Katten is proud to announce that four partners have been named to The Citywealth Global Guardians 100 list for 2025, a recognition reserved for professionals who consistently exemplify excellence in private client work across law, tax, accountancy, and investment management.
The Katten attorneys recognized include Partner and Global Chair of the Private Wealth Department, Joshua Rubenstein; Ronni Davidowitz, head of Katten's New York Private Wealth Department; and Private Wealth Partners Bonnie Lynn Chmil and Kathryn von Matthiessen.
The Citywealth Global Guardians 100 identifies the world’s most trusted stewards of private wealth and philanthropy — individuals renowned for their technical skill, integrity and unwavering commitment to client service.
A leader in ultra-high-net-worth estate and trust planning and litigation, Joshua advises families, entrepreneurs and family offices on complex, cross-border succession and tax matters, charitable giving and dispute resolution. Known for clarity, pragmatism and technical precision, he structures resilient US and international wealth plans and is widely regarded as a trusted adviser on multi-jurisdictional estates and sensitive family dynamics.
A trusted private wealth adviser known for clear, practical counsel, Ronni crafts estate plans that align legal requirements with clients' personal priorities and guides trust and estate administration and disputes with discretion. Praised by clients and peers for responsiveness, thoroughness and collaborative leadership, she blends technical excellence with empathy to protect family interests and deliver efficient, durable outcomes.
Bonnie represents high-net-worth individuals and families, fiduciary trust companies and financial institutions in high-stakes private client and fiduciary litigation, pairing deep commercial and real estate litigation experience with a practical, empathetic approach. She prioritizes dispute prevention through integrated planning and risk assessment and, when litigation arises, engineers pragmatic, win-win resolutions while navigating sensitive family dynamics to help restore harmony.
Recognized for her sophisticated yet practical counsel on income and transfer tax optimization, Kathryn advises domestic and international private clients on estate and business succession planning. Her extensive cross-border experience, spanning pre-residency and outbound planning, as well as structuring global succession strategies, makes her a trusted adviser in international tax and trust law.
"The Citywealth Global Guardians 100," Citywealth, December 15, 2025
