Kevin J. Lesinski

Attorney Profile

Top Rated Securities Litigation Attorney in San Francisco, CA

Seyfarth Shaw LLP
 | 560 Mission Street, Suite 3100
San Francisco, CA 94105
Phone: 415-544-1083
Fax: 415-397-8549
Selected To Super Lawyers: 2004, 2006, 2014 - 2019
Licensed Since: 1983
Education: Harvard Law School
Practice Areas:
  • Securities Litigation (50%),
  • Intellectual Property Litigation (30%),
  • Business Litigation (20%)
Attorney Profile

Kevin Lesinski is a partner in Seyfarth Shaw LLP’s Litigation Department and is Co-Chair of the firm’s national Securities, Financial and Directors & Officers Litigation Practice Group.  He is recognized as one of the country’s leading securities, trade secrets, ERISA and business litigators.  With over 35 years of experience, Mr. Lesinski concentrates his practice on securities litigation, trade secrets, intellectual property, internal corporate investigations, accountant liability, False Claims Act, health care fraud, ERISA, employee benefits and business litigation.

In 2016, Mr. Lesinski was honored to be selected as a Fellow of the Litigation Counsel of America, a national trial lawyer honorary society, and since then has remained an active Fellow.  Mr. Lesinski was selected by Law & Politics as a Northern California Super Lawyer in 2018 and for the previous four years.  He also has been recognized in The Legal 500 for Securities Litigation Defense and ERISA Litigation.

A trusted advisor to technology companies, corporate officers and directors, private equity firms, commercial and investment banks, accounting firms, ERISA plans and insurance companies, Mr. Lesinski has successfully represented his clients in high profile “bet the company” cases and crises.  A leader in the business community for many years, Mr. Lesinski has served as a member of the Board of Directors of the San Francisco Chamber of Commerce and the Greater Boston Chamber of Commerce.  He is a member of the Board of Directors of the Hawaii International Hope Foundation and is active in many civic, charitable and cultural organizations.  He served as Chair of the Harvard Law School Association Committee of Five, responsible for appointing members to the HLSA Council.

A frequent speaker on panels and seminars, Mr. Lesinski has reached a broad audience on topics including cybersecurity, data breach preparedness and response, internet litigation, corporate governance, securities litigation, whistleblowers, SEC investigations and  enforcement, accountant liability and internal corporate investigations.  Mr. Lesinski is co-author of a Thomson Reuters book entitled “New Developments in Securities Litigation.”  He is a member of the Litigation Section of the American Bar Association and a member of the Bar Association of San Francisco.

Practice Areas
  • 50%Securities Litigation
  • 30%Intellectual Property Litigation
  • 20%Business Litigation
Focus Areas


Selected to Super Lawyers for 8 yearsbottom-image

Super Lawyers: 2004, 2006, 2014 - 2019

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About Kevin Lesinski

Admitted: 1983, California

Professional Webpage:


  • Litigation Counsel of America, Fellow

Special Licenses/Certifications:

  • Certified Lean Six Sigma Yellow Belt

Bar/Professional Activity:

  • Harvard Law School Association
  • State Bar of Michigan, Litigation Section
  • State Bar of California, Litigation Section
  • Boston Bar Association, Litigation Section
  • American Bar Association, Litigation Section
  • Diversity Law Institute, Member
  • Trial Law Institute, Member
  • U.S. District Court for the District of Connecticut
  • U.S. District Court for the Eastern District of Michigan
  • U.S. District Court for the District of Massachusetts
  • U.S. District Court for the Southern District of California
  • U.S. District Court for the Northern District of California
  • U.S. District Court for the Central District of California
  • U.S. Court of Appeals for the Ninth Federal Circuit
  • U.S. Court of Appeals for the Sixth Federal Circuit
  • Michigan
  • U.S. Court of Appeals for the First Federal Circuit
  • California
  • Massachusetts

Scholarly Lectures/Writings:

  • *Chapter author, "New Developments in Securities Litigation," published by Aspatore Books, Thompson Reuters (2012 Ed.) *Chapter author, "New Developments in Securities Litigation," published by Aspatore Books, Thompson Reuters (2011 Ed.)  
  • Co-Author, "Decisions of Interest for Corporate and Transactional Lawyers," Securities and Corporate Governance Litigation Quarterly Newsletter, Seyfarth Shaw LLP (October 8, 2014)


