Xavier Oustalniol is a Partner with StoneTurn Group in San Francisco. He focuses on complex forensic accounting issues, fraud investigations, fraud prevention and anti-corruption compliance assessments, and provides consulting services regarding securities litigation, damages analysis, international arbitration, accountant malpractice and purchase price disputes.
With over 25 years of experience as an auditor, forensic accountant and litigation consultant, Xavier has worked with clients across a wide range of industries, including financial services such as hedge funds, banks (mortgage, retail), insurance companies, investment companies, and securities broker / dealers (online, retail, government bonds, primary and clearing), as well as aviation, real estate, technology, energy, automotive, food, luxury apparel, chemicals and aviation electronic components, telecom, broadcasting, professional services partnerships (including law firms), leasing, consumer products, agricultural business, manufacturing and transportation.
Xavier has testified as an accounting expert on the application of Generally Accepted Accounting Principles (“GAAP”) and other financial issues at trial, deposition and in arbitration. He has authored expert reports, declarations and assisted with the preparation of experts for deposition and testimony. He also assisted counsel with deposition preparation of opposing experts and fact witnesses, and responses to Wells submissions.
He has assisted clients (debtors, creditors, trustees) in a number of bankruptcy-related litigations (including Enron, Lehman, Washington Mutual) and other accounting investigations, including during settlement negotiations and mediation.
Xavier has directed complex forensic accounting investigations or internal investigations for boards where regulators such as the U.S. Securities and Exchange Commission (“SEC”), U.S. Department of Justice (“DOJ”) and the Financial Industry Regulatory Authority (“FINRA”) were involved. He consulted on other cross-border disputes before the International Centre for Settlement of Investment Disputes (“ICSID”), the American Arbitration Association (“AAA”) and the International Chamber of Commerce (“ICC”), involving companies in Europe, South and Central America and Japan.
Prior to joining StoneTurn, Xavier was with Alvarez & Marsal, where he served as a Managing Director in the firm’s Global Forensic and Dispute Services practice in San Francisco. Previously, he was with two other global professional services firms. He began his career as an auditor with Deloitte.
Xavier is a Certified Public Accountant (licensed in California and New York), Certified in Financial Forensics and a Certified Insolvency and Restructuring Advisor. He is fluent in French.