Siemens Mobility has signed an agreement to acquire several key businesses from the Italian group MERMEC, a company specializing in railway signalling, electrification, diagnostics, and measurement technologies. The transaction aims to strengthen Siemens’ global portfolio in the field of railway technology, with a focus on diagnostics, data analysis, and signaling systems.
The parties have not disclosed the value of the transaction. Its completion is subject to customary approvals and is expected by the end of the calendar year 2026.
MERMEC is one of Italy’s leading suppliers of signaling systems for mainline rail networks, digital diagnostic technologies, high-precision measurement trains, and solutions for rail infrastructure inspection. The group is headquartered in Monopoli, Italy, and was founded in 1970.
Siemens Expands Its Industrial Presence in Italy
Through this acquisition, Siemens Mobility is expanding its industrial footprint in Italy as part of its global rail signaling business. The company states that the transaction will significantly strengthen its diagnostics portfolio and improve access to the Italian market.
“By combining MERMEC’s technological expertise and market access with Siemens Mobility’s global presence and technological leadership, we are strengthening our capabilities in diagnostics, asset intelligence, and signaling. This step expands our industrial footprint in Italy within our world-leading global signaling business and significantly enhances our global diagnostics portfolio,” said Michael Peter, CEO of Siemens Mobility.
The company claims that integrating Siemens’ expertise in urban signaling with MERMEC’s presence in Italy’s main rail infrastructure will support the modernization and digitalization of Italy’s national rail network.
Matera becomes an industrial hub for diagnostics
An important element of the transaction is the inclusion of the Ferrosud plant in Matera, presented by Siemens as a strategic asset. Siemens Mobility intends for the Matera facility to become an industrial hub for next-generation diagnostic technologies.
The employees, facilities, and industrial capabilities of the acquired businesses will be integrated into Siemens Mobility’s global innovation ecosystem. The company expects synergies, particularly through cross-selling and the expansion of the integrated portfolio.
The transaction is expected to contribute to Siemens’ growth targets and to be within the Mobility division’s target margin by the second year after completion.
Diagnostics, measurement, and data analysis
The acquisition is particularly significant for the railway diagnostics sector. Siemens Mobility states that it will be able to combine its own asset intelligence and diagnostics capabilities—including on-board and depot-based solutions—with MERMEC’s portfolio of diagnostic vehicles equipped with measurement systems and software for railway infrastructure inspection.
The goal is a scalable, globally covered diagnostics and analytics platform, supported by the Siemens Mobility international network and its customer base.
MERMEC operates in areas such as signaling, electrification, diagnostics, digital asset analytics platforms, and advanced inspection technologies. The company is also known for the measurement trains and vehicles used to assess the condition of railway infrastructure.
What the transaction includes
The acquisition covers MERMEC’s key businesses in the areas of track signaling in Italy, electrification, telecommunications, diagnostics, data analytics, and global data infrastructure.
However, the transaction does not include MERMEC’s investments in Angelstar S.r.l., Mont Saint Michel S.A.S., its subsidiary Compagnie des Signaux S.A.S., and MERMEC Deutschland.
The businesses included in the transaction have approximately 1,700 employees, serve customers in over 70 countries, and generated revenues of approximately 430 EUR million in fiscal year 2025.
“A secure future” for employees
Vito Pertosa, chairman of Angelo Holding, the group that controls MERMEC, explained the decision by citing the need to ensure the company’s continuity and a global framework for employees.
“Formally, I have been retired for nine months; currently, my health is not in the best condition, and my children are pursuing their own independent paths with their companies. For this reason, I sought out a very solid group in the sector to guarantee a secure future for my valued colleagues, who have contributed to transforming MERMEC into the company it is today, wherever they may be. The integration into Siemens will provide them with a global environment strongly focused on innovation and sustainable growth. The transaction will allow me to invest in the other companies within my industrial holding, as well as to contribute to the development of businesses in southern Italy, which need to grow and create new, high-quality jobs,” said Vito Pertosa.
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