Mike McGuire serves as an independent board director for Springline Advisory. From January 2015 to July 2019, he served as CEO at Grant Thornton LLP, the U.S. member firm of Grant Thornton International Ltd, one of the world’s leading organizations of independent audit, tax, and advisory firms.

With more than 8,000 colleagues in 59 offices across the country, Mike worked with his team to deliver to Grant Thornton’s clients a culture of quality, innovation, and collaboration that led to consistent, high-quality results. He believes in the power of curiosity and creativity, and of dedicated, passionate people. 

During his 35+ years in the profession, Mike worked with high-growth, startup, and middle-market companies in a diverse range of industries. Much of his experience includes capital markets transactions and advisory services on M&A strategies and deal structure. His specialties include advisory, audit, cultural enrichment, technology innovation and leading industry disruption through enterprise-wide transformation.

Through it all, he learned that culture is the most important asset for any organization. It’s his near-obsession with building a strong, positive and distinctive culture at Grant Thornton that he believes was the key differentiator as they aimed to innovate and transform our profession for the future.