pour en savoir plus, contactez-nous.


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