Gregoire Dattee Managing Partner

Key expertise
- Before joining the Ukrainian office as a Country Managing Partner in September 2008, Gregoire had been working for 11 years at Forvis Mazars in France. In Ukraine, leading the team for over 18 years, Gregoire developed new service lines and assembled a team of professionals that now numbers over 120 people. Under Gregoire’s leadership, the company has been recognized as one of the Best Places to Work in the CEE region. Gregoire is responsible for people management, setting objectives, coordinating business processes, controlling the company’s current activities, and coaching subordinates.
- In addition to his duties as a Managing Partner, Gregoire is actively involved in audit projects, overseeing the full practice, including the supervision of engagements, quality control of rendered services, business opportunities development, and major clients’ pursuits. Gregoire focuses on effectively using his professional knowledge of the international environment, combined with his understanding of local client needs.
- With more than 26 years of audit experience, Gregoire has extensive knowledge in agribusiness, light industries, oil and gas, and distribution.
- Since the beginning of the full-scale invasion of Ukraine, Gregoire has led the Reconstruction of Ukraine project and is an active member of the Forvis Mazars Working Group – a global team that brings together people with diverse experiences and expertise to work on Ukraine’s rebuilding processes.
- Gregoire leads the French Desk of Forvis Mazars in Ukraine. He has been a French Trade Advisor (CCEF) since 2011, and is a board member of the French Chamber of Commerce and Industry in Ukraine (CCIFU).
Education and qualification
- University Paris-Dauphine: Master of Finance and Accounting
- University Paris-Sorbonne: Master of Corporate Finance
- French Professional Accounting and Auditing Diploma (DESCF)
Main focus
- Audits and reviews of financial statements prepared in accordance with IFRS / IAS, French GAAP and various other GAAPs
- Financial Due Diligence
Languages
- French
- English
- Ukrainian
- Russian
Want to know more?
Pages associated to Gregoire Dattee
Who we are
- Reconstruction of Ukraine newsletter - February 2026
- Reconstruction of Ukraine newsletter - January 2026
- Reconstruction of Ukraine newsletter - December 2025
- Reconstruction of Ukraine newsletter - November 2025
- Reconstruction of Ukraine newsletter - October 2025
- Reconstruction of Ukraine newsletter - September 2025
- Reconstruction of Ukraine newsletter - July and August 2025
- Reconstruction of Ukraine newsletter - May 2025
- Global French desk
- Reconstruction of Ukraine newsletter - April 2025
- Reconstruction of Ukraine newsletter - March 2025
- Reconstruction of Ukraine newsletter - February 2025
- Reconstruction of Ukraine newsletter - January 2025
- Reconstruction of Ukraine newsletter - December 2024
- Reconstruction of Ukraine newsletter - November 2024
- Reconstruction of Ukraine newsletter - September 2024
- Forvis Mazars services for Ukraine's Reconstruction
- Reconstruction of Ukraine newsletter - July 2024
- Reconstruction of Ukraine newsletter - June 2024
- Reconstruction of Ukraine newsletter - February 2024
- We stand with Ukraine
- Partnering for Ukraine’s reconstruction
- Reconstruction of Ukraine newsletter - January 2024
- Reconstruction of Ukraine newsletter - April 2023
- Reconstruction of Ukraine newsletter - May 2023
- Reconstruction of Ukraine newsletter - June 2023
- Reconstruction of Ukraine newsletter - July 2023
- Reconstruction of Ukraine newsletter - September 2023
- Reconstruction of Ukraine newsletter - October 2023
- Reconstruction of Ukraine newsletter - November 2023
- Reconstruction of Ukraine newsletter - December 2023
- Monthly newsletter on the Reconstruction of Ukraine
- Partnering with the Rebuild Ukraine conference
- Partnering for Ukraine’s reconstruction report
- Publication of the second Central Eastern European Tax brochure