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

Matthew Dennis Thornburg

Currently registered

Matthew Dennis Thornburg is an attorney admitted to the New York State Bar in 2020, 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 number5832456
Bar statusCurrently registered
Year admitted2020
Judicial departmentDepartment 3
Law schoolUniversity of Michigan Law School
Practice cityNew York, NY
CountyNew York
Firm / organizationBrown Brothers Harriman
Office address140 Broadway, New York, NY, 10005
Phone(212) 483-1818
Next registration dueJun 2028

About Brown Brothers Harriman & Co.

Brown Brothers Harriman & Co. (BBH) is a financial services firm that operates as a private partnership. Its origins date to 1818, and the current firm was formed in 1931 through a merger of Brown Brothers & Co. and Harriman Brothers & Co. The firm organizes its work into two business lines. Investor Services covers custody, accounting, administration, capital market services and operating model solutions. Capital Partners covers wealth management, corporate advisory and banking, investment management and private equity.

Practice areas of Brown Brothers Harriman & Co.:

Banking & Finance

These are the practice areas the organization describes on its website. They are not a statement about Matthew Dennis Thornburg’s own practice or any specialty certification.

View the Brown Brothers Harriman & Co. profile and its 30 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 Matthew Dennis Thornburg, 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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