as of 6/18/2026 2:13:19 AM

Sean Michael O'Brien

Lippes Mathias LLP
50 Fountain Plaza Suite 1700
Buffalo, New York 14202-2216

(716) 853-5100

sobrien@lippes.com

Date Admitted

Illinois Registration Status

Active out of state lawyer permitted to practice pursuant to Rule 707 in specific Illinois proceedings as documented in the record of each proceeding. Contact ARDC Registration Department for permitted proceedings.

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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