Grant Thornton Spain joins the multinational platform Grant Thornton Advisors
Headquartered in the United States and backed by an investor group led by New Mountain Capital.
This transaction will drive the growth of the Spanish firm, providing access to new markets, differentiated service offerings, and new technologies.
Alongside Spain, the platform is also accelerating its growth with the inclusion of Grant Thornton in France and Belgium.
Grant Thornton Spain announced today that it will join the multinational platform of professional services firms, Grant Thornton Advisors, headquartered in the United States.
This integration will enable the firm to grow in the coming years through expansion into new markets and the addition of new services, offering greater added value to its clients.
The platform will equip the firm’s professionals and teams with advanced technologies and will create new and attractive career development opportunities for both current and future talent, while preserving everything that has made the firm a key player in the professional services market in Spain.
Grant Thornton Advisors, headquartered in the United States and backed by an investor group led by New Mountain Capital, established its multinational platform in January 2025. This platform has driven a unique and cohesive multidisciplinary approach, with a unified offering of Advisory, Legal, and Tax services, as well as independent Audit and Assurance services in each of the markets where it operates.
A rapidly expanding Platform
Alongside Spain, Grant Thornton Advisors also announced today the addition of Grant Thornton France and Grant Thornton Belgium to the platform, demonstrating the rapid expansion of its operations in Europe.
These new additions join the firms that were already part of the platform’s network: Grant Thornton Ireland, United Arab Emirates, Netherlands, Switzerland/Liechtenstein, Luxembourg, Cayman Islands, and the Channel Islands.
A transaction that decisively enhances the seamless connectivity among these firms and clearly strengthens their capabilities and service reach across Europe. Clients will benefit from even broader access to high-quality services, industry expertise, and innovation, further reinforced by significant investments in technology and talent.
According to Ramón Galcerán, President of Grant Thornton Spain:
“The step our firm is taking today by joining the multinational platform Grant Thornton Advisors is historic and fills us with excitement. It marks the beginning of a new era of growth, expansion, and consolidation of our professional services model in Spain—one that clients recognize as close and of the highest quality. This platform has already demonstrated clear benefits for the firms that are part of it, and by joining, we will decisively drive our growth with unprecedented access to new technologies, knowledge and capabilities, and large-scale capital and investment.”
According to Jim Peko, CEO of Grant Thornton Advisors LLC:
“The expansion of the platform into France, Spain, and Belgium marks a pivotal chapter in our journey and represents a major shift in how our industry serves clients. We are strengthening our commitment to grow through new services, sectors, and geographies. We also want this platform to become a benchmark for new talent and technology, built on a solid foundation of quality and a unique corporate culture. We set out to build a differentiated project—and that is exactly what we are doing.”
Steve Tennant, CEO of Grant Thornton Ireland, highlights:
“Ireland was the first pillar in the strategic multinational expansion of Grant Thornton Advisors, and we have seen firsthand the benefits of integrating our people, resources, and services into a unified platform. The addition of France, Spain, and Belgium strengthens that momentum, creating an unprecedented presence in the European Union and in many other markets.”
In recent weeks, Grant Thornton Advisors has also announced transactions aimed at strengthening its advisory offering. Among them are Auxis, a pioneer in business process outsourcing and modernization services, and Stax, a firm specialized in commercial due diligence and value creation for the private equity sector.
The entire Grant Thornton Advisors platform will continue to be part of the Grant Thornton International Limited (GTIL) network, which brings together member firms in over 150 markets worldwide, further reinforcing the global relevance of this professional services network.
All transactions are expected to close in the coming weeks. Grant Thornton Spain has been advised by PwC and Baker McKenzie.