Nicolas Guillo
Professional Background
Nicolas Guillo brings over 20 years of experience in financial advisory and due diligence.
He began his career in 1999 at PwC, where he worked in both audit and Transaction Services. He later joined Alvarez & Marsal in 2018, before moving to Forvis Mazars in 2022 to strengthen the firm’s mid-to-large cap Transaction Services practice.
Career & Experience
Nicolas advises corporates and private equity funds on domestic and cross-border transactions.
He supports clients across all stages of their strategic operations, including:
- Buy-side and sell-side due diligence
- Financial and commercial assessments
- Transaction structuring support
- Post-deal investigations and disputes
- Financing-related advisory
He works on complex, international transactions, particularly in the following sectors:
- Industry: agrifood, construction materials, automotive, defence, aerospace
- Services: transport, logistics, distribution
Forvis Mazars Transaction Services
He is part of the Financial Advisory Services (FAS) department, which includes more than 200 professionals and supports over 250 transactions per year, the majority of which are international. The team covers:
- Acquisitions and disposals
- Due diligence (buy-side and vendor)
- Post-transaction disputes and investigations
- Financing and strategic advisory
Areas of Expertise
- Transaction Services (mid-large cap)
- Financial due diligence
- Private equity advisory
- Cross-border M&A transactions
- Post-deal advisory and dispute support
- Sector-focused transaction analysis
Professional Approach
Nicolas is recognized for:
- Strong expertise in complex, international transactions
- Deep experience across advisory firms and Big Four environments
- Ability to support both corporates and investment funds
- Strong sector specialization in industrial and service markets
Nicolas Guillo combines extensive Transaction Services expertise with deep international deal experience, supporting strategic transactions within Forvis Mazars.