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

1,041 Profile Views

Boyd Donnelly

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'...

Harry Schoen

Feb 02, 2026

The absolute best in Atlanta for Corporate Law - and I mean that from the bottom of my heart

Lucy Hayes

Feb 02, 2026

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

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...

Tamara Franey

Feb 02, 2026

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

Honestly, I can't thank Margaret O. Costello enough for everything they've done for me. They really know their stuff when it comes to Corporate Law and it shows in the results. 10/10 would recommend t...

Candace Huel

Feb 02, 2026

So happy with the results of my case thanks to the hard work of Margaret O. Costello and staff