-

Mike McGuire to Retire from Grant Thornton

Move caps 37-year career of singular leadership

CHICAGO--(BUSINESS WIRE)--Mike McGuire, the former CEO of Grant Thornton LLP, will retire from the firm in February of this year, capping a 17-year career with Grant Thornton and 37 years in the accounting profession.

McGuire served as Grant Thornton’s CEO from 2014 to 2019, transitioning to the role of CEO emeritus last August. He was succeeded in the CEO post by Bradley J. Preber.

During his tenure as CEO, McGuire helped transform and grow Grant Thornton in numerous ways. Most notably, he built a distinctive and widely applauded firmwide culture and invested in an award-winning brand-development program. He also helped the firm deliver audit-quality results that are among the best in the accounting industry. And he added many large clients to Grant Thornton’s portfolio, while also driving record revenues for the firm.

“I am so pleased about the progress we’ve made growing our firm and serving clients’ needs during my time at Grant Thornton,” said McGuire. “Participating in this work as a teammate, partner and leader has been the greatest honor of my professional life.”

Current CEO Preber echoes this sentiment: “Mike has been an outstanding colleague and leader for our firm – and a good friend to all of us – for the past 17 years. Without his leadership, we would not be the firm we are today, with a clear opportunity to compete and win at the highest levels of our profession.”

Before taking the helm at Grant Thornton, McGuire served in several leadership posts, including national managing partner of Markets, Industry, People & Culture. He also served as managing partner of Grant Thornton’s Carolinas practice.

McGuire joined Grant Thornton in 2002 after 20 years at Arthur Andersen. He holds a bachelor’s degree in accounting and management information systems from Bowling Green State University.

He is active with several civic and business groups and expects to increase these activities.

About Grant Thornton LLP

Founded in Chicago in 1924, Grant Thornton LLP (Grant Thornton) is the U.S. member firm of Grant Thornton International Ltd, one of the world’s leading organizations of independent audit, tax and advisory firms. Grant Thornton, which has revenues in excess of $1.9 billion and operates more than 50 offices, works with a broad range of dynamic publicly and privately held companies, government agencies, financial institutions, and civic and religious organizations.

“Grant Thornton” refers to Grant Thornton LLP, the U.S. member firm of Grant Thornton International Ltd (GTIL). GTIL and the member firms are not a worldwide partnership. Services are delivered by the member firms. GTIL and its member firms are not agents of, and do not obligate, one another and are not liable for one another’s acts or omissions. Please see grantthornton.com for further details.

Grant Thornton LLP


Release Versions

More News From Grant Thornton LLP

Grant Thornton launches gtap to transform audit delivery across U.S. practice

CHICAGO--(BUSINESS WIRE)--The audit and assurance firm of Grant Thornton in the U.S., Grant Thornton LLP, today announced that it has launched gtap, a proprietary audit infrastructure that is redefining how the firm performs audits. By rolling out gtap — which stands for Grant Thornton Analytics & Automation Platform — the firm is ushering in a new era of AI-enabled, agent-assisted audit execution. This approach is allowing its U.S. Audit & Assurance professionals to continue their move...

Grant Thornton Advisors announces that Grant Thornton Australia is advancing plans to join its platform

CHICAGO & SYDNEY--(BUSINESS WIRE)--Grant Thornton Advisors LLC has announced that Grant Thornton Australia is advancing plans to join its multinational platform, a rapidly expanding group of nearly 20 aligned firms spanning the Americas, Europe, the Middle East and the Asia Pacific region. For the Grant Thornton Advisors platform, the transaction would bring additional scale and momentum tied to the Australian firm’s annual revenues of USD $282M (AUD $392M), 1,500 employees and six offices. It...

Grant Thornton announces Auxis named Leader and All Star Company on 2026 IAOP® Global Outsourcing 100®

CHICAGO & FORT LAUDERDALE, Fla.--(BUSINESS WIRE)--Grant Thornton announced today that Auxis, a business modernization leader and Latin America nearshore outsourcing pioneer, which is now part of Grant Thornton Advisors LLC (Grant Thornton), has been recognized as a Leader and All Star Company on the International Association of Outsourcing Professionals® (IAOP®) 2026 Global Outsourcing 100® list. Auxis also received a Sustained Excellence award, recognizing its inclusion on the prestigious list...
Back to Newsroom