Our Attorneys

Perrin W. Clark Partner Direct dial: 713-980-7716 Email Perrin pclark@ydklaw.com V-Card 3737 Buffalo Speedway
Suite 1500
Houston, TX 77098-3738
Fax : 844-272-0807

Perrin's practice includes representing individuals, fiduciaries, and closely-held businesses in a wide range of matters, such as domestic and international estate and trust planning, estate and trust administration, including probate and contested matters, charitable planning, and business structuring, governance and succession. Perrin has extensive experience representing individual and corporate fiduciaries and beneficiaries in connection with the administration of complex estates and trusts.  His clients include senior executives of public and private corporations and principals of private equity funds and other types of investment funds.

Prior to joining Ytterberg Deery Knull, Perrin served as an Executive Director and trust counsel for Morgan Stanley Smith Barney LLC in New York, regularly advising Morgan Stanley and its affiliates on fiduciary and related matters, including advising investment professionals in connection with investment programs and strategies.

Perrin began his legal career with Sullivan & Cromwell LLP in New York, where he was an associate attorney.  At Sullivan & Cromwell, Perrin represented high net worth individuals and fiduciaries and businesses related to them, as well as public charities and private foundations.  His clients included senior executives of public and private corporations and principals of private equity funds and other types of investment funds.


  • Admitted to Bar, Texas, 2011
  • Executive Director, Morgan Stanley Smith Barney LLC, New York, 2007-2011
  • Associate, Sullivan & Cromwell LLP, New York, 2000-2007
  • Admitted to Bar, New York, 2001
  • University of Virginia School of Law, JD, 2000
  • Officer, United States Army, 1993-1997
  • Princeton University, B.A., summa cum laude, 1993


  • State Bar of Texas
  • Houston Bar Association
    • Probate,Trusts and Estates Section
  • Houston Estate and Financial Forum
  • Houston Wealth Advisors Forum
  • New York State Bar Association
  • New York City Bar Association
  • Society of Trust and Estate Practitioners (STEP)


  • Editor-in-Chief, Virginia Journal of International Law
  • Sigma Xi


  • Speaker, "Tax Cuts and Jobs Act of 2017," Houston, Texas, 2018
  • Co-Author, "Gifts of Interest in Art after Estate of Elkins," Sotheby's Trusts & Estates Bulletin, Winter/Spring 2015
  • Speaker, "Estate Planning 2014," Houston, Texas, 2014
  • Presenter, "Planning for Flexible Trusts," Houston, Texas, 2012