Guidehouse Acquires Grant Thornton Public Sector Advisory Practice

New Mountain Capital-Backed Grant Thornton Advisors to Combine With Grant Thornton Ireland Advisory and Tax Businesses

October 24, 2024

Professional Services

Grant Thornton Advisors LLC (U.S.) and Grant Thornton Ireland announced an agreement to combine Grant Thornton Advisors with Grant Thornton Ireland’s advisory and tax businesses. The deal is backed by an investor group led by New Mountain Capital and is expected to close in the first quarter of next year, subject to regulatory approval.

Bain Capital Private Equity Acquires Guidehouse from Veritas Capital

December 14, 2023

Consulting

Bain Capital Private Equity completed the acquisition of Guidehouse from Veritas Capital for $5.3 billion. Guidehouse, a McLean, Virginia–headquartered consulting and managed services firm with more than 17,000 professionals, will continue to be led by CEO Scott McIntyre as it pursues further organic and inorganic growth under Bain.

New Mountain Capital Makes Growth Investment in Grant Thornton LLP

March 15, 2024

Accounting & Tax

New Mountain Capital has made a growth investment in Grant Thornton LLP to accelerate the firm's business strategy, support targeted investments in talent, technology and infrastructure, and enable strategic acquisitions. The transaction (subject to regulatory approvals) will adopt an alternative practice structure separating attest and non-attest services, and is expected to close in the second quarter of 2024.

Grant Thornton Advisors Acquires Stax

September 22, 2025

Professional Services

Grant Thornton Advisors LLC has closed its transaction to acquire Stax, a strategy consulting firm focused on commercial due diligence, value creation, and exit-planning services for private equity firms and their portfolio companies. The deal adds Stax’s ~300 team members to Grant Thornton Advisors’ multinational transaction advisory platform, with the combined firm serving almost 70% of the U.S.-based Private Equity International 300.

New Mountain Capital-backed Grant Thornton Advisors platform acquires Grant Thornton UAE

April 23, 2025

Professional Services

Grant Thornton UAE announced it reached an agreement to unite with Grant Thornton Advisors LLC, adding the UAE firm to the multinational Grant Thornton Advisors platform. The platform is backed by an investor group led by New Mountain Capital and is intended to broaden unified advisory and tax capabilities across regions and service lines.

Guidehouse (Veritas Capital-backed) Acquires Navigant Consulting for $1.1 Billion

August 2, 2019

Professional Services

Guidehouse, a Veritas Capital portfolio company, agreed to acquire Navigant Consulting, Inc. for approximately $1.1 billion in cash ($28.00 per share). The deal combines Guidehouse's public-sector consulting strengths with Navigant's commercial expertise across healthcare, energy and financial services to create a global consultancy with expanded scale and capabilities.