Marfisi Stéphane Partner

Partner Marfisi Stéphane

Professional Background

Stéphane Marfisi is a Partner at Forvis Mazars Transaction Services, specializing in financial advisory and transaction support. With more than 18 years of professional experience, he assists both French and international companies in complex cross-border and domestic transactions.

A graduate in Audit, International Finance and Accounting from Université Paris-Dauphine, Stéphane began his career in financial consultancy and has developed strong expertise in financial due diligence, supporting clients throughout the full transaction lifecycle in both buy-side and sell-side contexts.

He also acts as a financial expert in arbitration and litigation proceedings, including ICC and ad hoc arbitrations. His work regularly involves complex disputes linked to mergers and acquisitions, where he provides valuation analysis, damages quantification, and expert financial opinions. He has participated in arbitration hearings and cross-examinations as a financial expert.

Over the course of his career, Stéphane has developed sector-specific expertise across a wide range of industries, including telecommunications, publishing, media, advertising, engineering services, and e-commerce.

Areas of Expertise

  • Financial Due Diligence (Buy-Side & Sell-Side)
  • Transaction Advisory & M&A Support
  • Litigation Support & Expert Testimony
  • Arbitration Proceedings (ICC & Ad Hoc)
  • Valuation & Quantum of Loss Assessment
  • M&A Disputes (Warranty Claims, Contractual Disputes)
  • Sector Expertise: Telecom, Media, Advertising, Engineering & E-commerce

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