SMART Holding AG, as an investment portfolio company under Swiss Treuhand Holding AG managed by Winterberg Advisory GmbH, has acquired Streicher & Brotschin Treuhand AG located in Basel, as well as their related group companies.

Steinhausen, Switzerland, October 2026 – SMART Holding AG has successfully completed the acquisitions of Streicher & Brotschin Treuhand AG, Streicher & Brotschin Revision AG, as well as AEQUITAS AG in Basel. Streicher & Brotschin Treuhand AG is one of the oldest trust companies in the Basel region, providing clients with trust, tax, auditing, and consulting services since 1927, with a strong emphasis on high-quality standards.

Streicher and Brotschin Treuhand AG, Director and Board Member, Charles Tissier stated: "We are very pleased to have reached an agreement with SMART, which we consider to be the ideal successor partner in our eyes. We are impressed by its culture and professionalism, and we believe that together with SMART, we will be able to successfully continue and develop our trust business."

Streicher and Brotschin Treuhand AG, a member of the board of directors, Michel Rohrer added: "For our customers, everything will remain the same. All contacts will continue to provide services under the original conditions. Charles and I will also continue to stay in our positions and will continue to hold shares in the company. We are already looking forward to discussing and jointly implementing current trends such as digitalization and artificial intelligence with SMART!"

SMART Director Stefan Widmer stated: "We warmly welcome the new colleagues from Basel to SMART and look forward to working with them. We believe that together, we will provide our customers with the best quality and the best solutions. With our network and our long-term experience in implementing succession solutions, we aim to become one of the leading industry groups in Switzerland."

Regarding SMART Holding AG and SMART Treuhand AG

SMART was founded in 2017 by Stefan Widmer, St, and phanie Rauchenstein. Since then, it has acquired and integrated several trust and auditing companies, and has established branches in Altendorf, Basel, Einsiedeln, Glarus, Hü nenberg, Ilanz / Glion, Stans, Zü rich, and Zug. The services provided by SMART include the regular operations of the trust industry: accounting and reporting, payroll management and human resources, administrative support, as well as tax filing and value-added tax services. In addition, the group also offers auditing, legal, and tax consulting services, especially in the areas of digitalization and process optimization. SMART currently employs nearly 100 people at 9 locations, mainly serving small and medium-sized enterprises and individual clients.

About Schweizer Treuhand Holding AG

Schweizer Treuhand Holding AG is a "buy, build, and technologize" platform for Swiss trust companies and consulting firms. The group is headquartered near Steinhausen in Zug and pursues an aggressive expansion strategy through mergers and acquisitions, collaborations, and organic growth, especially in the context of succession arrangements. The platform is also committed to continuously adopting the latest and most innovative technologies, from digitalization to artificial intelligence, while pledging to provide customers with the highest standards of quality. The group is setting new standards for the industry and offering attractive career development opportunities for all its employees. The management team holds shares in Schweizer Treuhand Holding AG, thus forming a vibrant community of entrepreneurs.

Regarding Winterberg Advisory GmbH and Winterberg Group AG

Winterberg Group AG is headquartered in Zug and operates as an independent family office founded by its founders. Winterberg primarily invests in small and medium-sized enterprises in German-speaking regions, while also considering startups and real estate investments on a selective basis. Winterberg Advisory GmbH is a general partnership and fund manager, regulated by the German authority BaFin. Winterberg Advisory has established several private equity funds and invests in Schweizer Treuhand Holding AG through its subsidiary Winterberg Investment XI. The two managing partners, Ralph Nowak and Fabian Kr, along with her, manage Schweizer Treuhand Holding AG through the board of directors.

For media inquiries, please contact: presse @ schweizer-treuhand.ch

Edit Note: Whenever quoting the provided statements and information, please indicate Schweizer Treuhand Holding AG.

For more information about Streicher and Brotschin Treuhand AG, please refer to: www.sbtbs.ch

For more information about Streicher and Brotschin Revision AG, please refer to: www.sbrevision.ch

For more information about AEQUITAS AG, please refer to: www.aequitas.ch

For more information about SMART, please refer to: www.smarttreuhand.ch

For more information about Winterberg Advisory GmbH and Winterberg Group AG, please refer to: www.winterberg.group