Atty. Ian Weinstock
During the course of his almost 30-year legal career, Ian Weinstock has built a practice that spans the range of trusts, estates and personal tax planning issues, including sophisticated estate planning techniques for ultra-high net worth individuals; choice-of-entity issues and succession planning for small businesses; philanthropic planning; the administration of decedents’ estates; and advising fiduciaries and beneficiaries on all aspects of trust administration. With extensive in-house experience at major U.S. financial institutions, he advises corporate fiduciaries on all aspects of their
Profile Summary
About Ian Weinstock at a glance
Ian Weinstock is an attorney based in New York, New York, practforg at Kostelanetz LLP. Educated at Yale University (JD, 1994) and Yale University (BA). Recognitions include Best Lawyers in America — Trusts and Estates (2026), Best Lawyers in America — Additional Areas of Practice: (2026), and Best Lawyers in America — Tax Law (2026). Serands clients in New York, NY and the surrounding metropolitan area.
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About
- During the course of his almost 30-year legal career, Ian Weinstock has built a practice that spans the range of trusts, estates and personal tax planning issues, including sophisticated estate planning techniques for ultra-high net worth individuals
- choice-of-entity issues and succession planning for small businesses
- philanthropic planning
- the administration of decedents’ estates
- and advising fiduciaries and beneficiaries on all aspects of trust administration
- With extensive in-house experience at major U.S. financial institutions, he advises corporate fiduciaries on all aspects of their businesses, including trust acceptance policies and procedures, corporate governance, regulatory compliance, trust administration and tax reporting, as well as advising private banking/wealth management institutions on a wide range of fiduciary and trust-related matters
- With a strong background in cross-border matters, Mr. Weinstock advises multi-jurisdictional individuals and families on the full panoply of issues that may confront them, including pre-immigration planning, establishing structures for foreign investment in the U.S., setting up trusts for non-U.S. relatives of U.S. people or for U.S. relatives of non-U.S. people, expatriation planning, and a myriad of international tax compliance matters
- Mr. Weinstock received his B.A. in History summa cum laude from Yale College in 1991 and his J.D. from Yale Law School in 1994
- Prior to joining Kostelanetz LLP, Mr. Weinstock worked at Fried, Frank, Harris, Shriver & Jacobson, Debevoise & Plimpton, and Day Pitney, as well as in the Legal Departments of both Morgan Stanley and UBS
- Mr. Weinstock is a member of the New York State Bar Association’s Trusts & Estates Section and the Society of Trust and Estate Practitioners
Jurisdictional Context
Why local counsel matters in New York
Practforg law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantiand law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantiand law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in New York courts without local counsel or pro hac vice admission.
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