Leadership Change at SIX with André Helfenstein to Assume Chairmanship After Thomas Wellauer

Leadership Change at SIX with André Helfenstein to Assume Chairmanship After Thomas Wellauer

(IN BRIEF) SIX has named André Helfenstein as its next Chairman, taking over from Thomas Wellauer on 1 January 2026. Wellauer, who has served as Chairman since 2020, will continue as a Board member until the 2026 Annual General Meeting to facilitate a smooth handover. Helfenstein currently sits on the SIX Board and previously served as CEO of Credit Suisse (Switzerland) Ltd. from 2020–2024, with earlier leadership roles across the bank’s client businesses and experience at Boston Consulting Group. Both leaders commented positively on the transition, with Wellauer noting SIX’s strong foundations and Helfenstein outlining priorities to strengthen services, infrastructure and long-term competitiveness in the financial market.

(PRESS RELEASE) ZURICH, 5-Dec-2025 — /EuropaWire/ — SIX has announced that André Helfenstein will assume the role of Chairman of the Board of Directors effective 1 January 2026, following the planned departure of current Chairman Thomas Wellauer, who will step down at the end of 2025. As previously communicated in May 2025, Wellauer will not stand for re-election at the 2026 Annual General Meeting, but will remain on the Board until 6 May 2026 to ensure continuity during the transition.

Helfenstein, who has served as a member of the SIX Board since 2020, brings extensive leadership experience within the financial sector. From 2020 to 2024 he was CEO of Credit Suisse (Switzerland) Ltd., overseeing the Group’s Swiss operations, and prior to that held senior leadership roles across private, corporate and institutional banking within Credit Suisse since 2007. Earlier in his career, he spent over ten years at the Boston Consulting Group as Partner & Managing Director. He holds a master’s degree in business administration from the University of St. Gallen.

Reflecting on his tenure, Thomas Wellauer stated that leading SIX through a period marked by economic and political change has been a privilege, expressing confidence in Helfenstein’s ability to continue strengthening SIX’s position. He emphasised the company’s innovative capability and strong foundations that support both Swiss and international financial markets.

Commenting on his appointment, Helfenstein thanked the Board for its trust and highlighted SIX’s role in maintaining Switzerland’s financial market competitiveness. He noted that his focus will be on advancing the company’s development, enhancing infrastructure and service quality, and delivering value for customers and shareholders in the years ahead.

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Dr. Alain Bichsel
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About SIX
SIX serves the Swiss and Spanish financial centers and a broad international client base, offering stable and efficient infrastructure services. SIX operates stock exchanges and provides services in post trading, financial information as well as the payments business. The company is owned by its users (about 120 financial institutions). With over 4,400 employees and a presence in 19 countries, SIX generated operating income of CHF 1.6 billion and EBITDA of CHF 443.7 million in 2024.
www.six-group.com

SOURCE: SIX Group AG