TrustStone
TrustStone consists of a team of management consultants and lawyers who come from large international management consultancies and leading service companies and have many years of practical experience in supporting complex transactions.
What we do and who we are
TrustStone consists of a team of management consultants and lawyers who come from large international management consultancies and leading service providers and are passionate about what TrustStone does.
As a boutique M&A and corporate service provider, we at TrustStone know that every company is unique and needs tailor-made solutions to be successful. With our many years of experience in advising leading global companies—whether DAX, Fortune 500, private equity funds, major banks, or boutique law firms—we know the critical requirements before, during, and after transactions or market entry in Germany.
Our exclusive, personal service and in-depth industry knowledge enable us to offer a comprehensive range of corporate services, from support with M&A processes, company formation and administration to tax consulting. The founding partners of TrustStone are fully qualified lawyers and economists who focus on providing comprehensive support for your German company. Through our close cooperation with tax advisors, we ensure continuous, individual support from tax structuring to ongoing operations.
Our goal is to support you in your projects and relieve you of the burden where we can create real added value. We cover the entire spectrum of corporate service consulting, meeting both your expectations and our high standards. We are always available and communicate openly and transparently to provide you with the best possible service at every stage of a transaction or market entry in Germany.
You can rely on us as your dependable partner for all your business needs.
Aleksandra Marin
Managing Partner
Aleksandra is managing partner and founder of TrustStone and heads the Corporate Services division.
She studied law at the University of Augsburg and passed her second state examination at the Würzburg Regional Court.
After completing her studies, she worked as a client relations officer in the Corporate & Investment Banking division at Société Générale and then as a division manager at CSC, one of the world's leading providers of corporate services and corporate secretary services.
In this role, she served as (external) managing director for more than 60 companies and coordinated both the market entry of foreign companies in Germany and a large number of M&A processes in collaboration with external lawyers and M&A advisors.
She has an excellent network of lawyers, tax advisors, notaries, and banks in Germany.
Aleksandra is a native speaker of German and Bosnian and is fluent in English.
Norbert Bleibtreu-Busquets
Managing Partner
Norbert is managing partner and founder of TrustStone and heads the corporate finance, real estate, and M&A divisions.
He studied finance at the University of Cologne and founded several media companies. Norbert also founded his own investment company to invest in companies in the media sector and promote their growth.
For around ten years, he has focused on the reorganization and restructuring of small and medium-sized companies in a wide range of industries—either through active involvement in management or as an active investor. In recent years, he has supervised over 200 due diligence reviews.
Before co-founding TrustStone with Aleksandra, he was a partner in an M&A boutique in Frankfurt specializing in distressed M&A and real estate transactions.
Norbert has an excellent network in the German M&A and restructuring market.
He speaks German and English.
Our service catalog
Company Formation Support
Deal Readiness
e Support
Management &
administration
Domiciliation
Corporate
housekeeping
M&A and Corporate Finance
Covered sectors
TrustStone is engaged by clients to provide corporate services and administer a wide range of structures across various sectors, including investment holding companies, private equity and joint ventures, as well as corporate acquisitions and multinational corporations.
With our expertise, we can also assist you with restructuring processes or insolvency proceedings.
TrustStone is able to offer tailored corporate services solutions to a wide range of clients, from small and medium-sized enterprises (SMEs) to large multinational corporations, including publicly traded companies. Our ability to serve such a diverse range of businesses is based on our deep understanding of the unique needs and challenges faced by each type of organization. Whether we are providing support with regulatory compliance, corporate governance, administrative services, or strategic consulting, we ensure that every solution is carefully tailored to the specific goals and operational requirements of our clients, regardless of their size or global reach.
We are a recognized German business service provider committed to helping start-ups succeed in today's competitive market. With our comprehensive range of services, we offer start-ups the support they need to overcome the many challenges they face—from regulatory compliance and financial management to operational efficiency and strategic planning. Our goal is not only to help start-ups overcome obstacles, but also to identify and seize growth opportunities to ensure that they are well positioned to succeed in a dynamic business environment and achieve their long-term goals.
Thanks to our many years of experience in the real assets sector, we have specialized in key areas such as infrastructure, real estate, and renewable energies. By leveraging the combined knowledge and insights of our diverse, cross-border teams, we offer a comprehensive understanding of the unique challenges and opportunities in each of these sectors. This enables us to provide tailored solutions that meet the specific needs of our clients, whether it's navigating a complex regulatory environment, optimizing investment strategies, or promoting sustainable growth in emerging markets.
TrustStone has a deep understanding of the complex, multi-jurisdictional nature and time constraints associated with international M&A transactions. With our comprehensive legal background and extensive experience in mergers, acquisitions, and carve-outs, we help companies and private equity firms optimize every phase of these transactions. Our expertise in cross-border compliance and fundamental business administration ensures that even the most complicated transactions are completed within your specified timeframe. In addition, we accelerate the operational setup of companies after the transaction, regardless of where your business is located.
TrustStone offers a comprehensive service tailored to the unique needs of your family. We work in partnership with your family and free up your time by simplifying, clarifying, and making the management of your financial and non-financial affairs more flexible.
We offer solutions that are as sophisticated or as simple as your needs require, and we work closely with you and your advisors as "managers of managers" to protect and grow your family's wealth. In addition to financial management, we also take care of the countless other tasks that can be time-consuming, so you can focus on what matters most. With our many years of experience in providing comprehensive family office services, we also extend our expertise to non-financial matters, including relocation, education, and concierge services, offering you a seamless and supportive experience in all aspects of your life.
© 2026 - TrustStone