Group Executive Board

Nationality: British and Trinidadian & Tobagonian | Year of birth: 1964

Michelle Bereaux was appointed Group Integration Officer in May 2023 and is responsible for the development and execution of our integration strategy, working closely with all GEB members and integration workstream leads. Ms. Bereaux has been at UBS for more than 25 years and has held various leadership roles across the firm. She has served as both COO and Head HR for our Investment Bank, has successfully led multiple firm-wide cost and transformation projects, and, most recently, served as COO and UK Country Head of Asset Management. She brings both a wealth of transformation experience as well as a strong Legal, HR, Investment Banking and Asset Management background to lead our integration efforts.

Nationality: German | Year of birth: 1969

Christian Bluhm has been Group Chief Risk Officer since 2016. He held several positions in academia before starting his banking career in 1999 with Deutsche Bank in credit risk management, and subsequently working for Hypovereinsbank and Credit Suisse in the same area. Before joining UBS, he used his expertise and skills as Chief Risk & Financial Officer at FMS Wertmanagement. Mr. Bluhm is responsible for the development of the Group’s risk management and control framework for various risk categories and implementation of its independent control frameworks.

Nationality: British | Year of birth: 1977

Mike Dargan was appointed Group Chief Operations and Technology Officer in May 2023. Previously, he was Group Chief Digital and Information Officer (CDIO) after leading our Group Technology function since joining UBS in 2016. In addition to this remit, where he oversees global functions such as technology and corporate services, he is also Group Executive Board sponsor for our firm’s digital assets strategy and a co-sponsor of both our AI, Data and Analytics center of expertise (along with Robert Karofsky) and our agile transformation. Prior to joining UBS, Mr. Dargan held various senior roles in technology, corporate strategy and investment banking at Standard Chartered Bank, Merrill Lynch and Oliver Wyman.

Nationality: American (US) | Year of birth: 1962

Suni Harford was appointed President Asset Management in 2019 and is the Chair of UBS Optimus Foundation. Ms. Harford has been the UBS GEB Lead for Sustainability and Impact since 2021. She started her Wall Street career at Merrill Lynch & Co., in investment banking, before embarking on a 24-year career at Citigroup Inc., the last nine years of which she was the Regional Head of Markets for North America. Ms. Harford joined UBS in 2017, bringing with her a broad experience from
across the industry, including in research, client coverage and risk management, and successfully led UBS Asset Management’s integrated investments capabilities, driving performance for its clients.

Nationality: American (US) | Year of birth: 1967

Robert Karofsky was appointed Co-President of the Investment Bank in 2018. He became sole President in 2021. Before joining UBS, he acquired know-how in investment banking as an analyst and trader, working for various financial institutions such as Morgan Stanley, Deutsche Bank and AllianceBernstein. He then became Global Head of Equities at UBS, responsible for driving UBS’s growth strategy for equities globally. In 2021, Mr. Karofsky was appointed to the additional role of UBS GEB sponsor to co-lead the AI, Data and Analytics center of expertise, along with Mike Dargan.

Nationality: Swiss and German | Year of birth: 1965

Sabine Keller-Busse was appointed President Personal & Corporate Banking and President UBS Switzerland in 2021, heading the leading universal bank in Switzerland. In her previous role as Group COO, she oversaw global functions such as technology, operations, human resources and corporate services. She has been pivotal in driving business alignment, and digital and cultural transformation, while also facilitating business growth as President UBS Europe, Middle East and Africa. Ms. Keller-Busse also brings in-depth experience regarding financial market infrastructure, having served on the Board of SIX Group for nine years.

Nationality: Singaporean | Year of birth: 1960

Edmund Koh has been President UBS Asia Pacific since 2019. He is a financial sector veteran, with more than 30 years in senior roles in financial services, including as Head Wealth Management Asia Pacific, Country Head Singapore and Head Wealth Management South-East Asia and Asia Pacific Hub for UBS. Before working for DBS Bank in Singapore, Mr. Koh was CEO for Prudential Assurance and Alverdine Pte Ltd, both companies based in Singapore. He joined UBS from Taiwan-based Ta Chong Bank, where he served as President and Director.

Nationality: Italian | Year of birth: 1971

Barbara Levi has been Group General Counsel since 2021. A qualified attorney-at-law, she has been admitted to the Supreme Court of the United States, the New York State bar and the bar of Milan, Italy, and has worked in several law firms in New York and Milan. Ms. Levi began her corporate career with Novartis Group in 2004 and worked there for 16 years, holding a number of senior legal roles across Europe. Before joining UBS, she served as Chief Legal Officer & External Affairs at Rio Tinto Group and, before that, as General Counsel. In both roles, she was a member of that company’s executive committee.

Nationality: Spanish | Year of birth: 1973

Beatriz Martin Jimenez joined the Group Executive Board as Head Non-Core and Legacy as well as President UBS EMEA of UBS Group AG in May 2023. Ms. Martin is also the UBS Chief Executive for the UK since 2019 and will continue in this role. Her previous UBS roles included Group Treasurer der UBS Group AG, Chief Transformation Officer for UBS Group AG, Chief Operating Officer for UBS Investment Bank, and Chief of Staff to the CEO for UBS Investment Bank. Before joining UBS in 2012, Ms. Martin held various roles in fixed income sales and trading at Morgan Stanley and Deutsche Bank. With her experience in markets, Ms. Martin has a deep understanding of the industry and has built an extensive network and credentials globally, in addition to her restructuring experience as well as a thorough knowledge of our Investment Bank. As Group Treasurer, she also has proven history with managing liquidity, funding, capital and allocation of financial resources to align with the Group strategy.

Nationality: Swiss | Year of birth: 1965

Markus Ronner has been Group Chief Compliance and Governance Officer since 2018. He has been with UBS for more than 40 years and held various positions across the firm, including manager of the Group-wide too-big-to-fail program, COO Wealth Management & Swiss Bank, Head Products and Services of Wealth Management & Swiss Bank, COO Asset Management, and Head Group Internal Audit. In his current position, he is responsible at the Group level for the control of all non-financial risks, governmental and regulatory affairs, as well as investigations and governance matters. From 2022 until October 2023, he served as Chairman of UBS Switzerland AG, the leading Swiss universal bank.

Nationality: Swiss | Year of birth: 1974

Stefan Seiler has been Head Group Human Resources & Group Corporate Services of UBS Group AG and UBS AG since May 2023. He leads the combined Group Human Resources and Corporate Services function, ensuring effective and efficient alignment of our people, real estate and vendor management strategies. He started his career at the Swiss Military Academy at ETH Zurich and, after working for Credit Suisse from 2002 to 2006, he returned to the Swiss Military Academy as Department Head of Leadership and Communication. Mr. Seiler joined UBS in 2011 and became Group Head HR in 2018 after gaining experience as Head HR for Region Switzerland and Group Functions as well as Global Head Talent and Recruiting. 

Nationality: American (US) | Year of birth: 1965

Todd Tuckner was appointed to the Group Executive Board of UBS Group AG in May 2023 and became Group CFO after the transaction with Credit Suisse closed. He was CFO and Head Business Performance and Risk Management for our Global Wealth Management business. Mr. Tuckner joined UBS in 2004 after working for KPMG for 17 years and has since held various leadership roles across the Group Finance function. He brings both an in-depth knowledge of UBS as well as experience across multiple areas of finance, including tax, controlling, accounting, reporting, risk management and business advisory.