Experience that anticipates, plans and protects

At times, the complexity of today’s global economy may feel overwhelming. Whether you’re a working professional who is building wealth, a successful executive or business owner contemplating your next act, or the head of a multigenerational family looking to preserve your family’s future—you have questions. You expect clear answers from an advisor with worldwide experience who understands you, your family and your community.


Our highly credentialed team offers the thoughtful perspective and proactive service your family needs to help meet their goals. With a team of advisors spanning decades of experience, we strive, relentlessly, to make sure you feel well taken care of. By putting financial planning at the core of everything we do, we offer the capabilities to help you, your business and your family unlock opportunity, preserve wealth and create continuity.

TAA team photo

Meet our team

  •  Donald Trabert

    Donald Trabert

    Senior Vice President–Wealth Management

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    • AZ
    • CA
    • DE
    • FL
    • HI
    • ID
    • IL
    • IN
    • LA
    • MA
    • MI
    • NE
    • NJ
    • NV
    • NY
    • OH
    • OK
    • OR
    • PA
    • TN
    • TX
    • UT
    • VA
    • WA
    • WI
    • WY

    Don manages cash and fixed income for private clients and foundations. Don concentrates on structuring and overseeing both taxable and tax-exempt bond portfolios for maximum safety. Don considers issuer credit, interest levels, inflation expectations, yield curve shape, and sector exposures. Don's seasoned approach is supported by an extensive credit, quantitative, and economic research platform. He is considered one of the firm's top fixed income advisors and was selected to serve on the UBS Asset Management national financial advisory board. Don lives with his wife in Mill Valley and enjoys golf, skiing, gardening, cooking and his dog Jake.

    • B.S., University of Notre Dame
    • Licenses and Certifications: Series 7, 63 and 66; CA State Insurance #0I79773
    • More than 40 years of industry experience

          555 California Street
          32nd
          San Francisco, CA 94104
          donald.trabert@ubs.com
          Donald Trabert
          555 California Street,San Francisco,CA,94104
        • Joseph Asiano

          Joseph R. Asiano

          Senior Vice President–Wealth Management

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          • AZ
          • CA
          • DE
          • FL
          • HI
          • ID
          • IL
          • IN
          • LA
          • MA
          • MI
          • NC
          • NV
          • NY
          • OH
          • OK
          • OR
          • PA
          • TN
          • TX
          • UT
          • VA
          • WA
          • WI

          Joe provides wealth preservation and growth advice for corporate executives, entrepreneurs, families and foundations. He has expertise in managing wealth resulting from IPO, merger, and private liquidity events. Joe delivers personalized wealth management through a tax-efficient investment process featuring rebalancing, portfolio reporting, and a goals-based approach to asset allocation. He also structures and executes client philanthropic goals. Joe and his wife live in San Francisco where they raised two children. He has been active in Scouting and serves on the St. Vincent de Paul Men's Club board where he has also led as President. Most recently, Joe served for seven years on the board of a global fine wine company with land and facilities across Napa, Sonoma, and Oregon.

          Education and credentials

          • B.S.B.A. University of California, Berkeley
          • M.B.A. Yale University
          • Licenses and Certifications: Series 7 and 66; CA State Insurance #0H11686
          • More than 28 years of industry experience

                555 California Street
                32nd
                San Francisco, CA 94104
                jr.asiano@ubs.com
                Joseph R. Asiano
                555 California Street,San Francisco,CA,94104
              • Margaret Ring-Wiersma

                Margie Wiersma, CFP®, AAMS®, CPWA®

                Associate Director

                Senior Wealth Strategy Associate

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                • AZ
                • CA
                • DE
                • FL
                • HI
                • ID
                • IL
                • IN
                • LA
                • MA
                • MD
                • MI
                • NE
                • NJ
                • NV
                • NY
                • OH
                • OK
                • OR
                • PA
                • TN
                • TX
                • UT
                • WA
                • WI
                • WY

                Margie builds tailored plans and strategies based on an understanding of client needs, goals, and risk tolerance by using the tools and resources of the firm, knowledge of financial planning, tax and investing strategies, insurance, estate plans and cash flow management. She manages fixed income and equity trading, restricted stock settlement and general client services functions. Her specialties include trading, tax and estate planning, philanthropy, and retirement accounts/management. She works within the team as a proactive resource supporting change processes and procedures.

