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

1,036 Profile Views

Alma Dach

Feb 02, 2026

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

Best lawyer for Corporate Law in Atlanta. Period. I've seen others, but Margaret O. Costello is on another level. They truly care about their clients and work hard to get the best results. I am so tha...

Danielle Collins

Feb 02, 2026

Highly recommend Margaret O. Costello for anyone needing expert Corporate Law help in Georgia

I was really stressed about my case in Atlanta, but Margaret O. Costello made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled every de...

Jean Franey

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...

Ben Marvin

Feb 02, 2026

Excellent legal representation provided by Margaret O. Costello for my Corporate Law case

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...

Cora Haley

Feb 02, 2026

A huge weight off my shoulders thanks to the amazing work of Margaret O. Costello

Margaret O. Costello has been doing this since 2023, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal matters in Georgia. Their ex...