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

Sean Reynolds O'Brien

Currently registered

Sean Reynolds O'Brien is an attorney admitted to the New York State Bar in 1995, with a registered practice address in New York, New York. According to the New York Office of Court Administration, the current registration status on record is Currently registered.

Registration number2703403
Bar statusCurrently registered
Year admitted1995
Judicial departmentDepartment 3
Law schoolNew York University School of Law
Practice cityNew York, NY
CountyNew York
Firm / organizationO Brien Llp
Office address900 3Rd Ave, 18Th Floor, New York, NY, 10022
Phone(917) 207-7132
Next registration dueJul 2027

About O'Brien LLP

O'Brien LLP is a New York law firm, and directory listings place its office in Manhattan. Its own website describes a practice built around complex commercial litigation, regulatory defense, employment and trade secret disputes, and white-collar criminal defense. The firm's attorneys are said to have extensive experience defending corporations and their principals in private actions under the federal securities laws.

Practice areas of O'Brien LLP:

Commercial Litigation White Collar & Investigations Employment & Labor Government & Regulatory Securities & Capital Markets

These are the practice areas the organization describes on its website. They are not a statement about Sean Reynolds O'Brien’s own practice or any specialty certification.

View the O'Brien LLP profile and its 6 registered attorneys →

Office location

Registered office address on file with the New York State Bar. Verify before visiting, as the address reflects the contact on record and may be a firm rather than a personal office.

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Bar status can change at any time. For the authoritative, real-time status of Sean Reynolds O'Brien, confirm directly through the official New York Attorney Search using the registration number above. This record is republished from public New York State data and is provided for reference only — it is not legal advice and not an endorsement.

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