                Education and credentials

                • B.S.B. with a Finance concentration, Golden Gate University
                • Yale School of Management, Wealth Management Theory & Practice
                • CERTIFIED FINANCIAL PLANNER® professional, ACCREDITED ASSET MANAGEMENT SPECIALIST® professional, CERTIFIED PRIVATE WEALTH ADVISOR® professional
                • Licenses and Certifications: Series 7 and 66
                • More than 32 years of experience


                Outside of UBS
                Margie resides in the Bay Area with her husband where they have raised four children. She enjoys hiking, traveling, and cooking for friends and family.

                      555 California Street
                      32nd
                      San Francisco, CA 94104
                      margie.wiersma@ubs.com
                      Margie Wiersma, CFP®, AAMS®, CPWA®
                      555 California Street,San Francisco,CA,94104
                    • Ariana Padilla

                      Ariana Padilla

                      Client Associate

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                        Ariana joined UBS Financial Services, Inc. in 2004 and applies her 20+ years of experience to support clients with various client service needs. She is attentive, detail oriented and she takes great pride in delivering excellent service while staying true to the core values of UBS. A skillful problem-solver, Ariana is a tremendous resource for all operational questions and issues, drawing upon her deep knowledge of the financial industry to access the best solution for each situation. Ariana is dedicated to providing exceptional service to clients and excels at providing solutions to achieve customer satisfaction. Ariana currently resides in Tracy, California with her daughter Averie. In her free time, Ariana likes to travel, explore new restaurants, and spend quality moments with her friends and family.

                              555 California Street
                              32nd / 33rd / 34th Floor
                              San Francisco, CA 94104
                              ariana.padilla@ubs.com
                              Ariana Padilla
                              555 California Street,San Francisco,CA,94104

                            PWM Perspectives - You're building it early

                            The New Era of Wealth

                            You. Connected.

                            As a UBS Private Wealth Management team, we connect you to firmwide experts, thought leaders and premier resources to address your most important goals.

                            You. Connected.

                            Provide clarity in a complex world

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                            Provide clarity in a complex world

                            Smart planning for executives

                            smart planning

                            Smart planning for executives

                            Planning for the life of your business

                            on phone

                            Planning for the life of your business

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                            Our team will help you understand what is happening in the world, how it impacts you and your family, and what you may want to do about it. Our regular check-ins are designed to help preserve what you’ve earned and to work with you toward your long-term goals. The UBS House View helps provide actionable insights into how best to support your goals.

                            smart planning

                            We can help map out a plan for your wealth that takes into account your goals, needs and plans for the future. Backed by the resources of the broader firm, our team can help you make smart financial decisions, address your evolving liquidity needs and develop shrewd tax strategies so that you can move forward with confidence.

                            Whether you are tackling the timing of executing stock options or selling shares, our knowledge and experience can free you to focus on your future.

                            Learn more

                            on phone

                            Whether you are building something new, expanding or paving the way for succession or a future liquidity event, planning is critical. Wherever you are in your company’s development, we will work closely with you to assess your options, offer insight and guidance, and craft a roadmap that takes into account both the short and long term.

                            And if you preparing to sell your business, we can help ensure that the process is well-thought-out, runs smoothly and aims to create the most favorable outcome.

                            Private Wealth Management

                            As a team within the exclusive Private Wealth Management division at UBS, we connect you to the dynamic presence of one of the world‘s leading wealth managers. Private Wealth Advisors serve many of the firm‘s largest relationships, providing extensive reach and the distinct advantage of the firm‘s global perspective, insights and resources.

                            Couple in an art gallery

                            Comprehensive planning for significant wealth

                            Man working on laptop during virtual call

                            Planning for a changing tax landscape

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                            Maximize your potential wealth

                            Adult children with parents

                            Dividing wealth across generations

                            Client case studies

                            Learn how we worked with clients and provided tailored solutions.

                            Insights

                            A leader in wealth management

                            Backed by the strength of our parent company, UBS AG

                            Global leader

                            UBS is a leading and truly global wealth manager

                            Financial strength

                            Driving confidence.
                            A-  Standard & Poor’s

                            UBS AG, long-term senior secured debt rating. As of 12/31/2025

                            #1

                            for High Net-Worth clients

                            Euromoney Private Banking and Wealth Management Survey (peer review), 2015-2022

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