Official NY OCA attorney registration data · Updated 2026 Methodology Discipline records
Law firm

O'Melveny & Myers LLP

150 attorneys in the New York State Bar registry list this organization as their firm or employer.

About O'Melveny & Myers LLP

O'Melveny & Myers LLP is a law firm founded in 1885 that describes itself as an international firm with about 800 lawyers. Wikipedia lists its headquarters in Los Angeles and its offices in California, Washington, D.C., New York City, Texas, and several cities in Asia and Europe. The firm's work spans litigation, transactions, and regulatory matters, and its corporate group handles M&A, capital markets, energy project finance and development, restructuring, corporate finance, tax, and fund formation. Its stated client base includes financial institutions, energy companies, airlines, life-sciences companies, and international manufacturers.

The firm's website lists its New York office at 1301 Avenue of the Americas, Suite 1700, New York, NY 10019, while some directories list Times Square Tower, 7 Times Square, as the address. The New York litigators work on commercial disputes, securities and financial institution litigation, white collar defense and regulatory enforcement, intellectual property, data privacy and cybersecurity, labor and employment, insurance litigation, antitrust, and appellate matters. The firm's own at-a-glance material lists offices in Austin, Century City, Dallas, Houston, Los Angeles, Newport Beach, New York, San Francisco, Silicon Valley, Washington, D.C., Beijing, Brussels, Hong Kong, London, Seoul, Shanghai, Singapore, and Tokyo.

TypeLaw firm
New York officesNew York, NY
Phone212-326-2000
Websiteomm.com
Registered NY attorneys150

Practice areas

Areas of work that O'Melveny & Myers LLP describes on its own website. They describe the organization as a whole, not the practice of any individual attorney listed below.

Appeals Antitrust & Competition Bankruptcy & Restructuring Commercial Litigation Corporate & M&A Employment & Labor Energy & Infrastructure Government & Regulatory Insurance Intellectual Property Privacy & Cybersecurity Securities & Capital Markets Tax White Collar & Investigations

Organization profile based on its official website and public sources (reviewed October 29, 2026). Attorney list from the New York State Unified Court System registration data. Not affiliated with O'Melveny & Myers LLP.

Registered attorneys

Mark Mosley Admitted 1987 · San Francisco, NY Suspended Helen Macdonald Admitted 1989 · London, NY Suspended Michael Rosenthal Admitted 1997 · Los Angeles, NY Suspended Robert - Paul Sagner Admitted 2001 · Washington, NY Suspended Andrew Frackman Admitted 1982 · New York, NY Currently registered John Rapisardi Admitted 1983 · New York, NY Currently registered Ulrich Wagner Admitted 1984 · New York, NY Suspended Junaid Chida Admitted 1984 · New York, NY Currently registered Jeffrey Kohn Admitted 1985 · New York, NY Currently registered Jonathan Rosenberg Admitted 1985 · New York, NY Currently registered
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Registration status can change at any time. Confirm any attorney's current status through the official New York Attorney Search.

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