Skip to main content

Jennifer Tomsen focuses on litigation and arbitration, including employment, commercial, and securities, litigation in state and federal courts and arbitrations before the Financial Industry Regulatory Authority (FINRA), AAA, and JAMS. She has defended broker-dealers in member-member disputes, including claims of racial, religious, disability, and sexual orientation discrimination, retaliation, whistleblowing, selling away, and U-5 defamation. Her representations have also included defending broker-dealers in customer disputes and regulatory matters. In addition, Jennifer has represented clients in a wide variety of commercial disputes.


  • Employment litigation
  • Commercial litigation
  • Securities arbitration, litigation, employment, and regulatory matters



Employment Cases

  • Represented broker-dealers in numerous employment matters, including claims of:
    • gender, race, and disability discrimination
    • retaliation
    • whistleblowing
    • U-5 defamation
    • wrongful termination, and
    • constructive discharge
  • Participated in defense of major healthcare company in independent contractor misclassification FLSA collective action.

Securities Cases

  • Represented major broker-dealers and other securities industry participants in numerous arbitration hearings before the Financial Industry Regulatory Authority (formerly the National Association of Securities Dealers and the New York Stock Exchange) and JAMS in a wide variety of customer claims including suitability, selling away, and misrepresentation claims.
  • Represented investment firms in scores of customer arbitrations involving allegations of research analyst conflicts of interest.
  • Represented a major investment firm in significant cases involving stock options brought by former WorldCom employees.
  • Represented major investment firms in customer arbitrations involving a variety of securities, including high-yield bond funds, corporate bonds, and preferred stocks.

Commercial Litigation

Representations include:

  • Prosecution of claims by government contractor for disaster recovery project monies owed arising out of Hurricane Ike.
  • Defense of record company in cases under Copyright Act, with multiple rulings upheld on appeal.
  • Assisted in appeal of city’s claim of governmental immunity in multimillion dollar contract litigation.
  • Defense of project management company in AAA arbitration against claims for breach of contract and fraud.
  • Coordinating matter for national client in which Greenberg Traurig attorneys around the country provide advice about the impact of COVID-related developments on the client's business.

Pro Bono Matters

  • Obtained permanent residency for multiple pro bono child clients through Kids In Need of Defense.
  • Obtained T-Visa for pro bono client as victim of human trafficking.
  • Representing client seeking asylum following persecution in his home country based on sexual orientation.
  • Representing client seeking citizenship through marriage.
  • Participating in Survivor's Project, assisting survivors of trafficking or domestic violence in obtaining clemency.

Recognition & Leadership

  • Greenberg Traurig Pro Bono Shareholder of the Year (co-winner), 2020 
  • Listed, Super Lawyers magazine, Texas Super Lawyers, 2017-2018
  • Team Member, U.S. News - Best Lawyers®, Best Law Firms Edition, "Law Firm of the Year," Environmental Law, 2016
  • Co-Coordinator, GT Houston Pro Bono Program
  • Member, GT's Diversity and Justice Initiative
  • Pro Bono work with multiple organizations, representing clients in obtaining special immigrant juvenile status, asylum, and T-visas for victims of human trafficking
  • Council Member, HBA Securities Litigation and Arbitration Law Section
  • Founding Member, Kids in Need of Defense (KIND) Houston Advisory Committee
  • Advisory Board Member, Tahirih Justice Center
  • Nominating Committee Member and Fellow, Texas Bar Foundation
  • Member, American Bar Association, State Bars of Texas and Florida, Houston Bar Association
  • Member, Garland R. Walker American Inn of Court
  • Member, Southeastern Women in Financial Services


  • J.D., magna cum laude, Duke University School of Law, 2002
    • Editor-in-Chief, Duke's Alaska Law Review
    • Moot Court Board
    • Order of the Coif
  • Ph.D., Environmental Policy, The Ohio State University, 1997
  • M.S., Environmental Communications, The Ohio State University, 1994
  • B.S., Biology, Cornell University, 1992
  • Florida
  • Texas
  • U.S. Court of Appeals for the Fifth Circuit
  • U.S. Court of Appeals for the Eleventh Circuit
  • U.S. District Court for the Eastern District of Texas
  • U.S. District Court for the Middle District of Florida
  • U.S. District Court for the Northern District of Texas
  • U.S. District Court for the Southern District of Florida
  • U.S. District Court for the Southern District of Texas
  • U.S. District Court for the Western District of Texas