Margaret O. Costello

4.5 (33 reviews )

Atlanta Georgia United States

Corporate Law Mergers and Acquisitions Law

Recognized in Ones to Watch since 2023

404-873-8500 Website

About Margaret

Margaret O. Costello is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law.Margaret O., who practices law in Atlanta, Georgia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Margaret O. is held by other top lawyers in the same geographic and legal practice area.

Margaret O. Costello is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law.

Margaret O., who practices law in Atlanta, Georgia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Margaret O. is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Corporate Law

Mergers and Acquisitions Law

Education

Tulane University

Awards & Recognition

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Reviews

4.5 / 5

33 Reviews

1,035 Profile Views

Debra Ziemann

Feb 02, 2026

Top notch experts in Atlanta - Margaret O. Costello is by far the best lawyer I've ever had

Super helpful and professional staff at Margaret O. Costello's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and leg...

Darla Hagenes

Feb 02, 2026

Margaret O. Costello did a great job handling my complex Corporate Law case from start to finish

Needed help with Corporate Law and Margaret O. Costello delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Georgia looking for high-quality le...

Lana O'Conner

Feb 02, 2026

Would recommend Margaret O. Costello for sure to anyone in Atlanta needing legal help

I wasn't sure who to call for my Corporate Law problem, but I'm so glad I went with Margaret O. Costello. They really listened to me and understood my situation. It was such a relief to have someone s...

Lucas Mosciski-Weissnat

Feb 02, 2026

Five stars for the incredible team at Margaret O. Costello in Atlanta - they are amazing

If you need a Corporate Law lawyer, Margaret O. Costello is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of my case. I felt...

Melissa Wiza

Feb 02, 2026

Simply amazing representation from Margaret O. Costello's office during my recent legal matter

Short and sweet: Margaret O. Costello is the real deal and a true professional in the field of Corporate Law. If you're in Atlanta and need help with your legal issues, call them immediately. You won'...