- Based in the United States and backed by a group of investors led by New Mountain Capital.
- This operation will boost the growth of the Spanish firm, with access to new markets, offering differentiated services and new technologies.
- Along with Spain, the platform is also accelerating its growth with the inclusion of Grant Thornton in France and Belgium.
- Madrid, September 29, 2025
Grant Thornton Spain announced today that will join the multinational platform of professional services firms Grant Thornton Advisors, based in the United States. This acquisition will allow it to grow in the coming years. with the expansion into new markets and the incorporation of new servicesto offer greater added value to its customers.
The platform will equip the Firm's professionals and teams with tadvanced technologies and will establish new and attractive professional development opportunities for your current and future talent, maintaining everything that has made the Firm a benchmark player in the services market
professionals in Spain.
Grant Thornton Advisors, based in the United States and backed by a group of investors 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 in each of the markets in which the platform operates.
- A rapidly expanding platform
Along with Spain, Grant Thornton Advisors also announced today the Accession of Grant Thornton France and Grant Thornton Belgium to the platform, demonstrating a very rapid expansion of its operations in Europe. These new additions join the firms that were already part of the platform's conglomerate: Grant Thornton Ireland, United Arab Emirates, Netherlands, Switzerland/Liechtenstein, Luxembourg, Cayman Islands and Channel Islands.
An operation that decisively expands the seamless connectivity that These firms will have and a clear strengthening of its capabilities and service reach across Europe. Customers will benefit from even broader access to high-quality services, industry expertise, and innovation, further bolstered 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 enthusiasm. It marks the beginning of a new era of growth, expansion, and consolidation of our professional services model in Spain, which clients recognize as personalized and of the highest quality. This platform has already demonstrated clear benefits for its member firms, and by joining, we will decisively boost our growth with unprecedented access to new technologies and knowledge.”
and capabilities, and large-scale capital and investment.”
For Jim Peko, CEO of Grant Thornton Advisors LLC“The expansion of the platform into France, Spain, and Belgium marks a decisive chapter in our journey and represents a radical change in how our sector serves customers. We are reinforcing our commitment to growth through new services, sectors, and new geographies. We also want this platform to be a benchmark for new talent and technology, through a solid foundation of quality and a unique corporate culture. We set out to build a distinctive project, and that is exactly what we have achieved.” we are doing."
Steve Tennant, CEO of Grant Thornton Ireland, highlights that “Ireland was the first pillar in Grant Thornton's strategic multinational expansion Advisors, and we have seen firsthand the benefits of integrating Our people, resources, and services on a unified platform. The integration The presence of France, Spain, and Belgium reinforces this momentum, creating a presence without precedents in the European Union and in many other markets."
In recent weeks, Grant Thornton Advisors has also announced deals for strengthen their advisory offering. Between them, Auxis, a pioneer in outsourcing and business modernization services, and Stax, specializing 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.Grant Thornton Spain, which brings together member firms in more than 150 markets worldwide, further solidifies the network's relevance in the global professional services market. All transactions are expected to close in the coming weeks. Grant Thornton Spain was advised by PwC and Baker McKenzie.
- About Grant Thornton Spain
With 40 years of experience in the Spanish market, Grant Thornton Spain is one of the
One of Spain's leading professional services firms specializing in Audit and Assurance, Tax, Advisory, Legal, and Outsourcing. With a team of 900 professionals across 11 offices throughout the country: Madrid, Barcelona, Bilbao, Castellón, Las Palmas, Murcia, Pamplona, Valencia, Vigo, and Zaragoza. Part of the global professional services network Grant Thornton International, with 76.000 professionals in over 150 markets.
- About Grant Thornton Advisors
Grant Thornton provides professional services in the United States through two specialized entities: Grant Thornton LLP, a Certified Public Accountant (CPA) firm that offers audit and assurance services, and Grant Thornton Advisors LLC (which is not a Certified Public Accountant and Audit firm), which exclusively offers non-certification services, including tax services, financial advice, and consulting.
In January 2025, Grant Thornton Advisors LLC established a multinational, multidisciplinary platform. This platform offers world-class advisory and tax services, as well as independent audit services. Grant Thornton is part of the Grant Thornton International Limited network, which provides its member firms with access to more than 150 global markets.
- About New Mountain Capital
New Mountain Capital is a New York-based investment fund that focuses on building and growing businesses, not debt, to achieve long-term capital appreciation. The firm currently manages investment strategies in private equity, credit, and net leasing, with approximately $55 billion in assets under management. New Mountain Capital seeks out high-quality, leading growth companies in carefully selected industries and then works closely with their management to create value within them.
For more information about New Mountain Capital, visit newmountaincapital
- About Grant Thornton International
Grant Thornton International (GTI) is a global network of independent audit and assurance, tax, advisory, and legal firms providing professional services to private companies, public sector clients, and listed companies. As an umbrella entity, Grant Thornton International does not provide services directly to clients. Instead, its member firms, collectively known as Grant Thornton, offer services in more than 156 markets with 76.000 professionals worldwide. GTI focuses on strategy, risk management, and quality assurance, while supporting its member firms and promoting a cohesive global client experience.


