as of 8/23/2026 8:24:01 PM

Donal Maurice O'Brien

Arnold & Porter
300 North LaSalle Drive Suite 3500
Chicago, Illinois 60654

(312) 583-2300

Donal.OBrien@arnoldporter.com

Date Admitted

November 05, 1998

Illinois Registration Status

Active and authorized to practice law

Malpractice Insurance

In annual registration, the attorney reported that the attorney, or the attorney’s firm, maintains malpractice insurance.

Public Record of Discipline and Pending Proceedings

None

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