Credit: Arendt

On Wednesday 26 November 2025, Luxembourg-based Arendt Investor Services (AIS) announced a new partnership with BlackFin Capital Partners (BlackFin), aiming to support AIS' growth and international expansion.

Under this agreement, BlackFin will become the majority shareholder of the company and subject to the Commission de Surveillance du Secteur Financier's (CSSF) approval and other customary procedures, while Arendt will retain a significant stake.

According to AIS, this agreement marks an important step in the company’s development strategy by reinforcing its position in the Luxembourg financial services market and enabling it to scale its operations into new jurisdictions. The scope of the transaction also includes the third-party Alternative Investment Fund Manager (AIFM), AManco.

According to the partners, BlackFin brings sector expertise and operational insight to support AIS' long-term objectives, while maintaining the company’s focus on client service and regulatory compliance. BlackFin is a private equity and venture capital investor dedicated exclusively to financial services, with over 100 investments across Europe. The firm has been active in Luxembourg for over ten years with the support of Arendt.

AIS celebrated its fifteenth anniversary in 2024 and has grown in recent years. The company aims to expand its technological expertise and services to other European markets. AIS provides fund administration, corporate, governance, anti-money laundering (AML), compliance and tax services, as well as third-party AIFM and depositary services. With a team of 320 professionals, AIS is a Professional of the Financial Sector (PFS) supervised by the CSSF and is ISO 22301 certified.

Eric May, Founding Partner of BlackFin, commented: "With its one-stop-shop strategy and its culture of excellence inherited from Arendt & Medernach, AIS offers a differentiated value proposition for any investor looking to operate in Europe. We have a long-standing relationship with Arendt and greatly appreciate their unmatched reputation and leading position in Luxembourg. We are thrilled to have the opportunity to support AIS in the next stage of its development, leveraging our deep expertise in the fund industry and our track record in scaling asset servicers on an international level. We look forward to working with Christian Heinen and his team to achieve our vision for the company."

Christian Heinen, Arendt Investor Services CEO, noted: "Our journey has been shaped by exceptional people, trusted clients and a relentless focus on service excellence, supported by the smart use of technology. With the strength of BlackFin as our new strategic partner and Arendt continuing as a valued partner, we are ready to take our growth and ambition to the next level - strengthening our position in Luxembourg and expanding our reach across Europe."

By remaining a shareholder, Arendt will continue to support the long-term development of AIS and maintain synergies with its legal and consulting services.

Claude Niedner, Chairman of the Board of Directors of Arendt Investor Services and Co-Chair of Arendt, added: "The long-term vision that has guided the development of Arendt Investor Services, together with Arendt & Medernach and Arendt Regulatory & Consulting, to date remains unchanged. The partners of Arendt continue to hold a significant minority stake in the company and are involved in strategic decisions. Together with Arendt Investor Services, we remain fully committed to delivering seamless and high-quality service to all our clients, ensuring continuity, responsiveness and the same standards of excellence that have defined our approach to date."

EO