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

1,038 Profile Views

Megan Reynolds

Feb 02, 2026

Outstanding experience with Margaret O. Costello in Atlanta - truly the best legal team

If you're looking for someone who actually cares and will fight for you, go to Margaret O. Costello. They helped me out big time with my Corporate Law issue and kept me informed at every step of the p...

Dianne Veum

Feb 02, 2026

Outstanding experience with Margaret O. Costello in Atlanta - truly the best legal team

I didn't think I'd find such a good lawyer in Georgia, but here we are and I am thoroughly impressed. Margaret O. Costello is just awesome and exceeded all my expectations. No complaints at all! They...

Cora Luettgen

Feb 02, 2026

So glad I called Margaret O. Costello to handle my Corporate Law case in Atlanta

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...

Mamie Emmerich

Feb 02, 2026

Really helpful and compassionate service from everyone at Margaret O. Costello's firm

I've already told all my friends and family about Margaret O. Costello. If you need Corporate Law help in Georgia, they're the ones to see without any doubt. They are local experts who really understa...

Nettie Upton

Feb 02, 2026

Professional service and clear communication provided by Margaret O. Costello in Atlanta

I appreciate how Margaret O. Costello handled my case. No fluff, just straight to the point and very effective representation for my Corporate Law matter. They are obviously very experienced and know...