SITINDUSTRIE Suisse SA plans to acquire 100% of Zwahlen et Mayr S.A., enhancing operational efficiency and market positioning in the Swiss manufacturing industry.

Transaction Overview

On September 18, 2025, Zwahlen et Mayr S.A. (ZM) announced that SITINDUSTRIE Suisse SA, a subsidiary of Groupe Bader SA, intends to increase its ownership stake in ZM to 100%. To achieve this goal, SITINDUSTRIE has launched a voluntary public tender offer for all outstanding shares of ZM listed on the SIX Swiss Exchange. The aim of SITINDUSTRIE is to acquire all shares of ZM and subsequently delist the company. This transaction is part of a strategy to sustainably develop the enterprise within a new corporate framework, capitalize on synergies, and reduce complexity along with associated costs.

Company Information

Founded in 1979, Zwahlen et Mayr S.A. is a leading manufacturer of welded stainless steel and nickel alloy tubes under the ZM Tubes brand. In 1990, the company expanded its product line to include drawn stainless steel tubes and, in 2021, further extended its offerings to seamless pipes. All products are manufactured in Aigle, near Lake Geneva, and are certified as 100% 'Swiss made'. Continuous investments in machinery and employee training have established ZM Tubes' excellent international reputation, characterized by high-quality products, exceptional customer service, and reliability in critical applications.

Industry Overview in Switzerland

The manufacturing industry in Switzerland plays a vital role in driving economic growth and innovation. Known for its high-quality production standards and advanced technology, the Swiss manufacturing sector excels in