Kiley Barnhorst MacDonald

Senior Vice President, Client Advisor

San Diego, CA

Kiley is a Senior Vice President, Client Advisor at Whittier Trust, serving ultra-high-net-worth individuals and families across the full spectrum of wealth management. Her work centers on trust and estate planning, fiduciary oversight, philanthropic strategy, and family governance—all thoughtfully tailored to honor the unique goals and values of the families she serves.

With more than three decades of experience in legal, corporate, and nonprofit sectors, as well as a background in strategic planning and financial analysis, Kiley brings a deeply informed, multidisciplinary approach to client relationships. Before joining Whittier Trust, she held senior roles as a wealth management trust advisor and as an attorney focused on estate planning, trust administration, and charitable advising.

Kiley holds a BA in Economics from Dartmouth and a JD from UCLA School of Law. She is a California State Bar Certified Specialist in Estate Planning, Trust, and Probate Law. Kiley has volunteered extensively for local San Diego nonprofits, served as a board member for community service and educational organizations, and been awarded for her pro bono probate court work through The Legal Aid Society. 

Outside the office, Kiley enjoys pickleball, mahjong, and spending time with her three children in New York City and Nashville.