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

1,060 Profile Views

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Emma Feil

Jan 31, 2026

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

Mary L. O'Connor has been doing this since Recognized in Best Lawyers since 2019, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal...

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Leon Schultz

Jan 31, 2026

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

I've already told all my friends and family about Mary L. O'Connor. If you need Commercial Litigation law help in Texas, they're the ones to see without any doubt. They are local experts who really un...

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Stacey Schoen

Jan 31, 2026

Highly recommend Mary L. O'Connor for anyone needing expert Commercial Litigation law help in Texas

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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Christie Konopelski

Jan 31, 2026

Professional service and clear communication provided by Mary L. O'Connor in Dallas

It's hard finding a reliable lawyer these days, but Mary L. O'Connor in Dallas is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, responsive,...

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Otis Runte

Jan 31, 2026

Great people who truly care at Mary L. O'Connor - the best legal team in Texas

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...