Sean Muntz

Sean Muntz

Los Angeles, CA recognized lawyers icon Recognized in Best Lawyers since 2024
RMO LLP

3 Best Lawyers awards

RMO LLP logo

Awarded Practice Areas

Litigation - Trusts and Estates Trusts and Estates

Biography

Sean D. Muntz serves as Managing Partner of RMO LLP. Sean is an experienced trial and appellate lawyer, with litigation experience spanning a broad range of subject matters, including banking, general commercial, employment, probate, real estate, securities, intellectual property, maritime and environmental disputes. Sean has litigated matters in state and federal courts throughout California, and in alternative dispute resolution forums, including AAA and JAMS, and before the NASD/FINRA and Pacific Stock Exchange.

Sean’s practice focuses on representing beneficiaries, professional and corporate fiduciaries (administrators, executors, trustees, conservators, and guardians) in contested trust, estate and probate litigation.

Sean previously was a partner at an international law firm in the firm’s commercial litigation group, where he represented international financial institutions in litigation matters.

Sean worked as in-house counsel for a Fortune 100 aerospace manufacturer. There, he represented the company in internal and external investigation and compliance matters. While there, Sean represented the company as a victim of espionage, in the criminal matter of U.S. v. Chung, in which the U.S. District Court handed down the first conviction under the Economic Espionage Act of 1996. For representing the company’s interests, Sean received a commendation from the Los Angeles Field Office of the FBI and the FBI Director.

Sean also has worked for a Fortune 100 financial institution as in-house counsel, where he managed and directed national litigation strategy, overseeing hundreds of cases.

RMO LLP

3 Best Lawyers awards

RMO LLP logo

Overview

  • University of Southern California, J.D., graduated 2002

  • California, 223549

  • Black Law Students Association at USC Gould School of Law - Former Member
  • Orangewood Foundation - Volunteer
  • Provisors - Member
  • California, 223549
  • Black Law Students Association at USC Gould School of Law - Former Member
  • Orangewood Foundation - Volunteer
  • Provisors - Member
  • University of Southern California, J.D., graduated 2002

Client Testimonials

Awards & Focus

Recognized in The Best Lawyers in America® 2026 for work in:
  • Litigation - Trusts and Estates
  • Trusts and Estates
Awards:
  • “Legal Visionaries”, Business of Law Magazine, Los Angeles Times, 2022

  • “Leaders of Influence: Litigators and Trial Lawyers”, Los Angeles Business Journal, 2022

  • “Orange County Visionary”, Los Angeles Times, 2024

  • “Super Lawyer”, Super Lawyers, Southern California Super Lawyers 2019-2025

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