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We are a New York City firm whose practice is devoted exclusively to matrimonial and family law.


Our individual professionals have long been recognized locally, nationally, and internationally as experts of the highest caliber in both the financial and child-related aspects of divorce.


We are proud of our reputation for advising and representing our clients diligently, efficiently, creatively, and with the utmost integrity and discretion.

Our Founding Partners

David Aronson

Allan E. Mayefsky


Pamela M. Sloan

We are leaders in the family law sections of international, national, state and local bar associations.  Our lawyers teach and lecture at continuing education programs for lawyers, judges, appraisers, and accountants on issues relating to matrimonial law, valuation, tax, and trials.  

Senior executives and leaders in finance, real estate, fashion, law, visual and performing arts, technology, media, science, academia and sports, in addition to members of many of America’s most prominent families, routinely call on us to work with them in understanding and analyzing their family law concerns, and formulating reasonable and responsible resolutions.

Many family law practitioners claim to have “seen it all” when it comes to complex family issues, but we have a different view. Even if an issue appears similar to one we’ve confronted before, we know that the right solution will be unique for each client. Careful analysis, creative thinking, and a deep understanding of a particular family’s circumstances ground our advice as we guide each client to an individualized, workable solution.

We are skilled negotiators whose cases most often result in settlements, but we are also tough, able, and honest litigators who can try a case aggressively when settlement is unattainable.

We speak for our clients in an informed, dignified, and thoroughly
professional manner.

We safeguard our clients’ identities and privacy.

We are a “go-to” firm for the corporate and trusts and estates lawyers at many prominent New York, national and international firms who want to ensure that their clients have the same first-quality representation on personal matters that they receive on their business matters.

We are often hired by colleagues from other family law firms to serve as arbitrators and mediators in cases they are having difficulty resolving.

We are mindful of our obligation to do more for the profession than simply represent our clients well. We are active members and leaders of bar associations and professional organizations, among them the American Academy of Matrimonial Lawyers, the American College of Family Trial Lawyers, the International Academy of Family Lawyers, the Family Law Section of the American Bar Association, the Family Law Section of the New York State Bar Association, and the Matrimonial Law Committee of the New York City Bar Association.

Through our affiliations with several New York not for profit organizations, we provide pro bono legal representation in family law matters to members of underserved communities.

We volunteer as lecturers and teachers at continuing education programs for judges, lawyers, appraisers, accountants and the public at large. Beyond the law, we are board members and active participants in community-based organizations that address issues ranging from the environment to inner-city education to health.

Aronson Mayefsky and Sloan, LLP is one of only two New York matrimonial firms to be ranked in Band 1 by the respected British legal ratings publicationChambers and Partners and Chambers USA, in its Family/Matrimonial: High Net Worth Guide.  We are also the only New York matrimonial firm to have two of its partners, David Aronson and Pam Sloan, ranked in Band 1 as individuals.

We have earned the highest rating from Martindale-Hubbell, the authoritative resource for peer review of the competence and ethics of legal professionals. Our lawyers are routinely selected for listing in lay publications such as Best Lawyers in America, Chambers & Partners and Super Lawyers.

We are committed to excellence, professionalism, integrity, and good citizenship. Our reputation for fulfilling that commitment has been earned over decades, and is recognized by our clients, our peers, and the judiciary before whom we practice.


This website contains general information about Aronson Mayefsky & Sloan, LLP and is not intended to be a source of legal advice for any purpose. Neither receipt of information presented on this site, nor the sending of any email or other electronic communication to Aronson Mayefsky & Sloan, LLP or its lawyers through this site, shall create an attorney-client relationship, and any such email or communication will not be treated as confidential. No user of this site should act or refrain from acting on the basis of information included on this site without seeking legal advice of counsel.

Aronson Mayefsky & Sloan, LLP expressly disclaims all liability with respect to actions taken or not taken based on any content in this site.