News

August 18, 2026

BST & Co. and Gallagher, Flynn & Company Complete Merger

BST & Co. and Gallagher, Flynn & Company  announced the completion of their merger and the launch of BST Gallagher Flynn, a regional accounting and advisory firm positioned to serve clients across the Northeast and beyond.

The merger unites two highly respected firms with longstanding reputations for client service, technical excellence, and trusted relationships. Together, the combined organization gives clients access to broader expertise across assurance, tax, advisory, outsourced services, and specialized consulting disciplines, all through a single trusted relationship.

As client needs grow more complex, the combined firm has greater capacity to invest in technology, innovation, and talent while preserving the personalized service and responsiveness that have long defined both organizations.

“Throughout this process, it became clear that our firms share many of the same values and aspirations,” said Ron Guzior, Managing Partner of BST & Co. “We are both committed to exceptional client service, investing in our people, and building organizations positioned for long-term success. By bringing our firms together, we are creating real value for our clients and new opportunities for our professionals.”

Clients of both firms will continue working with the advisors and professionals they know and trust, now supported by the wider capabilities of the combined organization.

The merger also strengthens the firm’s ability to deepen industry specialization, expand advisory capabilities, and continue evolving alongside the changing needs of clients and the profession.

“For generations, both firms have built their success on relationships,” said Jason Hamilton, Managing Partner of Gallagher, Flynn & Company. “As we spent time getting to know one another, we found strong alignment in how we serve clients, develop our people, and think about the future. This merger is not about changing what made either organization successful. It is about building on those strengths and creating something even stronger together.”

Operating as BST Gallagher Flynn, the firm will continue serving clients from its existing offices while bringing together the collective strengths of professionals across the organization. The combination reflects a shared commitment to growth, innovation, and long-term stewardship while preserving the relationship-driven culture and commitment to excellence that have defined both firms throughout their histories.

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