Financial planning tailored to your goals

Team Photo

With the complexity of today's markets and uncertainty about tomorrow's economy, good financial advice is more important than ever. As a team of dedicated Financial Advisors, we're committed to helping you organize your finances around your short term needs, your longer-term goals and what you envision for generations to come. Our knowledgeable perspective, good judgement and broad experience can help you meet your challenges and seize opportunities.

Three generations on beach

Pursuing your goals together

Our mission is to provide quality strategies customized to your needs. Our goal is to be your primary source of financial advice. To this end, we concentrate our efforts on developing long-term relationships through a commitment to quality client service.

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    Timothy O'Brien

    Managing Director–Wealth Management

    Financial Advisor

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      Experience

      • 40 years of experience in the financial services industry
      • Tim started his career at EF Hutton in 1983, and joined PaineWebber Inc. in 1990
      • Tim was the Branch Manager in South Burlington, Vermont branch in 1995 to 2001
      • In 2008 Tim completed the firm's Wealth Advisor designation.

      Degree

      • Bachelor of Science – Economics, University of Vermont, Burlington, VT

      • Tim holds FINRA Series 7 and 66 securities licenses and is a licensed California insurance agent (License #: 0D30201)
      • Barron's Top 1,000 Financial Advisors, 2011, 2012, 2013The Barron's rating is awarded annually in March and is based on information from the prior year Q3. 
      • Barron's Top 1,200 Financial Advisors, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
        The Barron's rating is awarded annually in March and is based on information from the prior year Q3. 
      • Forbes Best-in-State Wealth Advisors, 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.

          38 Eastwood Drive
          Suite 400
          South Burlington, VT 05403
          timothy.obrien3@ubs.com
          Timothy O'Brien
          38 Eastwood Drive,South Burlington,VT,05403
        • Stefanie Gretkowski Profile Photo

          Stefanie C. Gretkowski, CFP, CDFA

          Senior Wealth Strategy Associate

          CERTIFIED FINANCIAL PLANNER®

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          • AZ
          • CA
          • CT
          • FL
          • IA
          • IN
          • MA
          • ME
          • MI
          • MT
          • NC
          • NH
          • NJ
          • NY
          • OR
          • SC
          • TX
          • VA
          • VT
          • WA

          Experience

          • 26 years of experience in the insurance and financial service industry
          • Stefanie started at Prudential Insurance in 1997 and joined PaineWebber Inc. in 1998
          • In 2000 to 2003 she joined Smith Barney and then rejoined UBS Financial Services in 2003
          • In 2013 Stefanie obtained her CERTIFIED FINANCIAL PLANNER® certification and is CFP® professional

          Degree

          • Master of Business Administration, Champlain College, Burlington, Vermont
          • Bachelor of Arts – Professional Studies, focus in business, Johnson State College

              • CERTIFIED FINANCIAL PLANNER®
              • Certified Divorce Financial Analyst
              38 Eastwood Drive
              Suite 400
              South Burlington, VT 05403
              stefanie.gretkowski@ubs.com
              Stefanie C. Gretkowski, CFP, CDFA
              38 Eastwood Drive,South Burlington,VT,05403
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              Jake Dieterle

              Senior Wealth Strategy Associate

              CERTIFIED FINANCIAL PLANNER®

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              • AK
              • AL
              • AR
              • AZ
              • CA
              • CO
              • CT
              • DC
              • DE
              • FL
              • GA
              • HI
              • IA
              • ID
              • IL
              • IN
              • KS
              • KY
              • LA
              • MA
              • MD
              • ME
              • MI
              • MN
              • MO
              • MS
              • MT
              • NC
              • ND
              • NE
              • NH
              • NJ
              • NM
              • NV
              • NY
              • OH
              • OK
              • OR
              • PA
              • PR
              • RI
              • SC
              • SD
              • TN
              • TX
              • UT
              • VA
              • VI
              • VT
              • WA
              • WI
              • WV
              • WY

              Experience      

              Jake's first experience with UBS was an internship during summer in college at our Portland, ME branch. After graduating from Trinity college he moved to New York City to join UBS in the Financial Advisor Development Program. Upon graduating from the Development Program he worked in the firm’s Institutional Advisory Group for four years during which time he obtained his CERTIFIED FINANCIAL PLANNER®, certification. In that role he was a Financial Advisor and Corporate Stock Benefit Consultant working with Directors and Executives of the firm’s corporate clients in the equity award space. He moved to the South Burlington Branch in 2024.