  • Representative Engagements:  M&A Litigation.  Lead counsel for former directors and officers of San Francisco biometrics pioneer Solidus Networks in litigation brought in San Francisco Superior Court by owner of company acquired by Solidus prior to Solidus’ Chapter 11 bankruptcy filing.  Obtained dismissal of all fraud causes of action without leave to amend.  Settled case on very favorable terms shortly thereafter.  Successfully obtained good faith settlement bar.  Auction Rate Securities Litigation.  Lead counsel for health care industry financial advisor Kaufman, Hall & Associates, Inc. in action brought in Orange County, CA Superior Court by hospital district client that issued auction rate securities.  Settled on extremely favorable terms after demurrer was sustained.  Successfully obtained good faith settlement bar.  Shareholder Litigation.  Lead counsel for former officers and directors of Pay By Touch in five cases brought in San Francisco Superior Court by shareholders alleging securities fraud.  Following extensive discovery, settled each of the cases on very favorable terms.  Successfully obtained good faith settlement bar.  Health Care Fraud Litigation.  Lead counsel for ILWU-PMA Welfare Plan in health care fraud case against surgery center and plastic surgeon.  Obtained summary judgment on all claims and counterclaims, and an award of over $800,000 in attorneys’ fees.  Antitrust.  Lead counsel for financial services company in FTC antitrust investigation.  Investigation was concluded with no action taken by the FTC.  Private Equity.  Lead counsel for San Francisco-based private equity firm in litigation brought by minority shareholder in portfolio company following “cram down” financing.  Shortly after I defended my client’s principal, Bill Hambrecht, at his deposition, the case settled on very favorable terms.  Securities Fraud Litigation.  Lead counsel for former corporate officer and director of Felt Manufacturing Company in adversary proceeding in New Hampshire Bankruptcy Court.  Obtained very favorable settlement with all claims against client dismissed with prejudice.   .  Lead counsel for Big Four accounting firm in fraud and negligence action brought by former client.  Following three years of protracted litigation, obtained partial summary judgment.  Remaining claims were tried to a jury, resulting in a complete defense verdict.  Defamation, Malicious Prosecution and Tortious Interference.  Lead counsel for Allstate Insurance Company in high profile defamation, malicious prosecution and tortious interference case brought by former president of body shop owners trade organization who was arrested in sting operation.  Obtained summary judgment for Allstate on all counts shortly before trial.  SEC Investigation.  Lead counsel for international professional services firm in SEC investigation.  After senior partner of client received a Wells notice, defended numerous depositions and made Wells submission.  The Commission reversed the Regional SEC Director’s recommendation and declined to pursue an enforcement action.  Mutual Fund Market Timing.  Lead counsel for Sun Life Financial in ERISA class action alleging damages caused by market timing at Sun Life’s subsidiary, MFS.  Case dismissed before completion of discovery phase.  Tax Strategy Litigation.  Lead counsel for KPMG in case brought by former client alleging fraud in connection with tax strategy recommended to client.  Obtained complete dismissal of case.  Options Backdating Litigation.  Represented KLA-Tencor in litigation against the company’s former CEO over alleged options backdating.  Case settled after extensive discovery.  International Arbitration.  Lead counsel for long-standing client Mediaspectrum in federal court litigation and international arbitration against UK-based minority shareholder over corporate governance and control issues.  Cases settled on very favorable terms.  Parallel Foreign Litigation.  Lead counsel in the United States for officer and director of SAGEM N.A. in a securities fraud case brought in New York.  Coordinated with French counsel in parallel action brought in France and obtained complete dismissal of New York action. 10b-5 Class Action.  Represented officers and directors of multi-national publicly traded software company in a securities fraud class action alleging improper revenue recognition.  Case settled on very favorable terms.  State Department of Revenue Investigation.  Lead counsel for Big Four accounting firm in investigation by Massachusetts Department of Revenue.  Investigation concluded with no action against the firm.  Domicile/State Tax.  Lead counsel for client in case brought by Massachusetts Commissioner of Revenue challenging client’s change of domicile to Florida.  Obtained complete defense verdict at trial.  Intellectual Property/M&A.  Represented KLA-Tencor in trade secret case brought by competitor, ADE.  Successfully defeated ADE’s motion for preliminary injunction.  Following successful resolution of litigation, KLA-Tencor acquired ADE.  10b-5 Class Action.  Lead counsel for Big Four accounting firm in 10b-5 action brought by shareholders of financial services client.  Case settled on very favorable terms.  Project Finance.  Represented bond fund trustee in litigation challenging the validity of bonds worth $500,000,000 issued to fund the construction and operation of the Seabrook Nuclear Power Plant.  Won at trial court level on summary judgment.  Decision affirmed by the Massachusetts Supreme Judicial Court.  False Claims Act/Internal Investigation.  Lead counsel for Big Four accounting firm in internal investigation conducted following filing of False Claims Act litigation against firm’s banking client.

Representative Clients:

  • Pacific Maritime Association; Kaufman, Hall & Associates, Inc.; KPMG; Mediaspectrum; ILWU-PMA Welfare Plan.

Educational Background:

  • University of Arizona, Honors and Highest Distinction, Graduated Phi Beta Kappa, B.A., 1980

Industry Groups

  • Technology;Private Equity;Banking;Accounting;Insurance;ERISA Plans;Health Care;Financial Serv
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Office Location for Kevin J. Lesinski

560 Mission Street
Suite 3100
San Francisco, CA 94105

Phone: 415-544-1083

Fax: 415-397-8549

Kevin J. Lesinski:

Last Updated: 1/21/2020

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