Peter O’Mara

peter.omara@o2lawyers.com

Peter O’Mara is a partner at O’Mara & O’Callaghan and focuses his practice on business counseling and litigation in the commercial and financial services fields.

A former Assistant State’s Attorney for Cook County, Peter worked for more than a decade on contract matters for many clients at the Board of Trade, drafting operating agreements, stock purchase contracts, and negotiating other complex contractual and transactional matters. A skilled litigator, he has seen many cases through to favorable verdicts.

Earlier in his career, Peter worked in management for high-end retailers for several

years, managing a sales force of hundreds and generating $10 million in annual revenue. His business experience, coupled with his legal acumen, gives him insight into the unique legal challenges facing business owners.

Peter earned his J.D. cum laude from Penn State Law School on an academic scholarship. During law school, he was named Managing Editor of the Penn State Law Review and earned a CALI Awards for highest grades in Corporations, Negotiations, and Law & Medicine. He began litigating while still in law school, trying felony cases and serving as a clerk for the Cook County State’s Attorney during the summer. He also holds a bachelor’s degree from Boston College.

Peter lives in Chicago with his wife and three children.

EDUCATION

Boston College, B.A., 2002
Penn State Law School, J.D., 2005

ADMISSIONS

Federal Bar, Northern District of Illinois
Federal Trial Bar, Northern District of Illinois

PROFESSIONAL AND CIVIC INVOLVEMENT

Illinois State Bar Association
Chicago Bar Association

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NEWS ● INSIGHTS ● ACCOLADES

OGO proud to announce Sean O’Callaghan named to Chicago Lawyer Magazine’s Prestigious “40 Under 40” list

By vkoke • November 1, 2017

Sean O’Callaghan started his legal career as a misdemeanor trial assistant in the Cook County State’s Attorney’s Office in the Fourth Municipal District’s Maybrook Courthouse. There, on average, he saw 200 to 300 cases on each morning and afternoon court call. It’s a courthouse in which young attorneys can easily become flustered. But that never […] The post OGO proud to announce Sean O’Callaghan named to Chicago Lawyer Magazine’s Prestigious “40 Under 40” list appeared first on O'Mara O'Callaghan, Attorneys at Law.

OGO announces the addition of Trevor Orsinger who joins the firm from the CME’s Market Regulation Department

By vkoke • October 1, 2017

OGO announces the addition of Trevor Orsinger who joins the firm from the CME’s Market Regulation Department. Meet Trevor! The post OGO announces the addition of Trevor Orsinger who joins the firm from the CME’s Market Regulation Department appeared first on O'Mara O'Callaghan, Attorneys at Law.

OGO’s unique approach profiled in Chicago Daily Law Bulletin

By vkoke • April 5, 2017

Little did Sean O’Callaghan, Peter O’Mara and Richard Gleason know when they were sworn in as assistant state’s attorneys on the same day in 2005 that eight years later they would each tender resignations on the same day. The three former prosecutors took a leap in 2013 and left the stability of the state’s attorney’s […] The post OGO’s unique approach profiled in Chicago Daily Law Bulletin appeared first on O'Mara O'Callaghan, Attorneys at Law.

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Peter O’Mara

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