Clark advises clients on estate planning and probate issues, transfer taxes, and nonprofit governance issues. He has been Board Certified by the Texas Board of Legal Specialization since 1994. He has been listed in Best Lawyers©, Trusts and Estates since 2010, and is AV® rated by Martindale-Hubbell.
He is currently serving as a member of Hospice Austin Foundation Investment Committee, and as a trustee on the Board of the Carl C. Anderson, Sr. and Marie Jo Anderson Charitable Foundation.