Kat E. Mateo

Kat E. Mateo


Olshan Frome Wolosky LLP

Recognized since 2024

New York, New York

Practice Areas

Litigation - Securities

Spinning circle Big letter B

Katherine Mateo is a skilled litigator with extensive experience in resolving complex, high-stakes commercial disputes for prominent companies and individuals.

For nearly a decade, Kat has helped clients navigate claims and investigations. From single-plaintiff cases to class actions, she has achieved favorable results at trial, on appeal, through arbitration, mediation and negotiated settlement.

Kat has handled a range of commercial disputes including those involving intellectual property, securities, fraud, breach of contract, white-collar defense, transactional matters, bankruptcy, antitrust, and toxic tort. She has prevailed in cases related to residential mortgage-backed securities and Foreign Corrupt Practices Act (FCPA) investigations, has steered clients through internal investigations, and successfully defended both individual and corporate clients in major cross-border criminal investigations.

Multinational companies, financial institutions, executives and directors, and high-net-worth individuals rely on Kat’s broad experience throughout all phases of litigation, from crafting pretrial strategies and settlements to trials, appeals, and alternative dispute resolution mechanisms. Working closely with her clients, she identifies pragmatic, cost-effective strategies that manage risk and align with each client’s business objectives and needs. With her clients’ goals front and center, she focuses on the critical issues at stake, positioning clients for successful outcomes at every case stage.

Clients praise Kat for her calm manner in stressful situations and frequent communication, informing them of all case and matter issues and developments. Known for her enthusiasm in practice and a long-standing commitment to diversity and inclusion, Kat previously served as the head of an affinity group for attorneys and staff members of color and is currently a member of Olshan’s Diversity & Inclusion Committee.

Before joining Olshan, Kat was a litigation associate at Morrison & Foerster. She is fluent in Spanish.

Contact & Links
Location
  • 1325 Avenue of the Americas, 15th Floor
    New York, NY 10019
Languages
  • Spanish
Education
  • Stanford University, J.D., graduated 2014
Affiliations
  • Dominican Bar Association - Member
  • New York City Bar Association - Member
Court Admissions
  • New York

Olshan Frome Wolosky LLP
Headquarters: New York, New York

8 The Best Lawyers in America® awards

3 Best Lawyers: Ones to Watch® in America awards

Best Law Firms Badge Visit Website View Firm Profile

Recognized in Best Lawyers: Ones to Watch® in America 2025 for work in:
  • Litigation - Securities
Awards:
  • Listed among the “40 Under 40 Rising Latino Stars” by The Hispanic Coalition NY, Inc.

Spinning circle Big letter B

Publications

Your browser is not fully compatible with our automatic printer friendly formatting.

Please use the print button to print this profile page.

Spinning circle Big letter B