Frankfurt, April 2026 – DQS Holding GmbH (“DQS”), a global provider of certification and business assurance services, today announced that it has entered into an agreement for Montagu, a leading mid-market private equity firm, to acquire a majority stake in the company. DIN will remain a significant shareholder and continue to support DQS as a long-term partner.
The transaction marks an important step in the continued development of DQS, with a clear focus on strengthening its global market position and expanding its capabilities in digital trust, medical devices, and ESG-related services.
Founded in 1985, DQS is a globally operating certification body supporting more than 20,000 customers across over 60 countries. The company provides independent assessment and certification services that enable organizations to meet regulatory requirements, improve performance, and build trust with stakeholders.
Through the partnership with Montagu and DIN, DQS will further invest in digitalization, technology-enabled certification services, and international expansion. The company will continue to operate within established accreditation frameworks and maintain its governance structures to ensure independence, impartiality, and consistent audit quality.
“With Montagu, we are taking the next step in the development of DQS,” said Ingo M. Rübenach, CEO of DQS. “They understand our business and bring strong experience in supporting growth and transformation in regulated markets. Together with Montagu and DIN, we will invest in digitalization, strengthen our global presence, and expand our capabilities in areas such as digital trust, ESG, and medical devices. Our focus remains unchanged: delivering independent, high-quality certification services to our customers worldwide.”
The closing of the transaction is subject to obtaining regulatory approval and other closing conditions.
Press contact:
Amsal Alihodzic
Director Marketing, Brand & Communications
DQS Holding GmbH
August-Schanz-Straße 21
60433 Frankfurt am Main
Tel.: +49 69 95427-270
E-Mail: [email protected]
DQS – Leveraging Quality, Driving Success.
DQS empowers organizations worldwide to build trust, drive innovation, and achieve sustainable growth by certifying the future of business. Founded in 1985, DQS has grown into a global leader in the assessment and certification of management systems, with a team of 3,000 highly qualified auditors delivering over 130,000 audit days per year in more than 60 countries. Through internationally recognized certifications across more than 200 standards, DQS helps businesses manage risks, ensure compliance, and unlock new opportunities in an evolving regulatory and business landscape.
Thinking beyond compliance, DQS is a trusted partner for digitalization, automation, and sustainability leadership. The company’s expertise spans cybersecurity and AI governance, ESG compliance, supply chain management, medical device safety, and future mobility. By leveraging advanced auditing methodologies, predictive analytics, and real-time insights, DQS supports organizations in future-proofing their operations while demonstrating their commitment to excellence and responsible business practices.