LATHAM, NY and SOUTH BURLINGTON, VT,
August 18, 2026 —
BST & Co. and Gallagher, Flynn & Company today 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.
Jason Hamilton, Gallagher Flynn Managing Partner and Ron Guzior, BST Senior Executive mark a new chapter of collaboration.
About BST Gallagher Flynn
BST Gallagher Flynn is a regional accounting and advisory firm formed through the merger of BST & Co. and Gallagher, Flynn & Company. The combined firm provides assurance, tax, advisory, outsourced accounting, consulting, valuation, forensic accounting, and other specialized services to businesses, nonprofit organizations, governmental entities, and individuals across the Northeast and beyond. With headquarters in Latham, New York and South Burlington, Vermont, the firm brings together the collective expertise, industry depth, and relationship-driven culture of both organizations to help clients navigate an increasingly complex business environment with confidence.
About BST & Co.
Founded in 1976, BST & Co. is a regional accounting and advisory firm providing assurance, tax, consulting, valuation, forensic accounting, outsourcing, and specialized advisory services to businesses, nonprofit organizations, governmental entities, and individuals. Celebrating its 50th anniversary in 2026, BST serves clients throughout the Northeast and beyond from its headquarters in Latham, New York. The firm’s capabilities include Accounting & Advisory, Cybersecurity, Marketing, Talent Strategies, valuation, forensic accounting, and other specialized advisory services.
Learn more: www.bstco.com
About Gallagher, Flynn & Company
Founded in 1961, Gallagher, Flynn & Company is a leading accounting and advisory firm providing assurance, tax, advisory, outsourced accounting, and consulting services to organizations and individuals across a broad range of industries. Headquartered in South Burlington, Vermont, the firm is recognized for its trusted relationships, technical expertise, and client-focused approach.
Learn more: www.gfc.com
The Next Chapter Begins
Great things happen when two strong firms come together with a shared vision. Managing partners Ron Guzior and Jason Hamilton talk about the decision to merge, the opportunities ahead, and why they’re energized by what can be accomplished together.
Your questions, answered.
This merger reflects a shared belief that greater opportunity, broader capability, and stronger long-term potential can be achieved together than either firm could create independently. By bringing together our strengths, expertise, and shared values, we are creating a stronger organization positioned to better serve clients, invest in our people, and continue building for the future.
Together, we will be better positioned to expand expertise, deepen specialization, invest in technology and innovation, and support increasingly complex client needs. This combination creates new opportunities to strengthen how we serve clients while continuing to build a firm designed for long-term success.
Clients will benefit from the combined strengths of two highly respected firms with a shared commitment to exceptional service, trusted relationships, and professional excellence. Over time, clients will gain access to broader expertise, expanded capabilities, and additional resources across the combined organization.
The qualities that have always defined both firms will remain unchanged. Clients can continue to expect personalized service, technical expertise, responsiveness, and long-standing relationships built on trust. Our commitment to helping clients make informed, confident decisions remains at the center of everything we do.
Together, we are creating a broader and more integrated professional services firm with expanded capabilities across accounting, assurance, tax, advisory, outsourced services, talent strategies, valuation, forensic accounting, transaction advisory, marketing advisory, client accounting services, and other specialized areas. The combination strengthens our ability to bring broader expertise, deeper specialization, and expanded advisory capabilities to clients across industries and markets.
No. Clients will continue working with the advisors and teams they know and trust. As the firms come together, clients may gain access to additional specialists and expertise from across the combined organization, while maintaining the relationships that are important to their success.
This merger creates new opportunities for people to grow, collaborate, lead, and help shape the future of the combined firm. By bringing together the strengths of both organizations, we are creating broader opportunities for professional development, leadership growth, industry specialization, and collaboration across teams and offices. Just as importantly, we remain committed to preserving the relationship-driven culture, entrepreneurial spirit, and sense of community that have long defined both firms.
The combined firm will bring together more than 230 professionals across offices in New York, Vermont, New Hampshire, and India. This expanded footprint strengthens our ability to serve clients with greater depth, broader perspectives, and enhanced resources across markets, industries, and service lines.
Yes. Community involvement has long been an important part of both organizations and will remain a priority moving forward. We are committed to continuing to support the communities we serve through volunteerism, leadership involvement, professional expertise, and charitable contributions.
The merger became effective on August 5, 2026. Integration activities will continue over the following months as we thoughtfully bring together capabilities, systems, and resources while remaining focused on delivering a seamless experience for clients.
Open communication remains a priority throughout this transition. We will continue providing updates and communicating directly with clients and other stakeholders regarding any changes that may affect them as integration activities progress.
We believe the future will be stronger because we are building it together. By combining the strengths, expertise, and cultures of both organizations, we are creating a firm positioned to grow with intention, lead with purpose, and continue creating meaningful impact for our clients, our people, and the communities we serve. Our goal is to preserve what makes both firms distinctive while building an even stronger future together.
We’d love to hear from you.
As we begin this exciting new chapter, we’re committed to open communication and exceptional service. If you have any questions, feedback, or would like to learn more about what this merger means for you, please contact us. We look forward to connecting with you.
Media inquiries should contact Mark Bardack at Ed Lewi Associates — mbardack@edlewi.com