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
    • OR
    • PA
    • TN
    • TX
    • UT
    • VA
    • WA
    • 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
    • Forbes Best-in-State Wealth Advisors, 2025The Forbes rating is compiled by Shook Research and awarded annually in April based on information from a 12 month period ending June of the prior year.
    • Forbes Best-in-State Wealth Management Teams, 2024, 2025The Forbes rating is compiled by Shook Research and awarded annually in January, based on information from a 12 month period ending March of the prior year.
    • UBS Wealth Management President’s Council, 2024UBS Financial Services Inc. Councils are a distinction held by UBS Financial Advisors based on criteria including evaluation of compliance with firm rules, standards & policies and revenue. Council membership is not representative of any one client's experience and is not indicative of the advisor’s future performance.

        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
        • NE
        • NJ
        • NV
        • NY
        • OH
        • OR
        • PA
        • TN
        • TX
        • UT
        • VA
        • WA

        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 over the years in Scouting and the St. Vincent de Paul Men's Club board. 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.

        • 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 26 years of experience
        • Forbes Best-in-State Wealth Advisors, 2022, 2023, 2024, 2025The Forbes rating is compiled by Shook Research and awarded annually in April based on information from a 12 month period ending June of the prior year.
        • Forbes Best-in-State Wealth Management Teams, 2024, 2025The Forbes rating is compiled by Shook Research and awarded annually in January, based on information from a 12 month period ending March of the prior year.

            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, 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
            • OR
            • PA
            • TN
            • TX
            • UT
            • WA
            • 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. 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.

            • B.S in Business (Finance concentration) Golden Gate University
            • Yale School of Management, Wealth Management Theory & Practice
            • Certified Private Wealth Advisor ® professional
            • Licenses and Certifications: Series 7 and 66
            • More than 30 years of experience

                  555 California Street
                  32nd
                  San Francisco, CA 94104
                  margie.wiersma@ubs.com
                  Margie Wiersma, 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/ 34th /46th Floor
                          San Francisco, CA 94104
                          ariana.padilla@ubs.com
                          Ariana Padilla
                          555 California Street,San Francisco,CA,94104

                        Financial insight for your evolving life

                        When it comes to your family, your business or the legacy you leave behind, our team can help you address your current priorities, the issues you expect to face and the ones you may not see coming.

                        Financial insight for your evolving life

                        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

                        Your family’s values and legacy

                        family legacy

                        Your family’s values and legacy

                        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.

                        family legacy

                        Multigenerational families require skilled advice and guidance. We have deep experience working with families of substantial wealth and can help you navigate the complexities and challenges that come with multiple generations and jurisdictions—all with the goal of ensuring that you are well positioned to optimize your wealth.

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                        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.

                        Container ship

                        Maximize your potential wealth

                        Adult daughter with mother exercising

                        Legacy planning

                        Coworkers around table in lobby

                        Retirement plan services

                        family on beach

                        Creating a legacy for your family’s future

                        two men planning

                        Ready to sell your business?

                        The five hallmarks of a successful sale

                        Move forward with confidence in possibly the biggest venture of your life. We can help advise and orchestrate your entire team of experts throughout the sale process and beyond.

                        Case studies

                        Learn how we worked with clients and provided tailored solutions.

                        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
                        A  Fitch
                        A3
                          Moody’s


                        UBS AG, long-term senior secured debt rating. As of 03/31/2024

                        #1

                        for High Net-Worth clients

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

                        Insights

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