Siemens Mobility has announced a major strategic move in the global railway industry, signing an agreement to acquire several key businesses of Italy’s MERMEC Group, significantly expanding its capabilities in signaling, diagnostics, and railway infrastructure technologies.
The acquisition marks a notable strengthening of Siemens Mobility’s rail technology portfolio, particularly in the rapidly growing fields of diagnostics, asset intelligence, and infrastructure measurement, while also deepening the German group’s industrial presence in Italy. For Siemens, the transaction represents more than a simple acquisition. It is a clear statement of intent in a railway market increasingly focused on digitalization, predictive maintenance, and smarter infrastructure management.
A major boost for rail diagnostics
One of the most significant aspects of the deal is Siemens’ expanded position in railway diagnostics. MERMEC has built a strong international reputation in advanced inspection technologies, including diagnostic trains, infrastructure measurement systems, and digital asset analytics platforms. Integrating these capabilities with Siemens Mobility’s existing onboard and depot-based asset intelligence solutions could create a powerful global diagnostics platform.
This would give Siemens customers access to a broader suite of services, combining infrastructure inspection, measurement, software analytics, and predictive maintenance tools under one roof. With railway operators worldwide under pressure to improve reliability while reducing maintenance costs, this area is becoming increasingly strategic.
Italy becomes even more important
The acquisition also substantially expands Siemens Mobility’s industrial footprint in Italy. A key asset in the transaction is the Ferrosud facility in Matera, which Siemens intends to develop into an industrial hub for next-generation railway diagnostics technologies.
The combination of Siemens’ urban signaling expertise with MERMEC’s established presence in Italy’s mainline rail infrastructure sector could also play a role in accelerating modernization and digital transformation across the national network. The businesses included in the acquisition cover Italian wayside signaling, electrification, telecommunications, diagnostics, analytics, and global data infrastructure.
However, some activities remain outside the scope of the deal, including MERMEC’s stakes in Angelstar, Mont Saint Michel (including Compagnie des Signaux), and MERMEC Deutschland.
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1,700 employees and global reach
The businesses being acquired employ around 1,700 people and serve customers in more than 70 countries. In fiscal year 2025, these operations generated approximately €430 million in revenue, making the transaction substantial both strategically and financially, even though the parties have not disclosed the purchase price.
Siemens expects the acquisition to support its revenue growth targets and contribute positively to earnings by the second year after closing. Completion of the transaction is subject to customary regulatory approvals and closing conditions, with finalization expected by the end of 2026.
The end of an era for Angel Holding?
The announcement also carries emotional significance for MERMEC founder Vito Pertosa, President of Angel Holding, who framed the move as a decision aimed at securing long-term stability for the company’s workforce. Having formally retired in recent months, Pertosa said joining Siemens would provide employees with access to a larger international environment focused on innovation and sustainable growth, while allowing him to focus investments on other businesses within his industrial group and support further development in Southern Italy.
Founded in 1970 and headquartered in Monopoli, MERMEC has grown into one of Italy’s most important railway technology companies. With this acquisition, Siemens Mobility is making it clear that advanced diagnostics, digital infrastructure intelligence, and integrated rail technologies will be central to its future strategy.