               

              Degree

              Bachelor of Arts – Economics, Trinity College
              Minor in Formal Organizations, Fast Track in Entrepreneurial Studies, Trinity College
              Tuck Business Bridge Program at Dartmouth
               
              Personal

              Jake was on the Track and Field team at Trinity for four years.
              Jake enjoys golfing, fishing and most things outdoors. 
              He lives in South Burlington with his wife, Eliza.

                  • CERTIFIED FINANCIAL PLANNER®
                  38 Eastwood Drive
                  Suite 400
                  South Burlington, VT 05403
                  joseph.dieterleiv@ubs.com
                  Jake Dieterle
                  38 Eastwood Drive,South Burlington,VT,05403
                • Jennifer

                  Jennifer C. McGrath

                  Senior Registered Client Associate

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                  • AK
                  • AL
                  • AZ
                  • CA
                  • CO
                  • CT
                  • DC
                  • DE
                  • FL
                  • GA
                  • IA
                  • IL
                  • IN
                  • KY
                  • MA
                  • MD
                  • ME
                  • MI
                  • MT
                  • NC
                  • NH
                  • NJ
                  • NM
                  • NV
                  • NY
                  • OH
                  • OR
                  • PA
                  • RI
                  • SC
                  • TN
                  • TX
                  • UT
                  • VA
                  • VT
                  • WA
                  • WY

                  Experience:

                  Jennifer joined the firm, formerly, PaineWebber in 1994.  She worked with Tim and his Branch Management until she left to raise her three boys.  She returned to the O'Brien Gretkowski Team in 2014.  She is a Senior Registered Client Associate with 20 years experience in the Financial Services Industry.

                  Degree:

                  Bachelor of Arts - Business Administration 1998, Champlain College, Burlington, VT

                  Personal:

                  Played 2 years of Soccer and Softball at the Collegiate level.  She loves to play golf with her family, especially her three boys Connor, Seamus and Kiefer.  She enjoys watching them play baseball, from Little League right up through the Collegiate Level and traveling with them.

                        38 Eastwood Drive
                        Suite 400
                        South Burlington, VT 05403
                        jennifer.mcgrath@ubs.com
                        Jennifer C. McGrath
                        38 Eastwood Drive,South Burlington,VT,05403
                      Texas

                      Texas flood relief

                      Support and resources

                      Our UBS Optimus Foundation in the US is directly supporting emergency response, relief and reconstruction activities in Texas through our partnerships with World Central Kitchen and Team Rubicon. You can support these organizations and pool funds, together with Optimus, to increase their ability to support communities in Texas. In addition, any client donation to one of our Optimus partners will receive a 10% match from UBS.

                      Learn how you can get involved and make an impact through the UBS Optimus Foundation.

                      The UBS Optimus Foundation is a global network of separately organized and regulated, tax-exempt, charitable organizations, founded and managed by UBS, that make grants and other financial contributions to implementing partner organizations aligned with their values and objectives.

                      Connecting you to the deep resources of UBS

                      By seeing the big picture, we provide access to the global platforms and the financial and intellectual strengths of UBS’s experts in Wealth Management, Asset Management and our Private and Investment Banks.

                      Three generations in apple orchard

                      Turn possibilities into a plan

                      What’s really important to you—today and for the long term? UBS Wealth Way starts with questions and discussions that can help you organize your financial life into three key dimensions: Liquidity—to help provide cash flow for short-term expenses, Longevity—for longer-term needs and Legacy—for needs that go beyond your own.

                       

                      UBS Wealth Way is an approach incorporating Liquidity. Longevity. Legacy. strategies that UBS Financial Services Inc. and our Financial Advisors can use to assist clients in exploring and pursuing their wealth management needs and goals over different time frames. This approach is not a promise or guarantee that wealth, or any financial results, can or will be achieved. All investments involve the risk of loss, including the risk of loss of the entire investment. Time frames may vary. Strategies are subject to individual client goals, objectives and suitability.

                      Retirement couple holding surfboards

                      Retirement planning

                      You've worked hard and carefully invested to ensure that you’ll live life on your terms in retirement. But are you ready for a retirement that could span 30 years or more? What’s the right plan to help make sure your retirement funds last? Our team will work with you to help preserve your lifestyle and livelihood in retirement by understanding your goals, risk and time horizon.

                      A leader in wealth management

                      Backed by the strength of our parent company, UBS AG

                      $6 trn

                      UBS Group invested assets
                      As of 12/31/2024

                      51 countries

                      Our global footprint

                      Global leader

                      UBS is a leading and truly global wealth manager

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