Mary L. O'Connor

Mary L. O'Connor

Commercial Litigation Litigation - Regulatory Enforcement (SEC, Telecom, Energy) Litigation - Securities
Recognized in Best Attorney USA since 2019

About Mary

Mary L. O’Connor’s practice focuses on representing public companies and their officers and directors in commercial litigation and arbitration, securities litigation, internal investigations, and regulatory investigations and enforcement proceedings.Ms. O’Connor is a member of the Commercial Panel of the American Arbitration Association and is a FINRA arbitrator.

Mary L. O’Connor’s practice focuses on representing public companies and their officers and directors in commercial litigation and arbitration, securities litigation, internal investigations, and regulatory investigations and enforcement proceedings.Ms. O’Connor is a member of the Commercial Panel of the American Arbitration Association and is a FINRA arbitrator.

Mary L. O’Connor’s practice focuses on representing public companies and their officers and directors in commercial litigation and arbitration, securities litigation, internal investigations, and regulatory investigations and enforcement proceedings.

Ms. O’Connor is a member of the Commercial Panel of the American Arbitration Association and is a FINRA arbitrator.

Professional Affiliations

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Reviews

4.6 / 5

38 Reviews

1,062 Profile Views

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Tom Bashirian

Jan 31, 2026

So happy with the results of my case thanks to the hard work of Mary L. O'Connor and staff

I was really stressed about my case in Dallas, but Mary L. O'Connor made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled every detail...

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Gustavo Armstrong

Jan 31, 2026

Would recommend Mary L. O'Connor for sure to anyone in Dallas needing legal help

I wasn't sure who to call for my Commercial Litigation law problem, but I'm so glad I went with Mary L. O'Connor. They really listened to me and understood my situation. It was such a relief to have s...

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Kara Gorczany

Jan 31, 2026

Really helpful and compassionate service from everyone at Mary L. O'Connor's firm

I wasn't sure who to call for my Commercial Litigation law problem, but I'm so glad I went with Mary L. O'Connor. They really listened to me and understood my situation. It was such a relief to have s...