Expert profile

Juan Francisco Nasser

Partner

Highlights

Forensic accounting and corporate development professional.
Proven as a credible expert witness under cross-examination.
Specialises in commercial damages, contentious valuations, and M&A disputes.
Brings experience from a principal’s standpoint in transactions.
Has given expert testimony in both English and Spanish.

Services

Industries

Juan brings a rare combination of deep technical expertise, strategic insight, and clarity of communication to his role as an arbitration expert witness. He demonstrates a strong command of the factual and technical underpinnings of the disputes in which he is involved, yet always remains focused on what truly matters for the arbitral tribunal. His reports are rigorously prepared, persuasive and well-structured. His oral testimony is clear and measured.
Lexology Index - Arbitration - Future Leader

Expertise

Juan Francisco Nasser is a forensic accountant and corporate development professional with more than 20 years of experience. He regularly acts as a quantum and contentious valuations expert in commercial disputes.

Juan has given expert testimony over 65 times, both in arbitration proceedings and in judicial proceedings. He has testified in both English and Spanish for disputes with values in excess of €600 million. He also prepares expert determinations in mergers and acquisition disputes.

Juan’s expertise includes quantification of damages, contentious valuations, economic analysis, and complex financial and accounting matters. He has advised corporate clients and their legal teams across a wide range of sectors, including renewable energy (wind, photovoltaic, hydro), fossil fuels, water infrastructure, technology, real estate, and sports.

Professional recognition

Lexology Index

Arbitration – Future Leader

Background

Juan has wide ranging experience in corporate transactions, commercial disputes and investigations. He has been engaged in numerous transactions in Latin America, Europe, Middle East and Asia.

Juan holds a master’s in financial management, he is a Chartered Financial Analyst charterholder, an accredited valuation expert, and a full member in the practising category as a forensic accountant of The Academy of Experts. He has lectured on business valuation and mergers and acquisitions in several editions of a master’s degree at a Spanish university.