Diana S.C. Zeydel is Global Chair of the Private Wealth Services Practice and focuses her practice on sophisticated estate planning strategies for high net-worth individuals and families. Her practice includes planning for U.S. and non-U.S. citizens and residents. She specializes in intra-generational wealth transfer strategies and business succession planning. She assists clients in litigated probate, trust and guardianship matters, and represents clients before the Internal Revenue Service in matters involving complex fiduciary income tax and estate, gift and generation-skipping transfer tax matters. Diana also represents corporate and individual fiduciaries in connection with the administration of estates and personal and charitable trusts. Diana assists clients in preparing prenuptial and postnuptial agreements. She has participated in numerous projects involving governmental submissions in the estate, gift and GST tax areas. She also serves as an expert witness in matters involving her areas of expertise.

Diana is a frequent lecturer and author and has spoken on a variety of topics before the American College of Trust and Estate Counsel, the Real Property, Trust and Estate Section of the American Bar Association, the Real Property, Probate and Trust Law Section of the Florida Bar, as well as various other professional organizations. She received the "Best in Wealth Management" Americas Women in Business Law Award given by IFLR/Euromoney in 2014. She has been recognized by her peers as "a key figure in shaping the whole wealth management legal profession" and "an incredibly intelligent and creative practitioner, particularly on the tax and business restructuring side," Chambers USA Guide.