About Our Firm


Mangan Ginsberg LLP is a partnership formed between a former securities litigator and a former New York County assistant district attorney. Our blended litigation backgrounds provide more than four decades of combined experience at trial in courts throughout New York State and in advising those with complex legal needs. We share a passion for practicing law and are committed to promoting the just ends of our clients.

The firm is dedicated to achieving the best results for our clients. We believe hard work and complete devotion to our clients’ legal needs, combined with our superior experience, will carry the day in court. We use one measure for excellence in our representation: results.


"It was my esteemed pleasure to work with Mr. Ginsberg. I found [him] to be honest, forthcoming, ethical, considerate, understanding, sincere and most of all very astute and knowledgeable of law and practice. I wholeheartedly recommend his services."

- Mary P. Rosario, MS, ARNP, RN,BC

Jonathan ginsberg & Michael Mangan

Jonathan ginsberg & Michael Mangan