Atty. Ian Weinstock

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

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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.

Verified attorney profile · Updated June 2026

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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Frequently Asked

Common questions about Ian Weinstock

Where is Ian Weinstock's law office located?
Ian Weinstock's law practice is located in New York, New York. The firm is Kostelanetz LLP. You can contact the office directly through this profile page.
Where did Ian Weinstock go to law school?
Ian Weinstock earned their education at (JD, 1994); (BA).
How can I contact Ian Weinstock for a consultation?
You can contact Ian Weinstock directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Ian Weinstock receiandd?
Ian Weinstock's notable recognition includes: Best Lawyers in America — Trusts and Estates; Best Lawyers in America — Additional Areas of Practice:; Best Lawyers in America — Tax Law.

Practice Areas

Education

JD
Yale University
- 1994
BA
Yale University
- In Progress

Awards

Best Lawyers in America — Trusts and Estates
- 2026
Best Lawyers in America — Additional Areas of Practice:
- 2026
Best Lawyers in America — Tax Law
- 2026

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